Amplitude

(am' -ple-tud). The range or extent, as of vibrations and undulations, the pulse, etc. Ampulla (am-pul'-ah). The trumpet-mouthed or dilated extremity of a canal, as of the lachrymal canal, the receptaculum chyli, the Fallopian tubes, mammary ducts, semicircular canals, vas deferens, etc. Chemically, the term denotes a large-bellied bottle. A. of Bryant, the apparent distention of an artery immediately above a ligature, due to the contraction of the ve el above the ampulla where it is not completely filled wi(h clot. A. Chyli, the receptaculum chyli. A., Lieberkuhn's, the cecal terminus of one of the lacteals in the villi of the intestines. A.of Rectum, the portion above the perineal flexure. A. of Vater, the site of entrance of the common bile-duct and pancreatic duct into the duodenum.