bnns502 - male reproductive system
Questions and Correct Verified Answers
tissue type, location and function of scrotum
✓ skin and connective tissue, located at base of penis. midline septum divides
scrotum for each testi. regulates temperature of the testes (2-3 degrees cooler
than body temp)
function of cremaster muscle
✓ pulls testes closer to pelvic floor
anatomy of internal testes
✓ divided into lobules, lobules contain seminiferous tubules.
tissue type and function of seminiferous tubules
✓ smooth muscle, push sperm and testicular fluid towards epididymous
what two cell types inhabit seminiferous tubules
✓ spermatogenic (germ cells) and sustentacular
what is spermatogenesis and what two hormones facilitate this
Top Mark !!!
, Top Mark Questions and Correct Verified Answers
✓ formation of sperm cells by meiosis in seminiferous tubules in lobules of testes
(starts abt 14yo and 200-400 million sperm produced p/d). follicular stimulating
hormone and testosterone
functions of sustentacular cells (3)
✓ provide nutrients and support of germ/sperm cells, produce testicular fluid,
control release of sperm into lumen of seminiferous tubule
sperm cell anatomy (4)
✓ acrosome - enzyme filled cap structure on top of head
✓ head/nucleus - flattened and pointed with 23 chromosomes
✓ midpiece - contains mitochondria to provide energy for tail
✓ tail - propels sperm
What does Gondatropin releasing hormone do
✓ released from hypothalamus to anterior pituitary gland, stimulates release of
FSH and LH.
what roles do FSH and LH have in spermatogenesis
✓ FSH - stimulates spermatogenesis
✓ LH - releases testosterone from interstitial cells
3 functions of testosterone
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