encircling duct

См. также в других словарях:

• sphincter — A muscle that encircles a duct, tube, or orifice in such a way that its contraction constricts the lumen or orifice. SYN: musculus s. [TA], s. muscle [TA]. [G. sphinkter, a band or lace] s. of ampulla s. of hepatopancreatic ampulla. anatomic s.… …   Medical dictionary

• animal development — Introduction  the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by …   Universalium

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• arch — Any structure resembling a bent bow or an a.; an arc. In anatomy, any vaulted or archlike structure. See arcus. SYN: arcus [TA]. [thru O. Fr. fr. L. arcus, bow] abdominothoracic a. a bell shaped line defined by the lower end of the sternum and… …   Medical dictionary

• zone — A segment; any encircling or beltlike structure, either external or internal, longitudinal or transverse. SEE ALSO: area, band, region, space, spot. SYN: zona (1) [TA]. [L. zona] …   Medical dictionary

• fistula — An abnormal passage from one epithelial surface to another epithelial surface. [L. a pipe, a tube] abdominal f. a fistulous passage connecting one of the abdominal viscera …   Medical dictionary

• Ligament — A ligament is a tough band of connective tissue that connects various structures such as two bones. Ligament is a fitting term; it comes from the Latin ligare meaning to bind or tie. * * * 1. A band or sheet of fibrous tissue connecting two or… …   Medical dictionary

• pancreas — An elongated lobulated retroperitoneal gland, devoid of capsule, extending from the concavity of the duodenum to the spleen; it consists of a flattened head (caput) within the duodenal concavity, an elongated three sided body extending… …   Medical dictionary

• sinus — 1. [TA] A channel for the passage of blood or lymph, without the coats of an ordinary vessel; e.g., blood passages in the gravid uterus or those in the cerebral meninges. 2. [TA] A cavity or …   Medical dictionary

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• Central Asian arts — Literary, performing, and visual arts of Afghanistan, Azerbaijan, Kazakhstan, Kyrgyzstan, Mongolia, Nepal, Tibet, Turkmenistan, Uzbekistan, and parts of China and Russia. The term usually denotes only those traditions not influenced by the… …   Universalium