Agenesis

"Agenesis" References in the ICD-10-CM Index to Diseases and Injuries

References in the ICD-10-CM Index to Diseases and Injuries applicable to the clinical term "agenesis"

  • Agenesis
    • adrenal (gland) - Q89.1 Congenital malformations of adrenal gland
    • alimentary tract (complete) (partial) NEC - Q45.8 Other specified congenital malformations of digestive system
      • upper - Q40.8 Other specified congenital malformations of upper alimentary tract
    • anus, anal (canal) - Q42.3 Congenital absence, atresia and stenosis of anus without fistula
      • with fistula - Q42.2 Congenital absence, atresia and stenosis of anus with fistula
    • aorta - Q25.41 Absence and aplasia of aorta
    • appendix - Q42.8 Congenital absence, atresia and stenosis of other parts of large intestine
    • arm (complete) - Q71.0 Congenital complete absence of upper limb
      • with hand present - Q71.1 Congenital absence of upper arm and forearm with hand present
    • artery (peripheral) - Q27.9 Congenital malformation of peripheral vascular system, unspecified
      • brain - Q28.3 Other malformations of cerebral vessels
      • coronary - Q24.5 Malformation of coronary vessels
      • pulmonary - Q25.79 Other congenital malformations of pulmonary artery
      • specified NEC - Q27.8 Other specified congenital malformations of peripheral vascular system
      • umbilical - Q27.0 Congenital absence and hypoplasia of umbilical artery
    • auditory (canal) (external) - Q16.1 Congenital absence, atresia and stricture of auditory canal (external)
    • auricle (ear) - Q16.0 Congenital absence of (ear) auricle
    • bile duct or passage - Q44.5 Other congenital malformations of bile ducts
    • bladder - Q64.5 Congenital absence of bladder and urethra
    • bone - Q79.9 Congenital malformation of musculoskeletal system, unspecified
    • brain - Q00.0 Anencephaly
      • part of - Q04.3 Other reduction deformities of brain
    • breast (with nipple present) - Q83.8 Other congenital malformations of breast
      • with absent nipple - Q83.0 Congenital absence of breast with absent nipple
    • bronchus - Q32.4 Other congenital malformations of bronchus
    • canaliculus lacrimalis - Q10.4 Absence and agenesis of lacrimal apparatus
    • carpus - See: Agenesis, hand;
    • cartilage - Q79.9 Congenital malformation of musculoskeletal system, unspecified
    • cecum - Q42.8 Congenital absence, atresia and stenosis of other parts of large intestine
    • cerebellum - Q04.3 Other reduction deformities of brain
    • cervix - Q51.5 Agenesis and aplasia of cervix
    • chin - Q18.8 Other specified congenital malformations of face and neck
    • cilia - Q10.3 Other congenital malformations of eyelid
    • circulatory system, part NOS - Q28.9 Congenital malformation of circulatory system, unspecified
    • clavicle - Q74.0 Other congenital malformations of upper limb(s), including shoulder girdle
    • clitoris - Q52.6 Congenital malformation of clitoris
    • coccyx - Q76.49 Other congenital malformations of spine, not associated with scoliosis
    • colon - Q42.9 Congenital absence, atresia and stenosis of large intestine, part unspecified
      • specified NEC - Q42.8 Congenital absence, atresia and stenosis of other parts of large intestine
    • corpus callosum - Q04.0 Congenital malformations of corpus callosum
    • cricoid cartilage - Q31.8 Other congenital malformations of larynx
    • diaphragm (with hernia) - Q79.1 Other congenital malformations of diaphragm
    • digestive organ (s) or tract (complete) (partial) NEC - Q45.8 Other specified congenital malformations of digestive system
      • upper - Q40.8 Other specified congenital malformations of upper alimentary tract
    • ductus arteriosus - Q28.8 Other specified congenital malformations of circulatory system
    • duodenum - Q41.0 Congenital absence, atresia and stenosis of duodenum
    • ear - Q16.9 Congenital malformation of ear causing impairment of hearing, unspecified
      • auricle - Q16.0 Congenital absence of (ear) auricle
      • lobe - Q17.8 Other specified congenital malformations of ear
    • ejaculatory duct - Q55.4 Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate
    • endocrine (gland) NEC - Q89.2 Congenital malformations of other endocrine glands
    • epiglottis - Q31.8 Other congenital malformations of larynx
    • esophagus - Q39.8 Other congenital malformations of esophagus
    • eustachian tube - Q16.2 Absence of eustachian tube
    • eye - Q11.1 Other anophthalmos
      • adnexa - Q15.8 Other specified congenital malformations of eye
    • eyelid (fold) - Q10.3 Other congenital malformations of eyelid
    • face
      • bones NEC - Q75.8 Other specified congenital malformations of skull and face bones
      • specified part NEC - Q18.8 Other specified congenital malformations of face and neck
    • fallopian tube - Q50.6 Other congenital malformations of fallopian tube and broad ligament
    • femur - See: Defect, reduction, lower limb, longitudinal, femur;
    • fibula - See: Defect, reduction, lower limb, longitudinal, fibula;
    • finger (complete) (partial) - See: Agenesis, hand;
    • foot (and toes) (complete) (partial) - Q72.3 Congenital absence of foot and toe(s)
    • forearm (with hand present) - See: Agenesis, arm, with hand present;
      • and hand - Q71.2 Congenital absence of both forearm and hand
    • gallbladder - Q44.0 Agenesis, aplasia and hypoplasia of gallbladder
    • gastric - Q40.2 Other specified congenital malformations of stomach
    • genitalia, genital (organ (s))
      • female - Q52.8 Other specified congenital malformations of female genitalia
        • external - Q52.71 Congenital absence of vulva
        • internal NEC - Q52.8 Other specified congenital malformations of female genitalia
      • male - Q55.8 Other specified congenital malformations of male genital organs
    • glottis - Q31.8 Other congenital malformations of larynx
    • hair - Q84.0 Congenital alopecia
    • hand (and fingers) (complete) (partial) - Q71.3 Congenital absence of hand and finger
    • heart - Q24.8 Other specified congenital malformations of heart
      • valve NEC - Q24.8 Other specified congenital malformations of heart
        • pulmonary - Q22.0 Pulmonary valve atresia
    • hepatic - Q44.7 Other congenital malformations of liver
    • humerus - See: Defect, reduction, upper limb;
    • hymen - Q52.4 Other congenital malformations of vagina
    • ileum - Q41.2 Congenital absence, atresia and stenosis of ileum
    • incus - Q16.3 Congenital malformation of ear ossicles
    • intestine (small) - Q41.9 Congenital absence, atresia and stenosis of small intestine, part unspecified
      • large - Q42.9 Congenital absence, atresia and stenosis of large intestine, part unspecified
        • specified NEC - Q42.8 Congenital absence, atresia and stenosis of other parts of large intestine
    • iris (dilator fibers) - Q13.1 Absence of iris
    • jaw - M26.09 Other specified anomalies of jaw size
    • jejunum - Q41.1 Congenital absence, atresia and stenosis of jejunum
    • kidney (s) (partial) - Q60.2 Renal agenesis, unspecified
      • bilateral - Q60.1 Renal agenesis, bilateral
      • unilateral - Q60.0 Renal agenesis, unilateral
    • labium (majus) (minus) - Q52.71 Congenital absence of vulva
    • labyrinth, membranous - Q16.5 Congenital malformation of inner ear
    • lacrimal apparatus - Q10.4 Absence and agenesis of lacrimal apparatus
    • larynx - Q31.8 Other congenital malformations of larynx
    • leg (complete) - Q72.0 Congenital complete absence of lower limb
      • lower leg (with foot present) - See: Agenesis, leg, with foot present;
        • and foot - Q72.2 Congenital absence of both lower leg and foot
      • with foot present - Q72.1 Congenital absence of thigh and lower leg with foot present
    • lens - Q12.3 Congenital aphakia
    • limb (complete) - Q73.0 Congenital absence of unspecified limb(s)
      • lower - See: Agenesis, leg;
      • upper - See: Agenesis, arm;
    • lip - Q38.0 Congenital malformations of lips, not elsewhere classified
    • liver - Q44.7 Other congenital malformations of liver
    • lung (fissure) (lobe) (bilateral) (unilateral) - Q33.3 Agenesis of lung
    • mandible, maxilla - M26.09 Other specified anomalies of jaw size
    • metacarpus - See: Agenesis, hand;
    • metatarsus - See: Agenesis, foot;
    • muscle - Q79.8 Other congenital malformations of musculoskeletal system
      • eyelid - Q10.3 Other congenital malformations of eyelid
      • ocular - Q15.8 Other specified congenital malformations of eye
    • musculoskeletal system NEC - Q79.8 Other congenital malformations of musculoskeletal system
    • nail (s) - Q84.3 Anonychia
    • neck, part - Q18.8 Other specified congenital malformations of face and neck
    • nerve - Q07.8 Other specified congenital malformations of nervous system
    • nervous system, part NEC - Q07.8 Other specified congenital malformations of nervous system
    • nipple - Q83.2 Absent nipple
    • nose - Q30.1 Agenesis and underdevelopment of nose
    • nuclear - Q07.8 Other specified congenital malformations of nervous system
    • organ
      • of Corti - Q16.5 Congenital malformation of inner ear
      • or site not listed - See: Anomaly, by site;
    • osseous meatus (ear) - Q16.1 Congenital absence, atresia and stricture of auditory canal (external)
    • ovary
      • bilateral - Q50.02 Congenital absence of ovary, bilateral
      • unilateral - Q50.01 Congenital absence of ovary, unilateral
    • oviduct - Q50.6 Other congenital malformations of fallopian tube and broad ligament
    • pancreas - Q45.0 Agenesis, aplasia and hypoplasia of pancreas
    • parathyroid (gland) - Q89.2 Congenital malformations of other endocrine glands
    • parotid gland (s) - Q38.4 Congenital malformations of salivary glands and ducts
    • patella - Q74.1 Congenital malformation of knee
    • pelvic girdle (complete) (partial) - Q74.2 Other congenital malformations of lower limb(s), including pelvic girdle
    • penis - Q55.5 Congenital absence and aplasia of penis
    • pericardium - Q24.8 Other specified congenital malformations of heart
    • pituitary (gland) - Q89.2 Congenital malformations of other endocrine glands
    • prostate - Q55.4 Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate
    • punctum lacrimale - Q10.4 Absence and agenesis of lacrimal apparatus
    • radioulnar - See: Defect, reduction, upper limb;
    • radius - See: Defect, reduction, upper limb, longitudinal, radius;
    • rectum - Q42.1 Congenital absence, atresia and stenosis of rectum without fistula
      • with fistula - Q42.0 Congenital absence, atresia and stenosis of rectum with fistula
    • renal - Q60.2 Renal agenesis, unspecified
      • bilateral - Q60.1 Renal agenesis, bilateral
      • unilateral - Q60.0 Renal agenesis, unilateral
    • respiratory organ NEC - Q34.8 Other specified congenital malformations of respiratory system
    • rib - Q76.6 Other congenital malformations of ribs
    • roof of orbit - Q75.8 Other specified congenital malformations of skull and face bones
    • round ligament - Q52.8 Other specified congenital malformations of female genitalia
    • sacrum - Q76.49 Other congenital malformations of spine, not associated with scoliosis
    • salivary gland - Q38.4 Congenital malformations of salivary glands and ducts
    • scapula - Q74.0 Other congenital malformations of upper limb(s), including shoulder girdle
    • scrotum - Q55.29 Other congenital malformations of testis and scrotum
    • seminal vesicles - Q55.4 Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate
    • septum
      • atrial - Q21.1 Atrial septal defect
      • between aorta and pulmonary artery - Q21.4 Aortopulmonary septal defect
      • ventricular - Q20.4 Double inlet ventricle
    • shoulder girdle (complete) (partial) - Q74.0 Other congenital malformations of upper limb(s), including shoulder girdle
    • skull (bone) - Q75.8 Other specified congenital malformations of skull and face bones
      • with
        • anencephaly - Q00.0 Anencephaly
        • encephalocele - See: Encephalocele;
        • hydrocephalus - Q03.9 Congenital hydrocephalus, unspecified
          • with spina bifida - See: Spina bifida, by site, with hydrocephalus;
        • microcephaly - Q02 Microcephaly
    • spermatic cord - Q55.4 Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate
    • spinal cord - Q06.0 Amyelia
    • spine - Q76.49 Other congenital malformations of spine, not associated with scoliosis
    • spleen - Q89.01 Asplenia (congenital)
    • sternum - Q76.7 Congenital malformation of sternum
    • stomach - Q40.2 Other specified congenital malformations of stomach
    • submaxillary gland (s) (congenital) - Q38.4 Congenital malformations of salivary glands and ducts
    • tarsus - See: Agenesis, foot;
    • tendon - Q79.8 Other congenital malformations of musculoskeletal system
    • testicle - Q55.0 Absence and aplasia of testis
    • thymus (gland) - Q89.2 Congenital malformations of other endocrine glands
    • thyroid (gland) - E03.1 Congenital hypothyroidism without goiter
      • cartilage - Q31.8 Other congenital malformations of larynx
    • tibia - See: Defect, reduction, lower limb, longitudinal, tibia;
    • tibiofibular - See: Defect, reduction, lower limb, specified type NEC;
    • toe (and foot) (complete) (partial) - See: Agenesis, foot;
    • tongue - Q38.3 Other congenital malformations of tongue
    • trachea (cartilage) - Q32.1 Other congenital malformations of trachea
    • ulna - See: Defect, reduction, upper limb, longitudinal, ulna;
    • upper limb - See: Agenesis, arm;
    • ureter - Q62.4 Agenesis of ureter
    • urethra - Q64.5 Congenital absence of bladder and urethra
    • urinary tract NEC - Q64.8 Other specified congenital malformations of urinary system
    • uterus - Q51.0 Agenesis and aplasia of uterus
    • uvula - Q38.5 Congenital malformations of palate, not elsewhere classified
    • vagina - Q52.0 Congenital absence of vagina
    • vas deferens - Q55.4 Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate
    • vein (s) (peripheral) - Q27.9 Congenital malformation of peripheral vascular system, unspecified
      • brain - Q28.3 Other malformations of cerebral vessels
      • great NEC - Q26.8 Other congenital malformations of great veins
      • portal - Q26.5 Anomalous portal venous connection
    • vena cava (inferior) (superior) - Q26.8 Other congenital malformations of great veins
    • vermis of cerebellum - Q04.3 Other reduction deformities of brain
    • vertebra - Q76.49 Other congenital malformations of spine, not associated with scoliosis
    • vulva - Q52.71 Congenital absence of vulva

Applicable Clinical Terms Definitions

Anencephaly: A malformation of the nervous system caused by failure of the anterior neuropore to close. Infants are born with intact spinal cords, cerebellums, and brainstems, but lack formation of neural structures above this level. The skull is only partially formed but the eyes are usually normal. This condition may be associated with folate deficiency. Affected infants are only capable of primitive (brain stem) reflexes and usually do not survive for more than two weeks. (From Menkes, Textbook of Child Neurology, 5th ed, p247)

Aorta: The main trunk of the systemic arteries.

Appendix: A worm-like blind tube extension from the CECUM.

Bone and Bones: A specialized CONNECTIVE TISSUE that is the main constituent of the SKELETON. The principal cellular component of bone is comprised of OSTEOBLASTS; OSTEOCYTES; and OSTEOCLASTS, while FIBRILLAR COLLAGENS and hydroxyapatite crystals form the BONE MATRIX.

Brain: The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.

Cartilage: A non-vascular form of connective tissue composed of CHONDROCYTES embedded in a matrix that includes CHONDROITIN SULFATE and various types of FIBRILLAR COLLAGEN. There are three major types: HYALINE CARTILAGE; FIBROCARTILAGE; and ELASTIC CARTILAGE.

Cecum: The blind sac or outpouching area of the LARGE INTESTINE that is below the entrance of the SMALL INTESTINE. It has a worm-like extension, the vermiform APPENDIX.

Cerebellum: The part of brain that lies behind the BRAIN STEM in the posterior base of skull (CRANIAL FOSSA, POSTERIOR). It is also known as the "little brain" with convolutions similar to those of CEREBRAL CORTEX, inner white matter, and deep cerebellar nuclei. Its function is to coordinate voluntary movements, maintain balance, and learn motor skills.

Cervix Uteri: The neck portion of the UTERUS between the lower isthmus and the VAGINA forming the cervical canal.

Chin: The anatomical frontal portion of the mandible, also known as the mentum, that contains the line of fusion of the two separate halves of the mandible (symphysis menti). This line of fusion divides inferiorly to enclose a triangular area called the mental protuberance. On each side, inferior to the second premolar tooth, is the mental foramen for the passage of blood vessels and a nerve.

Cilia: Populations of thin, motile processes found covering the surface of ciliates (CILIOPHORA) or the free surface of the cells making up ciliated EPITHELIUM. Each cilium arises from a basic granule in the superficial layer of CYTOPLASM. The movement of cilia propels ciliates through the liquid in which they live. The movement of cilia on a ciliated epithelium serves to propel a surface layer of mucus or fluid. (King & Stansfield, A Dictionary of Genetics, 4th ed)

Clavicle: A bone on the ventral side of the shoulder girdle, which in humans is commonly called the collar bone.

Clitoris: An erectile structure homologous with the penis, situated beneath the anterior labial commissure, partially hidden between the anterior ends of the labia minora.

Coccyx: The last bone in the VERTEBRAL COLUMN in tailless primates considered to be a vestigial tail-bone consisting of three to five fused VERTEBRAE.

Colon: The segment of LARGE INTESTINE between the CECUM and the RECTUM. It includes the ASCENDING COLON; the TRANSVERSE COLON; the DESCENDING COLON; and the SIGMOID COLON.

Corpus Callosum: Broad plate of dense myelinated fibers that reciprocally interconnect regions of the cortex in all lobes with corresponding regions of the opposite hemisphere. The corpus callosum is located deep in the longitudinal fissure.

Cricoid Cartilage: The small thick cartilage that forms the lower and posterior parts of the laryngeal wall.

Ductus Arteriosus: A fetal blood vessel connecting the pulmonary artery with the descending aorta.

Duodenum: The shortest and widest portion of the SMALL INTESTINE adjacent to the PYLORUS of the STOMACH. It is named for having the length equal to about the width of 12 fingers.

Ear: The hearing and equilibrium system of the body. It consists of three parts: the EXTERNAL EAR, the MIDDLE EAR, and the INNER EAR. Sound waves are transmitted through this organ where vibration is transduced to nerve signals that pass through the ACOUSTIC NERVE to the CENTRAL NERVOUS SYSTEM. The inner ear also contains the vestibular organ that maintains equilibrium by transducing signals to the VESTIBULAR NERVE.

Ejaculatory Ducts: Paired ducts in the human male through which semen is ejaculated into the urethra.

Encephalocele: Brain tissue herniation through a congenital or acquired defect in the skull. The majority of congenital encephaloceles occur in the occipital or frontal regions. Clinical features include a protuberant mass that may be pulsatile. The quantity and location of protruding neural tissue determines the type and degree of neurologic deficit. Visual defects, psychomotor developmental delay, and persistent motor deficits frequently occur.

Epiglottis: A thin leaf-shaped cartilage that is covered with LARYNGEAL MUCOSA and situated posterior to the root of the tongue and HYOID BONE. During swallowing, the epiglottis folds back over the larynx inlet thus prevents foods from entering the airway.

Esophagus: The muscular membranous segment between the PHARYNX and the STOMACH in the UPPER GASTROINTESTINAL TRACT.

Eustachian Tube: A narrow passageway that connects the upper part of the throat to the TYMPANIC CAVITY.

Eye: The organ of sight constituting a pair of globular organs made up of a three-layered roughly spherical structure specialized for receiving and responding to light.

Eyelids: Each of the upper and lower folds of SKIN which cover the EYE when closed.

Face: The anterior portion of the head that includes the skin, muscles, and structures of the forehead, eyes, nose, mouth, cheeks, and jaw.

Fallopian Tubes: A pair of highly specialized muscular canals extending from the UTERUS to its corresponding OVARY. They provide the means for OVUM collection, and the site for the final maturation of gametes and FERTILIZATION. The fallopian tube consists of an interstitium, an isthmus, an ampulla, an infundibulum, and fimbriae. Its wall consists of three histologic layers: serous, muscular, and an internal mucosal layer lined with both ciliated and secretory cells.

Female:

Femur: The longest and largest bone of the skeleton, it is situated between the hip and the knee.

Fibula: The bone of the lower leg lateral to and smaller than the tibia. In proportion to its length, it is the most slender of the long bones.

Gallbladder: A storage reservoir for BILE secretion. Gallbladder allows the delivery of bile acids at a high concentration and in a controlled manner, via the CYSTIC DUCT to the DUODENUM, for degradation of dietary lipid.

Glottis: The vocal apparatus of the larynx, situated in the middle section of the larynx. Glottis consists of the VOCAL FOLDS and an opening (rima glottidis) between the folds.

Hair: A filament-like structure consisting of a shaft which projects to the surface of the SKIN from a root which is softer than the shaft and lodges in the cavity of a HAIR FOLLICLE. It is found on most surfaces of the body.

Heart: The hollow, muscular organ that maintains the circulation of the blood.

Humerus: Bone in humans and primates extending from the SHOULDER JOINT to the ELBOW JOINT.

Hydrocephalus: Excessive accumulation of cerebrospinal fluid within the cranium which may be associated with dilation of cerebral ventricles, INTRACRANIAL HYPERTENSION; HEADACHE; lethargy; URINARY INCONTINENCE; and ATAXIA.

Hymen: A thin fold of MUCOUS MEMBRANE situated at the orifice of the vagina.

Ileum: The distal and narrowest portion of the SMALL INTESTINE, between the JEJUNUM and the ILEOCECAL VALVE of the LARGE INTESTINE.

Incus: One of three ossicles of the middle ear. It conducts sound vibrations from the MALLEUS to the STAPES.

Jaw: Bony structure of the mouth that holds the teeth. It consists of the MANDIBLE and the MAXILLA.

Jejunum: The middle portion of the SMALL INTESTINE, between DUODENUM and ILEUM. It represents about 2/5 of the remaining portion of the small intestine below duodenum.

Lacrimal Apparatus: The tear-forming and tear-conducting system which includes the lacrimal glands, eyelid margins, conjunctival sac, and the tear drainage system.

Larynx: A tubular organ of VOICE production. It is located in the anterior neck, superior to the TRACHEA and inferior to the tongue and HYOID BONE.

Lip: Either of the two fleshy, full-blooded margins of the mouth.

Liver: A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.

Male:

Metacarpus: The region of the HAND between the WRIST and the FINGERS.

Metatarsus: The part of the foot between the tarsa and the TOES.

Microcephaly: A congenital abnormality in which the CEREBRUM is underdeveloped, the fontanels close prematurely, and, as a result, the head is small. (Desk Reference for Neuroscience, 2nd ed.)

Muscles: Contractile tissue that produces movement in animals.

Nipples: The conic organs which usually give outlet to milk from the mammary glands.

Nose: A part of the upper respiratory tract. It contains the organ of SMELL. The term includes the external nose, the nasal cavity, and the PARANASAL SINUSES.

Ovary: The reproductive organ (GONADS) in female animals. In vertebrates, the ovary contains two functional parts: the OVARIAN FOLLICLE for the production of female germ cells (OOGENESIS); and the endocrine cells (GRANULOSA CELLS; THECA CELLS; and LUTEAL CELLS) for the production of ESTROGENS and PROGESTERONE.

Oviducts: Ducts that serve exclusively for the passage of eggs from the ovaries to the exterior of the body. In non-mammals, they are termed oviducts. In mammals, they are highly specialized and known as FALLOPIAN TUBES.

Pancreas: A nodular organ in the ABDOMEN that contains a mixture of ENDOCRINE GLANDS and EXOCRINE GLANDS. The small endocrine portion consists of the ISLETS OF LANGERHANS secreting a number of hormones into the blood stream. The large exocrine portion (EXOCRINE PANCREAS) is a compound acinar gland that secretes several digestive enzymes into the pancreatic ductal system that empties into the DUODENUM.

Patella: The flat, triangular bone situated at the anterior part of the KNEE.

Penis: The external reproductive organ of males. It is composed of a mass of erectile tissue enclosed in three cylindrical fibrous compartments. Two of the three compartments, the corpus cavernosa, are placed side-by-side along the upper part of the organ. The third compartment below, the corpus spongiosum, houses the urethra.

Pericardium: A conical fibro-serous sac surrounding the HEART and the roots of the great vessels (AORTA; VENAE CAVAE; PULMONARY ARTERY). Pericardium consists of two sacs: the outer fibrous pericardium and the inner serous pericardium. The latter consists of an outer parietal layer facing the fibrous pericardium, and an inner visceral layer (epicardium) resting next to the heart, and a pericardial cavity between these two layers.

Prostate: A gland in males that surrounds the neck of the URINARY BLADDER and the URETHRA. It secretes a substance that liquefies coagulated semen. It is situated in the pelvic cavity behind the lower part of the PUBIC SYMPHYSIS, above the deep layer of the triangular ligament, and rests upon the RECTUM.

Radius: The outer shorter of the two bones of the FOREARM, lying parallel to the ULNA and partially revolving around it.

Rectum: The distal segment of the LARGE INTESTINE, between the SIGMOID COLON and the ANAL CANAL.

Ribs: A set of twelve curved bones which connect to the vertebral column posteriorly, and terminate anteriorly as costal cartilage. Together, they form a protective cage around the internal thoracic organs.

Sacrum: Five fused VERTEBRAE forming a triangle-shaped structure at the back of the PELVIS. It articulates superiorly with the LUMBAR VERTEBRAE, inferiorly with the COCCYX, and anteriorly with the ILIUM of the PELVIS. The sacrum strengthens and stabilizes the PELVIS.

Salivary Glands: Glands that secrete SALIVA in the MOUTH. There are three pairs of salivary glands (PAROTID GLAND; SUBLINGUAL GLAND; SUBMANDIBULAR GLAND).

Scapula: Also called the shoulder blade, it is a flat triangular bone, a pair of which form the back part of the shoulder girdle.

Scrotum: A cutaneous pouch of skin containing the testicles and spermatic cords.

Seminal Vesicles: A saclike, glandular diverticulum on each ductus deferens in male vertebrates. It is united with the excretory duct and serves for temporary storage of semen. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

Spermatic Cord: Either of a pair of tubular structures formed by DUCTUS DEFERENS; ARTERIES; VEINS; LYMPHATIC VESSELS; and nerves. The spermatic cord extends from the deep inguinal ring through the INGUINAL CANAL to the TESTIS in the SCROTUM.

Spinal Cord: A cylindrical column of tissue that lies within the vertebral canal. It is composed of WHITE MATTER and GRAY MATTER.

Spine: The spinal or vertebral column.

Spleen: An encapsulated lymphatic organ through which venous blood filters.

Sternum: A long, narrow, and flat bone commonly known as BREASTBONE occurring in the midsection of the anterior thoracic segment or chest region, which stabilizes the rib cage and serves as the point of origin for several muscles that move the arms, head, and neck.

Stomach: An organ of digestion situated in the left upper quadrant of the abdomen between the termination of the ESOPHAGUS and the beginning of the DUODENUM.

Tendons: Fibrous bands or cords of CONNECTIVE TISSUE at the ends of SKELETAL MUSCLE FIBERS that serve to attach the MUSCLES to bones and other structures.

Tibia: The second longest bone of the skeleton. It is located on the medial side of the lower leg, articulating with the FIBULA laterally, the TALUS distally, and the FEMUR proximally.

Tongue: A muscular organ in the mouth that is covered with pink tissue called mucosa, tiny bumps called papillae, and thousands of taste buds. The tongue is anchored to the mouth and is vital for chewing, swallowing, and for speech.

Ulna: The inner and longer bone of the FOREARM.

Upper Extremity: The region of the upper limb in animals, extending from the deltoid region to the HAND, and including the ARM; AXILLA; and SHOULDER.

Ureter: One of a pair of thick-walled tubes that transports urine from the KIDNEY PELVIS to the URINARY BLADDER.

Urethra: A tube that transports URINE from the URINARY BLADDER to the outside of the body in both the sexes. It also has a reproductive function in the male by providing a passage for SPERM.

Uterus: The hollow thick-walled muscular organ in the female PELVIS. It consists of the fundus which is the site of EMBRYO IMPLANTATION and FETAL DEVELOPMENT. Beyond the isthmus at the perineal end of fundus, is CERVIX UTERI (the neck) opening into VAGINA. Beyond the isthmi at the upper abdominal end of fundus, are the FALLOPIAN TUBES.

Uvula: A fleshy extension at the back of the soft palate that hangs above the opening of the throat.

Vagina: The genital canal in the female, extending from the UTERUS to the VULVA. (Stedman, 25th ed)

Vas Deferens: The excretory duct of the testes that carries SPERMATOZOA. It rises from the SCROTUM and joins the SEMINAL VESICLES to form the ejaculatory duct.

Spine: The spinal or vertebral column.

Vulva: The external genitalia of the female. It includes the CLITORIS, the labia, the vestibule, and its glands.