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Canada (161,538)
Psychology (4,882)
Chapter 4

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Department
Psychology
Course
Psychology 2061A/B
Professor
Mel Usselman
Semester
Fall

Description
Male sexual organs Circumcision ­ Canadian physicians do not recommend circumcision. Rates are at around  32% ­ New evidence that circumcision reduces chances of UTI, contracting HIV,  HPV Supercision  is when you make a slit on the top of the foreskin; practiced in Polynesia Subincision  is when you slit the base of the penis all the way to the urethra so that  urine falls out; practiced in central Australia.  Testes ­ Seminiferous tubules are curled tubes packed densely in the testes, responsible  for manufacturing and storing sperm (spermatogenesis) ­ Interstitial cells are in the CT between the seminiferous tubules, secret  testosterone into blood stream ­ Testes are considered endocrine glands.  ­ Contraction of the cremaster muscle is responsible for pulling testes up. Spermatogenesis ­ initial division occurs in seminiferous tubules ­ spermatogonium ­> spermatocyte ­> spermatid ­> spermatozoan/sperm ­ mature sperm = 60um ­ seminiferous tubules ­> rete testes ­> epididymis (stored ~6 weeks) ­> vas  deferens ­> prostate ­> ejaculatory duct ­>urethra ­>ejaculation Seminal vesicles  ­ 2 sac structures above the prostate. Produce 60% of seminal fluid, other 40%  is prostate. Empty fluid into ejaculatory duct to combine with sperm ­ prostate secretion is alkaline, to counteract the acidity of the vagina Cowper’s glands ­ located below prostate, empty into urethra. Produce 
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