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HLSC 2F95 (54)
B Jeynes (10)
Lecture

CHSC 2F95 lecture # 11.docx

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Department
Health Sciences
Course
HLSC 2F95
Professor
B Jeynes
Semester
Fall

Description
CHSC 2F95 Lecture #11 (last lecture before exam!!) - Reproductive System!!! - Reproductive System - Men - Mina points today - - the reproductive systems are structured to produce haploid gametes from each sex - - the female reproductive system is structured to potentially.. - Primary Sex Organs - testes - spermatozoa – androgens - ovaries - ova - estrogens - Accessory Sex Organs - - epididymus, ductus deferens, seminal vesicles, prostate gland, bulbourethal gland, scrotum, penis - The Penis - 2 - Fig. 27-9 - The Male Reproductive System - Fig. 27-1 - The Descent - Fig. 27-2 - - start on the posterior wall - Male Reproductive System - 2 - Fig. 27-3 - - testes (under cold temperatures & fight or flight conditions) become closer to be protected (body warmth) - The Testes - Fig. 27-4 - - different lobules contains within the testes, that have long tubule structure - - we reduce the number of tubes, eventually turning into one, there is vascularization - The Epididymus - Fig. 27-7 - - there are cells within of the wall and periphery - Blood-testis barrier - Fig. 27-5d - - interstitial cells aka - - only half the cells move up, after meiosis - there is a reduction (haploid number of chromosomes) - - prevents active immunological cells from attacking haploids - so they can mature into spermatozoids - Seminiferous tube regulatory cells - - interstitial (leydig) cells - - produce androgens (especially testosterone) - - spermiogenesis - - maturation of spermatozoa - - maintain accessory reproductive organs - - development of secondary sexual characteristics - - global growth & metabolism - - influence brain development-sexual behavior/drive - - nurse (sustentacular, sertoli) cells - - formation & maintenance of blood-testis barrier - - support for spermatogenesis (FSH & testosterone) -
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