| supra-anal | Above the anus. Synonym: superanal. (05 Mar 2000) |
|---|---|
| deep part of external anal sphincter | deep part of external anal sphincter |
| internal anal sphincter | <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) |
| external anal sphincter | A fusiform ring of striated muscular fibres surrounding the anus, attached posteriorly to the coccyx and anteriorly to the central tendon of the perineum; it is subdivided, often indistinctly, into a subcutaneous part, a superficial part and a deep part for descriptive purposes. Synonym: musculus sphincter ani externus, external sphincter muscle of anus. (05 Mar 2000) |
| adenomatous polyp | A polyp that consists of benign neoplastic tissue derived from glandular epithelium. Synonym: cellular polyp, polypoid adenoma. (05 Mar 2000) |
| aural polyp | <otolaryngology> A benign polyp in the external ear canal that can be attached to the tympanic membrane. (27 Sep 1997) |
| bladder polyp | A pedunculated tumour that arises from the mucosal surface of the bladder. most are benign, but some may become malignant. (27 Sep 1997) |
| bleeding polyp | Synonym: vascular polyp. (05 Mar 2000) |
| bronchial polyp | A polyp growing from the bronchial mucosa. (05 Mar 2000) |
| cardiac polyp | Usually a rounded thrombus attached to the endocardium. (05 Mar 2000) |
| vascular polyp | A bulging or protruding angioma of the nasal mucous membrane. Synonym: bleeding polyp. (05 Mar 2000) |
| gelatinous polyp | A polyp that consists of delicate, loose, edematous connective tissue, a polypoid myxoma. (05 Mar 2000) |
| regenerative polyp | A hyperplastic polyp of the gastric mucosa. (05 Mar 2000) |
| cellular polyp | A polyp that consists of benign neoplastic tissue derived from glandular epithelium. Synonym: cellular polyp, polypoid adenoma. (05 Mar 2000) |
| pedunculated polyp | Any form of polyp that is attached to the base tissue by means of a slender stalk. (05 Mar 2000) |