Use IB Biology HL D3.1.5 questions to link FSH, LH, oestradiol and progesterone with follicle growth, ovulation, corpus luteum, endometrium changes and menstruation.
Hormones are produced in plants and animals and cause changes in the organism.
Outline hormone feedback mechanisms in the menstrual cycle.
| 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; |