ampulla /am·pul·la/ (am-pul´ah) pl. ampul´lae [L.] a flask-like dilatation of a tubular structure, especially of the expanded ends of the semicircular canals of the ear.ampul´lar
ampulla
ampulla
ampulla chy´li cisterna chyli.
ampulla duc´tus deferen´tis the enlarged and tortuous distal end of the ductus deferens.
hepatopancreatic ampulla , ampulla hepatopancrea´tica the dilatation formed by junction of the common bile and the pancreatic ducts proximal to their opening into the lumen of the duodenum. 
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Ampulla hepatopancreatica (hepatopancreatic ampulla), receiving the common bile and pancreatic ducts and entering the duodenum at the major duodenal papilla.
ampul´lae lacti´ferae lactiferous sinuses.
ampul´lae membrana´ceae membranous ampullae: the dilatations at one end of each of the three semicircular ducts, anterior, lateral, and posterior.
ampul´lae os´seae the dilatations at one of the ends of the semicircular canals, anterior, lateral, and posterior.
phrenic ampulla a dilatation sometimes seen at the lower end of the esophagus.
rectal ampulla , ampulla rec´ti the dilated portion of the rectum just proximal to the anal canal.
ampulla of Thoma one of the small terminal expansions of an interlobar artery in the pulp of the spleen.
ampulla of uterine tube the thin-walled, almost muscle-free, midregion of the uterine tube; its mucosa is greatly plicated.
ampulla of vas deferens a. ductus deferentis.
am·pul·la ( m-p l  , -p l)n. pl. am·pul·lae (-p l , -pl) A dilated portion of a canal or duct, as in the semicircular canal of the ear. am·pul lar adj. |
ampulla
[ampo̅o̅l′ə] pl. ampullae,
Etymology: L, flasklike bottle
a rounded, saclike dilation of a duct, canal, or any tubular structure, such as the lacrimal duct, semicircular canal, fallopian tube, rectum, or vas deferens.
ampulla
pl. ampullae [L.] a flasklike dilatation of a tubular structure, especially of the expanded ends of the semicircular canals of the ear. See also ampullar.
ampulla chyli
cisterna chyli.
ampulla coli
the enormously dilated part of the right dorsal colon of the horse.
ampulla ductus deferentis
the enlarged glandular urethral end of the ductus deferens.
Henle's ampulla
ampulla ductus deferentis.
hepatopancreatic ampulla
ampulla of Vater; in humans, a flasklike cavity in the major duodenal papilla into which the common bile duct and pancreatic duct open.
Lieberkühn's ampulla
the blind termination of the lacteals in the villi of the intestines.
ampullae membranaceae
the dilatations at one end of each of the three semicircular ducts.
ampullae osseae
the dilatations at one of the ends of the semicircular canals.
phrenic ampulla
the dilatation at the diaphragmatic end of the esophagus in some species.
rectal ampulla
the dilated portion of the rectum just proximal to the anal canal, prominent in the horse.
ampulla of Thoma
one of the small terminal expansions of an interlobar artery in the pulp of the spleen.
uterine tube ampulla
the longest and widest portion of the uterine tube, between the infundibulum and the isthmus of the tube.
vas deferens ampulla
dilatation of the terminal part of the vas deferens caused by glandular thickening of the wall.
ampulla of Vater
hepatopancreatic ampulla.
ampulla
A saclike enlargement of a duct or tube 1. Ampulla of Vater, formally, hepatopancreatic ampulla 2. Ampule
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