PHIL 2130 Chapter Notes - Chapter 5.2: Seminal Vesicle, Rete Testis, Ilioinguinal Nerve
6 May 2020
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Pressure generated by fluid produced by sertoli cells pushes sperm along seminiferou s tubules into straight tubules (rete testis), efferent ducts in epididymis and then ductus epdidiymis. Conveys sperm during sexual arousal through peristaltic contractions of its muscular cost (inner longitudinal, middle circular and outer longitudinal smooth muscle layers) Has pseudostratifie d columnar epithelia that touches basal lamina. Stereocilia are microvilli that reabsorb degenerate d sperm. Site of sperm maturation- acquire motility and ability to fertilize. Consists of ductus deferens as it ascends through scrotum, testicular artery, veins that drain testes and carry testosteron e, lymphatic vessels and cremaster muscle. Spermatic cord and ilioinguinal nerve pass through inguinal canal. Formed by union of duct from seminal vesicle and ampulla of ductus deferens. Eject sperm and seminal vesicle secretions just before release of semen into urethra. Shared terminal duct of reproductiv e and urinary systems. Subdivided into prostatic urethra, membranou s urethra and spongy urethra.
