Oestrus cycle (Yr4)

Question 1

where is GnRH produced?

Answer 1

hypothalamus

Question 2

where does GnRH effect?

Answer 2

pituitary gland

Question 3

what hormones does the pituitary gland produce?

Answer 3

FSH and LH

Question 4

what is the effect of FSH?

Answer 4

stimulate the development of follicles within the ovary

Question 5

what is the effect of LH?

Answer 5

triggers dominant follicle to ovulate and lutenise to form a corpus luteum

Question 6

what does the developing follicle produce?

Answer 6

oestrogen (oestradiol)

Question 7

what are the effects of oestrogen produced by the developing follicle?

Answer 7

negative feedback to prevent further follicle development
show signs of oestrus (heat)

Question 8

what does the corpus luteum produce?

Answer 8

progesterone

Question 9

what is the function of the progesterone produced by the corpus luteum?

Answer 9

prepare the uterus for pregnancy

Question 10

what does oestradiol have negative feedback on?

Answer 10

hypothalamus and anterior pituitary