Physiology 2130 Lecture Notes - Lecture 13: Labia Minora, Androstenedione, Lean Body Mass

• School: Western University
• Department: Physiology
• Course: Physiology 2130
• Professor: Christine Bell

Document Summary

Function of the reproductive system is to pass on the genes of individuals to maintain the species o. The reproductive system: fetal development of the reproductive system. Each cell contains 23 pairs of chromosomes. Sex chromosomes: x chromosome and smaller y chromosome o. Eggs contains an x chromosome, sperms may contain an x or y chromosome. During the first 6 weeks, males and females contain the same common gonads (indifferent gonads) At 6 or 7 weeks, the presence of the y chromosome causes the indifferent gonads to develop into the testes. At 9 weeks in the female embryo, the xx chromosomes are activated and ovaries develop. Male: at 7 weeks, testicular cells begin to produce mullerian inhibiting hormone (mih), causes the mullerian duct to regress, at 9 weeks, testicular cells begin to produce testosterone. Small surge of testosterone stimulates the wolfian duct to develop into the epididymis, vas deferens, seminal vesicles, and urethra.