chpt 16 reproduction in humans

Question 1

what happens from days 1-5 of menstrual cycle ?

Answer 1

1. uterine lining breaks down and flows out of body through vagina
2. pituitary gland secretes follicle stimulating hormone into the blood stream

Question 2

What happens from days 6 -13 of menstrual cycle ?

Answer 2

1. fsh stimulates
   dvlpment of follicles in the ovaries
   estrogen secretion by dvlping follicle
2. estrogen causes
   repair and growth of uterine lining
   inhibits fsh production
   stimulates pituitary gland to secrete luteinising hormone

Question 3

What happens on day 14 of the menstrual cycle ?

Answer 3

1. LH causes ovulation and formation of corpus luteum
2. corpus luteum secretes progesterone

Question 4

What happens on days 15-18 of menstrual cycle ?

Answer 4

1. progesterone maintains uterne lining for the fertilised egg
   maintains and thickens uterine lining
   supplying it with nutrients from blood capillaries
   inhibits
   fsh production
   ovulation