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21.1 Male Reporductive System

Terms

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testes
produce sperm and sex hormones
epididymides
ducts where sperm mature and some sperm are stored
vas deferens
conduct and store sperm
seminal vesicles
contribute nutrients and fluid to semen
prostate gland
contributes basic fluid to semen
urethra
conducts sperm
bulbourethral glands
conribute mucoid fluid to semen
penis
organ of sexual intercourse
erectile dysfunction
when erectile tissue doesn't expand enough to compress the veins
seminiferous tubules
1-3 tubules inside the lobules inside the testis
spermatogenesis
production of sperm
sperm
made up of three distinct parts:
1. head
2. middle piece
3. tail
acrosome
a cap over a nucleus; stores enzyme needed to penetrate the egg
interstitial cells
cells containing androgens between the seminiferous tubules
gonadotropin-releasing hormone (GnRH)
a hormone from the testes that stimulates the anterior pituitary to secrete the gonadotropic hormones
follicle-stimulating hormone (FSH)
gonadotropic hormone; promotes the production of sperm
luteinizing hormone (LH)
gonadotropic hormone; controls the production of testosterone
interstitial cell-stimulating hormone (ICSH)
controls the production of testosterone by the interstitial cells
testosterone
main sex hormone in males; for normal development of sex organs
testis
1. interstitial cells produce testosterone
2. seminiferous tubules produce sperm plus inhibin

Deck Info

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