2.1 gamete production and hormonal control of reproduction in males Flashcards
where do testes produce sperm?
Seminiferous tubules
What do the prostate gland and seminal vesicles secrete?
Fluids that maintain the mobility and viability of sperm
What is the function of the seminal vesicles?
Secrete enzymes and fructose for energy
Fructose provides energy for sperm.
What hormone does the pituitary gland release to trigger puberty?
and how are these hormones stimulated?
FSH and LH
These hormones are stimulated by a releaser hormone from the hypothalamus.
what releases FSH
FSH is released by the pituitary gland
what releases ICSH
ICSH is released by the pituitary gland
True or False: Testosterone stimulates sperm production.
True
Testosterone also activates the prostate gland and seminal vesicles.
Fill in the blank: The _______ produces alkaline substances to neutralize the acidity of the vagina.
Prostate gland
Fill in the blank: The testes produce sperm in the _______.
Seminiferous tubules
What hormones control sperm production and testosterone levels?
controlled through negative feedback by FSH and ICSH
How does an increase in testosterone levels affect FSH and ICSH secretion?
It inhibits the secretion of FSH and ICSH
This causes a decrease in the levels of these hormones.
What happens to testosterone production when FSH and ICSH levels decrease?
The volume of testosterone being produced reduces
This is a direct consequence of the negative feedback loop.
What occurs when testosterone levels decrease?
The inhibitory effect is switched off, leading to an increase in FSH and ICSH levels
This cycle helps maintain homeostasis in hormone levels.
Fill in the blank: As testosterone levels increase, the levels of FSH and ICSH _______.
decrease
What is the role of FSH in testosterone regulation?
To stimulate sperm production and testosterone levels
