初级精母细胞 A型 细线期偶线期 精原细胞 ③ A型 粗线期 B型 减数分裂 精子形成 次级精母 细胞 精子细胞 残余体 精子 16 2021/2/21
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Acrosome Nucleus Proximal centriole Distal centriole Connectin ece End piece Middle piece Mitochondrial-k elIX Annulus 5 Principal piece 2021/2/21
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SPERM a Condensed nucleus with haploid XY a Flagellum and mitochondrial sheath a Acrosome containing enzymes Membrane with ovum-recognizing ligand 18 2021/2/21
18 2021/2/21 SPERM ◼ Condensed nucleus with haploid (X/Y) ◼ Flagellum and mitochondrial sheath ◼ Acrosome containing enzymes ◼ Membrane with ovum-recognizing ligand
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Sertoli cell a Support and nutrition Blood-testis Barrier Secretion: Androgen Binding Protein Inhibin Phagocytosis 20 2021/2/21
20 2021/2/21 Sertoli Cell ◼ Support and nutrition ◼ Blood-testis Barrier ◼ Secretion: Androgen Binding Protein Inhibin ◼ Phagocytosis