KA2- Hormonal Control Of Repoduction

Question 1

Hormonal influence on puberty

Answer 1

Pituitary gland is stimulated to release follicle stimulating hormone (FSH), luteinising hormone (LH) or interstitial cell stimulating hormone (ICSH) by a releaser hormone produced in the hypothalamus.
This triggers the onset of puberty.

Question 2

Oestrogen

Answer 2

Oestrogen stimulates proliferation of the endometrium preparing it for implantation, and affects the consistency of cervical mucus making it more easily penetrated by sperm.

Question 3

The negative feedback effect (if fertilisation does occur in females)

Answer 3

If fertilisation does occur the corpus luteum does not regenerate and progesterone levels remain high