BIOM 3040 Study Guide - Final Guide: Anterior Pituitary, Centrosome, Zona Pellucida
30 Jan 2018
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Document Summary
Two types: a (stem cell population) and b (enter meiosis) Dna replication occurs to make primary spermatocyte. Secondary spermatocyte: result of completion of meiosis 1. Spermatid: haploid non functional at this point, result of completion of meiosis 2, undergo spermiogenesis. Spermatid undergoes post-meiotic morphological changes to form sperm. Final maturation of sperm occurs in female fallopian tubes. Sperm produced in seminiferous tubules and make their way into rete testis before the vas deferens. Spermatogenic wave some tubules more active than others: ca(cid:374)"t use all at once because it takes a long time to make sperm, active at different times to ensure continuous supply of sperm. Sit on basement membrane of seminiferous tubules and extend to lumen. Holds spermatogonia in place and important for blood/testis barrier. Regulate the formation and release of spermatozoa. Secretion of critical proteins: growth factors, abp = androgen binding proteins. Phagocytosis of residual bodies so cellular constituents can be recycled.
