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what does in the increase in progesterone levels do in the femal reproductive system?
functional layer has secretory mucosa
: secrete nutrients
formation of cervical mucus plug
what are the primary organ and sex cells of the male reproductive system?
testes, which produce sperm called spermatozoa and secrete androgens
what are the accessory reproductive organs?
sperm delivered to exterior through ducts
glands secrete fluids that comprise semen volume
external genitalia (penis) functions in delivering sperm
what is the scrotum?
a sac of skin and superficial fasica that contains paired testes
how are the temperature of the testes kept constant
: smooth muscle; wrinkles scrotal skin; pulls scrotum close to body
: bands of skeletal muscle that elevate testes
what is the spermatic cord?
encloses nerve fibers, blood vessels, lymphatics that supply the testes