Class 22

Human chorionic gonadotropin (hCG)

RU-486

Spiral capillaries

Fimbria

Menarche

Menopause

Amenorrhea

Leydig cells

inhibin

interstitial cells

eunuch

castration

testes

testosterone

seminiferous tubules

Sertoli cells

spermatozoa

spermatogenesis

scrotum

vas deferens