Organs Hormonal Control Reproductive System Organs Hormonal Control

Male Reproductive System Seminal vesicle: fructose, prostaglandins for semen Penis: erectile organ Prostate gland: alkaline secretion for semen Urethra: exit tube for semen Bulbourethral gland: mucoid fluid for semen Vas Deferens: sperm transport Epididymis: sperm maturation Scrotum: suspends testes Testis: sperm production

Sperm Formation Site of sperm production within testis Contains enzymes for digesting through the egg’s protective coat Contains chromosomes Has mitochondria for energy release For movement

Hormonal Regulation in Males Gonadotropin Releasing Hormone stimulates Pituitary to release LH, FSH Follicle Stimulating Hormone Luteinizing Hormone Negative feedback to pituitary & hypothalamus Negative feedback to pituitary & hypothalamus Male sex characteristics

Applying Your Knowledge Epididymis Prostate Gland Testis Urethra Vas Deferens Which one produces an alkaline secretion as part of semen? From which one do sperm exit the body? Where are sperm produced? 2 4 3

Female Reproductive System Fallopian tube: egg transport, site of fertilization Ovary: egg production Uterus: site of fetal development Female Reproductive System Vagina: birth canal, exit for menstrual flow, site of sexual intercourse Clitoris: erectile organ

Ovarian Cycle immature egg 1. Primary follicles contain oocyte and begin producing the sex hormone estrogen

Hormonal Regulation in Females Stimulates Pituitary to release FSH, LH Follicle Stimulating Hormone: development of follicle, containing egg Luteinizing Hormone: controls ovulation, development of corpus luteum Estrogen: produced in ovary, stimulates thickening and vascularization of uterine lining Progesterone: produced in ovary, stimulates increased thickening of uterine lining Estrogen and Progesterone exert negative feedback on hypothalamus and pituitary Female sex characteristics

Hormone Levels in Ovarian and Uterine Cycles

Fertilization and Implantation Fertilization: Sperm enters egg Implantation: embryo attaches to uterine lining

Applying Your Knowledge LH FSH Estrogen Progesterone Testosterone Which hormone stimulates egg development? Which hormone stimulates sperm development? Which hormone maintains the buildup of the uterine lining? 2 2 4