| NOS | network operating system; nitric oxide synthetase; non-organ-specific; not on staff; not otherwise s... |
|---|---|
| NS | natural science; Neosporin; nephrosclerosis; nephrotic syndrome; nervous system; neurological surger... |
| NINCDS/ADRDA | National Institute of Neurological and Communicative Diseases and Stroke/Alzheimer's Disease and Rel... |
| ACR | abnormally contracting region; absolute catabolic rate; acriflavine; adenomatosis of colon and rectu... |
| CRS | Carroll rating scale for depression; catheter-related sepsis; caudal regression syndrome; cervical s... |
D factor
| nutritional and metabolic diseases | A collective term for nutritional disorders (result of poor assimilation or utilization of food) and metabolic disorders (result of poor metabolism or inherited enzyme abnormality). (12 Dec 1998) |
|---|---|
| injuries, poisonings, and occupational diseases | Disorders representing collectively the results of assault by external forces, rather than by organic or physiologic dysfunction or by pathogens. (12 Dec 1998) |
| urologic and male genital diseases | A collective term for urinary tract diseases in male and female and diseases of the male genitalia. (12 Dec 1998) |
| anus | <anatomy> The distal or terminal orifice of the alimentary canal. (18 Nov 1997) |
| anus cerebri | Entrance to the cerebral aqueduct (of Sylvius) from the caudal part of the third ventricle. Synonym: aditus ad aqueductum cerebri, Bartholin's anus, opening to cerebral aqueduct. (05 Mar 2000) |
| anus, imperforate | Persistence of the anal membrane, so that the anus is closed. The defect is not always complete; sometimes a narrow opening permits the passage of the bowel contents. When completely imperforate, the anus is seen as a dimple (the proctodeal pit) in the skin of the perineum. The latter condition is often associated with atresia of the lower rectum. (12 Dec 1998) |
| anus vesicalis | Rectal emptying into the urinary bladder. (05 Mar 2000) |
| artificial anus | An opening into the bowel, usually in the right or left flank, as a result of a colostomy. (05 Mar 2000) |
| Bartholin's anus | Entrance to the cerebral aqueduct (of Sylvius) from the caudal part of the third ventricle. Synonym: aditus ad aqueductum cerebri, Bartholin's anus, opening to cerebral aqueduct. (05 Mar 2000) |
| vesicalis anus | Imperforate anus with urinary bladder opening into the anus. (05 Mar 2000) |
| vestibular anus | <anatomy, surgery> A congenital malformation in which the anus is imperforate but the rectum opens into the vagina just above the vulva. (05 Mar 2000) |
| corrugator cutis muscle of anus | Smooth muscle fibres radiating from the anal opening superficial to the external sphincter. Synonym: musculus corrugator cutis ani. (05 Mar 2000) |
| imperforate anus | <embryology, paediatrics> A congenital obstruction of the anal opening. Occurs in approximately 1 in 5,000 infants. This condition is corrected through surgery. (27 Sep 1997) |
| internal sphincter muscle of anus | <anatomy> A smooth muscle ring, formed by an increase of the circular fibres of the rectum, situated at the upper end of the anal canal, internal to the outer voluntary external anal sphincter. This sphincter is maximally-contracted when the rectal ampulla is at rest -empty or relaxed to accommodate a distending faecal mass. It is inhibited with filling of the ampulla, increased distension and peristalsis. Synonym: musculus sphincter ani internus, internal sphincter muscle of anus. (05 Mar 2000) |
| elevator muscle of anus | <anatomy> Formed by pubococcygeus and iliococcygeus muscles; origin, posterior body of pubis, tendinous arch of the levator ani, and spine of ischium; insertion, anococcygeal ligament, sides of the lower part of the sacrum and of coccyx; action, resists prolapsing forces and draws the anus upward following defecation; supports the pelvic viscera; nerve supply, nerve to levator ani (fourth sacral spinal nerve). Synonym: musculus levator ani, elevator muscle of anus. (05 Mar 2000) |