Reproductive System Flashcards
(29 cards)
Why are testes located outside of the body cavity
they require lower-than-average- body temperature for sperm development
What is an exocrine gland
located in testes
sperm cells are secreted from here
what is an endocrine gland
where testosterone is secreted
Three main functions of testosterone
- sex organ development/maintenance
- sperm cell development/maturation
- secondary sex chRACTERISTICS
what is the epididymas
- site of sperm cell maturation (1-3 days)
- Assembles sperm (head/body/tail)
What is the ducts deferens
sperm from epididymas through abdominal cavity, receives secretions from sex glands to add sperm
What is the ejactulatory duct
the joining of ducts deferens and seminal vessicle
the end is at urethra within prostate gland.
What is the seminal vessicle
- 60% of semen is from here
- empties into ejactulatory duct
- contains fibrinogen
- Is alkaline
- secretes prostaglandin
- contains fructose
Why does the seminal vessicle secrete alkaline substances
to neutralize ph of female vagina
what is prostaglandin
substance that stimulates small vaginal and uterine contractions
why does the seminal vessicle secrete fructose
for an energy source for sperm
Describe Prostate gland
- secretes 30% of semen
- thin,milky secretion
- high in ph to buffer
- contains clotting factors and fibrinogen
what male sex glands secretes clotting factors and fibrinogen
seminal vessicle, prostate gland
how much of semen comes from seminal vessicle
=
60%
how much of semen comes from prostate gland
30%
Describe cowpers gland
5% of semen
- alkaline mucous secretion- happens just before ejaculation
- helps neutrlize acidic urine in urethra
When does the cowpers gland release
just before ejaculation
why does the cowpers gland release just before ejaculation
it helps neutralize the acidic urine in the male urethra
describe urethra
extend from urinary bladder to distal end of penis
passageway for urine and male reproductive fluids
function of teh three layers in the penis
engages with blood for extension and easier injection of semen into vagina
what is spermatogenisis
meiosis occurs to create haploid sperm in seminiferous tubules when FSH is released from anterior pituitary
At puberty, what is secreted from hypothalamus
GnRH
function of GnRH
increases LH and FSH release which promotes sperm formation and large ammounts of testosterone secretion
what is the function of fsh
premote sperm formation
