| ampulla of the saemicircular canals | A circumscribed dilation of one extremity of each of the three bony saemicircular canals, anterior, posterior, and lateral; each contains an ampulla of the saemicircular ducts. Synonym: ampulla ossea, osseous ampulla. (05 Mar 2000) |
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| ampulla of the saemicircular ducts | A nearly spherical enlargement of one end of each of the three saemicircular ducts, anterior, posterior, and lateral, where they connect with the utricle. Each contains a neuroepithelial crista ampullaris. Synonym: ampulla membranacea, membranous ampulla. (05 Mar 2000) |
| ampulla of uterine tube | The wide portion of the uterine (fallopian) tube near the fimbriated extremity; it has a complexly folded mucosa with a columnar epithelium of mostly ciliated cells between which are secretory cells. Synonym: ampulla tubae uterinae. (05 Mar 2000) |
| ampulla of vater | A dilatation of the ducts (tubes) from the liver and pancreas at the point where they enter the small intestine (duodenum). (27 Sep 1997) |
| ampulla ossea | A circumscribed dilation of one extremity of each of the three bony saemicircular canals, anterior, posterior, and lateral; each contains an ampulla of the saemicircular ducts. Synonym: ampulla ossea, osseous ampulla. (05 Mar 2000) |
| ampulla recti | A dilated portion of the rectum just above the anal canal. Synonym: ampulla recti, ampulla of rectum. (05 Mar 2000) |
| ampulla tubae uterinae | The wide portion of the uterine (fallopian) tube near the fimbriated extremity; it has a complexly folded mucosa with a columnar epithelium of mostly ciliated cells between which are secretory cells. Synonym: ampulla tubae uterinae. (05 Mar 2000) |
| ampullaceous | Like a bottle or inflated bladder; bottle-shaped; swelling. <zoology> Ampullaceous sac, one of the peculiar cavities in the tissues of sponges, containing the zooidal cells. Origin: L. Ampullaceus, fr. Ampulla. Source: Websters Dictionary (01 Mar 1998) |
| ampullar | Relating in any sense to an ampulla. (05 Mar 2000) |
| ampullar abortion | Abortion resulting from pregnancy in the ampulla of the fallopian tube. (05 Mar 2000) |
| ampullar pregnancy | Tubal pregnancy situated near the midportion of the oviduct. (05 Mar 2000) |
| ampullary aneurysm | A saclike bulging on one side of an artery. Synonym: ampullary aneurysm. (05 Mar 2000) |
| ampullary crest | An elevation on the inner surface of the ampulla of each saemicircular duct; filaments of the vestibular nerve pass through the crista to reach hair cells on its surface; the hair cells are capped by the cupula, a gelatinous protein-polysaccharide mass. Synonym: crista ampullaris, acoustic crest, transverse septum. (05 Mar 2000) |
| ampullary crura of saemicircular ducts | The dilated ends of the three saemicircular ducts, each of which contains a specialised thickening of the epithelium known as the ampullary crest. Synonym: crura membranacea ampullaria ductus saemicircularis, ampullary limbs of saemicircular ducts. (05 Mar 2000) |
| ampullary folds of uterine tube | One of the folds of mucous membrane at the fimbriated extremity of the uterine tube. Synonym: plicae ampullares tubae uterinae. (05 Mar 2000) |