Jo-Ann Botter
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Duke Embryology - Craniofacial Development

Duke Embryology - Craniofacial Development

Duke Embryology - Craniofacial Development

Duke Embryology - Craniofacial Development

ltlHYPOTHL (1)

ltlHYPOTHL (1)

External development of male and female genitalia

External development of male and female genitalia

Female reproductive System......

Female reproductive System......

Pharyngeal Arches

Pharyngeal Arches

Development of Human Embryonic Tissues.

Development of Human Embryonic Tissues.

Spermatogenesis and Oogonim

Spermatogenesis and Oogonim

Difference between Spermatogenesis and Oogenesis

Difference between Spermatogenesis and Oogenesis

Oogenesis: diploid germ cells in ovary: oogonia, mitosis primary oocytes, meiosis 2 daughter cells diff. size; 2nd oocyte (large): 95% cytoplasm; polar bdy usually arrests develop; 2nd. oocyte divides to large ovum & 2nd polar bdy; only 1 funct. ovum; 22 auto + X chrom; begins fetus, 6th mths ovaries frmd, primary oocytes in diplotene, puberty: release 1 prim. oocyte per month from alt. ovaries; ovulation: oocyte meios. I, metaphase meios. II, when fert, meiosis II, menses: unfert. oocytes…

Oogenesis: diploid germ cells in ovary: oogonia, mitosis primary oocytes, meiosis 2 daughter cells diff. size; 2nd oocyte (large): 95% cytoplasm; polar bdy usually arrests develop; 2nd. oocyte divides to large ovum & 2nd polar bdy; only 1 funct. ovum; 22 auto + X chrom; begins fetus, 6th mths ovaries frmd, primary oocytes in diplotene, puberty: release 1 prim. oocyte per month from alt. ovaries; ovulation: oocyte meios. I, metaphase meios. II, when fert, meiosis II, menses: unfert. oocytes…