A&P Endocrine Cont.

A&P Endocrine Cont. - .uE Scan—tau mcfflfism...

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Unformatted text preview: .uE Scan—tau mcfflfism mmEEEzuEmENEwm w.._._..© . 2535 “A -- 8655.5 "Al ">3.-. _ . $35;ng . 92:2 5. 8a gage/9.. l d . is $93 ammozmm u Emu .. . ._ . _ E. _. __ . ./ . 33T$moa .T: . H3 _m>m_cmmo:wm ‘Imm . mcogmwmmmoi 1% d. 3336 EEGW @ . Ucm 500me r... . ‘ “u x Jyova . _m>m_ cmmgmm £91.. _ 59.35 , “iifiefi . . . . x #3. oz.va @ "5:92 _ mszEEOQ>1 N asswqaxak ,. . CNwN 3:9": c235; cargo ho :o_um_:mw._.w£ :_.Uw>_o>:_ 223235 xuuncwmu— __ a fi fi ‘ . 1% Events of oogenesis (Figure 28.19) Meiotic Events Follicle Development ' in Ovary Before birth - Oogonium (stem cell) - _ . Follicle cells MItOSIs—l _ Oocyte Primordial follicle Growth Primordial. follicle (arrested in prophase I present at birth) Childhood (ovary inactive) Each month from puberty to menopause Primary follicle Primary oocyte (still arrested in prophase l) GroyVing follicle Vesicular (Graafian) follicle Meiosis I (completed by one primary oocyte each month) Secondary oocyte First polar body (arrested in metaphase ll) Ovulated . - . secondary Meiosis ll of polar' body oocyte (mayor may=n0t occur) Meiosis || completed (only if sperm I _ , I penetration occurs) . Polar bodies 1- . -- ‘ Ovum ‘ (all polar bodies Second degenerate) polar body 6 The Benjamin/Cummings Publishing Company, Inc. ...
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A&P Endocrine Cont. - .uE Scan—tau mcfflfism...

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