HHP 3500 Lecture Notes - Lecture 49: Paramesonephric Duct, Androgen-Binding Protein, Seminiferous Tubule
Document Summary
Reproductive endocrinology/anatomy: identify gonads in both sexes and state their fundamental functions. Gonads are ovaries and testes; serve to perform gametogenesis and secrete sex hormones: identify accessory reproductive structures of reproductive tracts. Ducts- structure through which gametes are transported. Semen into duct to mix with sperm: hormonal control of reproduction: Germ cell daughter germ cell, making lots (dipoloid, 23 pairs(one from mom, one dad) 46 chromosomes) via mitosis. 1 germ cells(23 pairs, 46 chromosomes) 4 gametes(haploid, 23 chromosomes, just single chromosomes, not pairs) via meiosis. Spermatogenesis- meiotic division produce 4- haploid spermatozoan. Oogenesis-1st meiotic division produces polar body and diploid oocyte; 2nd division produces another polar body and a haploid ova with full nutrients. 1 germ 1 ova(23 chromosomes, haploid) +2 polar bodies. Ova (23 chromosomes) + sperm (23 chromosomes) combine : describe events of meiosis that lead to genetic variability zygote (46 chromosomes, 23 pairs)