Reproductive+Anatomy+NLL

Reproductive System Anatomy (This begins unit 5: Oh Baby) Male Reproductive Anatomy (p.321) Scrotum- pouch of skin that encloses testes Testis- produces sperm and sex hormones Seminal vesicles- contribute nutrients and fluid to semen Epididymis- ducts where sperm mature and some sperm are stored Vas deferens (also called ductus deferens)- conducts and store sperm Urethra- conducts sperm Bulboourethral gland- contribute mucus-containing fluid to semen Prostate gland- contributes fluid to semen Penis- organ of sexual intercourse

Sperm production anatomy Seminiferous tubules- long, coiled structure contained within chambers of the testes; where sperm are produced Sertoli cells- cell associated with developing germ cells in seminiferous tubule; secretes fluid into seminiferous tubule and mediates hormonal effects on tubule. Sperm (head, middle, tail)- Mitochondria in the middle piece provide energy for the movement of the tail, which is a flagellum. The head contains a nucleus covered by a cap called the acrosome, which stores enzymes needed to penetrate the egg. Acrosome- stores enzymes needed to penetrate the egg.

Female Reproductive System Ovaries- produces eggs and sex hormones Fimbria- finger-like projections that sweep over the ovaries Oviducts (also called fallopian tubes, uterine tubes)- conduct eggs; location of fertilization Uterus- houses developing fetus Endometirum- lining of the uterus, participate in the formation of the placenta. Vagina- receives penis during sexual intercourse; serves as birth canal and as an exit for menstrual flow Cervix- narrow end of the uterus, which projects into the vagina Vulva- external genitals of the female that surround the opening of the vagina