ZOO 3733C Lecture Notes - Lecture 22: Median Umbilical Ligament, Superior Mesenteric Artery, Inguinal Canal
Document Summary
The transpyloric plane passes through the tip of the ninth costal cartilage anteriorly to the l1 vertebra posteriorly in the supine position. This plane transects several structures including the: pylorus of the stomach, superior part of the duodenum, duodenorenal flexure, fundus of the gallbladder, origin of the superior mesenteric artery. Lacunar (gimbernat"s) ligament is a triangular ligament at the angle between the medial insertion point of the inguinal ligament and the pectineal line of the pubic bone. Its lateral free edge continues laterally along the pectineal line as the pectineal (cooper"s) ligament. Cryptorchidism refers to the absence of one or both testes in the scrotum, typically due to a failure of the testes to descend through the inguinal canal during development. In embryonic development, the primordial testis is an intraabdominal organ located in the superior lumbar region, in the extraperitoneal connective tissue of the posterior abdominal wall.
