ANSC 3122 Study Guide - Quiz Guide: Sigmoid Colon, Bending, Seminal Vesicle
Document Summary
Basic components of the male reproductive system: spermatic cord. Pampiniform plexus specialized vascular network containing testicular artery and t-vein. Serves as a vascular heat exchanger via countercurrent exchange mechanisms. Surrounds the spermatic cord and attaches to and supports the testis. Functions to contract and relax causing a pulsation of blood in the pampiniform plexus. Stimulated during fear causes testes to become elevated thus protecting them: scrotum. + can maintain tone (like a blood vessel) for long periods of time (unlike contraction/relaxation of skeletal muscle) Elevated temperature hypothalamus sympathetic nerves in skin increase sweating to increase heat loss. + contracts and raises testis nearer body wall (warms) Elastic bands placed midway around scrotum not allowing testis to be lowered thus warm testes. Sterility results, but with normal testosterone production (like a cryptorchid) Faster growth and decreased fat/increased skeletal muscle mass: testis. Allows for final maturation, storage, and delivery of spermatozoa to the pelvic urethra.
