Reproduction,EarlyDev,Pregnancy

Reproduction,EarlyDev,Pregnancy - Reproduction Early...

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Frolich, Human Anatomy, Reproduction, Early Reproduction, Early Development, Pregnancy l 1. From 2 cells …a 3-layer embryo …a yolk sac, amniotic cavity, chorionic cavity …a placenta l 2. Pregnancy and Childbirth Changes to female anatomy Labor and birth
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Frolich, Human Anatomy, Reproduction, Early Ovulation 1o oocytes arrested in Meiosis I in female fetus After puberty, 1 primary oocyte/month completes Meiosis I as follicle matures Follicle ruptures-- ATTENTION--CELL LOOSE IN CELOM Oocyte enters Fallopian tube If fertilization occurs, Meiosis II occurs and oocyte becomes ovum
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Frolich, Human Anatomy, Reproduction, Early Ovulation and Meiosis Fig. 24.15
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Frolich, Human Anatomy, Reproduction, Early Spermatogenesis Sperms form in walls of seminiferous tubules Spermatogenic cells within sustentacular cells Meiosos proceeds as spermatocytes move towards lumen (4 sperm from each spermatocyte) Seminiferous tubule rete testis head/body/tail epididymis vas deferens (through spermatic cord around bladder) urethra Seminiferous tubule rete testis head/body/tail epididymis vas deferens (through spermatic cord around bladder) urethra Fig. 24.3
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Frolich, Human Anatomy, Reproduction, Early Sustentacular cells Form thick epithelial lining of seminiferous tubules Tight junctiones between keep sperm proteins from entering bood
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Reproduction,EarlyDev,Pregnancy - Reproduction Early...

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