ANAT 216 Lecture Notes - Lecture 27: Pseudostratified Columnar Epithelium, Ejaculatory Duct, Simple Columnar Epithelium
2 Oct 2017
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Male reproductive system: lecture 2 (reading material: chapter 26: pages 707-709; chapter 27: pages 724-728) Functions: monitor and adjust fluid composition from seminiferous tubules, recycle damaged sperms, storage and functional maturation of sperms. Ejaculatory duct empties into urethra and out penis. Histology lined with pseudostratified columnar epithelium with stereocilia. Lamina propria underneath thick layer of smooth muscle (move sperm into pelvic cavity by powerful contractions propels sperm during ejaculation) Inner longitudinal, middle circular, outer longitudinal storage and transport of the sperm. Vasectomy severing of vas deferens prevents pregnancy. They can still ejaculate b/c only a fraction of semen goes through this. Yes, but very tricky (4-5yrs of difficult procedure. 60% of semen secretions come from seminal vesicle, 30% volume from prostate, 2-3% from bulbourethral only 3-5% is actually sperm! seminal vesicles: Prostate issue indicated by blood in the pee. Prostate cancer in #2 killer in men in canada, 6th in world. Prostate specific antigen (psa) -> test for prostate cancer.
