SOCI 113 Lecture Notes - Lecture 12: Oogenesis, Cella, Erectile Tissue
Document Summary
Gonad- primary sex organ testis in male ovary in female produce: 1. Fertilization results in a cell with 23 chromosomes from each parent (46 total) ** inside a testis is yellowed coiled tubes called seminiferous tubules. Produce fluid, control release of sperm into lumen secrete inhibin (slows sperm production) 46 chromosomes eventually become a cell with 23 through meiosis! Spermatogenesis- whole process of sperm production including meiosis. Sperm morphology: adapted for reaching/penetrating ovum (egg, head- contains chromosomes and acrosome (enzyme to crack egg, midpiece- contains mitochondria (make atp, tail- flagellum for mobility. Gnrh creates increase lutenizing hormone and an increase in follicle stimulating hormone from anterior pituitary. Hormonal effects of testosterone sexual behaviour, libido changes at puberty. Male metabolism (bone, muscle mass; beard, body hair etc) Inhibin is a protein hormone released from sertoli cells when sperm production is sufficient (>20 million/ml) Inhibits fsh secretion by the anterior pituitary sperm production.
