Hormonal Control of Reproduction Flashcards
which hormone is released from the hypothalamus at the start of puberty?
releaser hormone
what is the target tissue for the releaser hormone?
the pituitary gland
what does pituitary gland release
males- Folicle stimulating hormone (FSH) and intersticial cell stimulating hormone (ICSH)
females- Folicle stimulating hormone (FSH) and Lutenising hormone (LH)
What effect does FSH have on the testes?
Simulates the seminiferous tubules to produce sperm
What effect does ICSH have on the testes?
stimulates the interstitial cells to produce testosterone
What effect does testosterone have on the prosthetic and seminal vesicles?
secretes seminal fluids and stimulates tubules to produce sperm
what happens when there are high levels of testosterone in the blood?
ICSH and FSH are inhibited and the intersticial cells and seminiferous tubules aren’t stimulated and testosterone secretions decrease
what are the two phases of the menstrual cycle?
- the follicular phase
- luteal phase
what effect does FSH have on the ovaries?
it’s responsible for the development and maturation of a single ova and it’s follicle.
what is the function of a follicle?
- to protect the ova
- to secrete oestrogen
what is the impact and target tissue for oestrogen?
oestrogen encourages the repair and proliferation of the endometrial lining in preparation for the implantation of a zygote
what is the result of increased oestrogen levels at the pituitary gland?
it stimulates the secretion of LH
what happens to the follicle after ovulation?
it becomes a corpus luteam and secretes progesterone
what is the impact and target tissue for progesterone?
the endometrial lining- it continues the thickening and vascularisation of the endometrium
way effect do high levels of progesterone and oestrogen have on the pituitary gland?
causes negative feedback to prevent the maturing and release of another ova
