IB Biology HL 2.4.7.5 Menstrual-cycle feedback and hormone data Question Bank

a. FSH promotes estrogen secretion (by the follicle)

OR

FSH promotes follicle development and follicles secrete estrogen;

b. (high levels of) estrogen inhibits FSH secretion (by the pituitary gland);

c. (high levels at ovulation of) estrogen promotes LH secretion (by pituitary gland);

d. LH promotes progesterone secretion (by the corpus luteum)

OR

LH induces corpus luteum development and the corpus luteum secretes progesterone;

e. (high levels of) progesterone inhibits LH/FSH secretion (by the pituitary gland);

f. progesterone secretion decreases due to reduced LH/FSH (concentration);

g. FSH secretion increases due to reduced progesterone (concentration)

OR

decrease in progesterone restarts the cycle;

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