menstrual cycle

Question 1

FSH

Answer 1

follice stimulating hormone; causes production and maturation of egg
- produced in pitutary gland

Question 2

LH

Answer 2

• stimulates release of egg

produced in pitiutary gland

Question 3

estrogen

Answer 3

stimuales release of LH and development of endometrium + negative feedback with FSH

Question 4

progesterone

Answer 4

maintains endometrium and inhibits FSH and LH production; if fertlization doesnt occur progesterone levels fall

Question 5

menstrual cycle steps

Answer 5

1. FSH stimulates follicle maturation and ovarian production of estrogen
2. higher levels of estrogen cause uterus lining to thicken and for pitutary gland to stop FSH production and intiate LH production
3. LH stimulates release of mature egg on day `4. The follicle remains develop into a ‘corpus leteium’ which secretes progesterone
4. progestrone maintatins lining of uterus and inhibits FSh and LH production
5. when progesteron levels fall, th elining breaks down, which allows FSH production to restart