menstrual cycle

Question 1

menstrual cycle

Answer 1

• every 28 days
• uterine wall will shed
• includes uterine and ovarian cycles

Question 2

ovarian cycle

Answer 2

• development of graafian follicle : primary follicles mature to release an egg; FSH; primary follicle develops into fluid-filled Graafian follicle
• ovulation : Graafian follicle moves to surface of ovary; LH ruptured follicle; egg is released
• formation of corpus luteum : follicle develops into corpus luteum, produces large amounts of progesterone

Question 3

what makes human ovulation unique?

Answer 3

• sexually active at anytime

- no obvious external signs

Question 4

uterine cycle

Answer 4

• changes in endometrium : oestrogen secreted to repair; oestrogen and progesterone thicken endometrium; more glandular and vascular

Question 5

menstruation

Answer 5

• high levels of oestrogen and progesterone
• negative feedback
• corpus luteum degenerates
• lining breaks down
• blood and detached tissue pass out the vagina