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