Normal Menstration

Question 1

What are the layers of the endometrium?

Answer 1

Functional and basalis

Question 2

What are the 3 phases of the mentral cycle? Days?

Answer 2

1. Menstrual phase (1-4) drop in E&P cause break down of functional layer
2. Proliferate phase( 5-14): follicle grows producing increasing estrogen which promotes the growth of endometrium and inhibits LH(this theca and progest)
3. Secretory phase(14-28) high estrogen causes + feedback on LH causing theca to increase progesterone = stabilizing endometrium.

Question 3

@d28 what happens if prego?

Answer 3

bhCG produced by implanted egg supports CL allowing it to continue to produce progesterone until wk 10 when placenta takes over allowing CL to degrade, bhcg levels to fall but E&P levels maintained

Question 4

LD estrogen will….

Answer 4

Inhibit LH(test+P)

Question 5

HD estrogen will….

Answer 5

Stimulate LH(test+P)

Question 6

Progesterone inhibits…

Answer 6

FSH

Question 7

Inhibit comes from….and inhibits….

Answer 7

FSH, from granulosa cells

Question 8

Prolactin production is triggered by…

Answer 8

TSH, D will block prolactin

Question 9

What happens during the menstrual phase?

Answer 9

1. Menstrual phase (1-4) drop in E&P cause break down of functional layer = period

Question 10

What happens during the proliferation phase?

Answer 10

2. Proliferate phase( 5-14): follicle grows producing increasing estrogen which promotes the growth of endometrium and inhibits at LD LH(this theca and progest)

Question 11

What happens during the secretory phase?

Answer 11

3. Secretory phase(14-28) high estrogen causes + feedback on LH causing theca to increase progesterone = stabilizing endometrium.
   * spike in progesterone and inhibit will both block FSH decreasing estrogen and resetting the cycle.