PHAR 1002 Lecture Notes - Lecture 7: Erythropoiesis, Hydrocele, Varicose Veins
Document Summary
Median septum: divides the scrotum into two parts. Provides a cooler environment for the testes than that of inside the body. Small, oval organ about 2 inches long and inches wide. Covered by a serous membrane tunica vaginalis. Several layers of germ cells are in the process of becoming sperm. Major androgen produced by the interstitial cells. Stimulates spermatogenesis sperm levels peak at age 20 and slowly decrease to of that level by age 65. Stimulates the development of male secondary sex characteristics at puberty. Enlarges the spermatic ducts and accessory glands of the male reproductive system. Stimulates a burst of growth at puberty. Stimulates erythropoiesis gives men a higher red blood cell count than women. Stimulates the brain to increase libido (sex drive) in the male. Process in which the germ cells of the seminiferous tubules mature and divide (mitosis) and then undergo two divisions called meiosis. Four daughter cells differentiate into spermatids and then spermatozoa (sperm)
