Embryo1(6)

Embryo1(6) - General Biology 101 Dr. Morrison Lecture:...

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General Biology 101 Dr. Morrison Lecture: Embryonic Development -- Part I Question of the Day How do you get from this (.) to. .. Ovulation Female born with 400,000 oocytes One ovum released per month FSH stimulates follicles of ovary to ripen LH (lutenizing hormone) triggers ovulation (ripest follicle bursts, releasing ovum) Ovum Ovum travels 4-5 days down muscular, cilia-lined Fallopian tube (oviduct) Ovum (0.1 mm) surrounded by -- zona pellucida (clear zone, jelly-like) -- “nurse” cells Unfertilized ovum dies after 48 hours Testes Seminiferous tubules (2 x 400 ft) produce sperm when stimulated by FSH. Interstitial cells produce testosterone when stimulated by LH. Vasectomy Vasectomy cuts vas deferens (sperm duct), not the blood vessels carrying testosterone. Contrast castration. Seminal fluid (3 ml/ejaculate) Testes = 300-400 million sperm Seminal vesicles = fructose (sugar) for sperm motility Prostate = alkaline fluid to neutralize the normal acidity of female reproductive tract
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This note was uploaded on 09/28/2010 for the course BIO 101 taught by Professor Martin during the Fall '08 term at Rutgers.

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Embryo1(6) - General Biology 101 Dr. Morrison Lecture:...

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