ERU-19 The Menstrual Cycle

Question 1

What is the role of the hypothalamus as it relates to the menstrual cycle?

Answer 1

Secretes GnRH to regulate the anterior pituitary gland

Question 2

What is the role of the anterior pituitary gland as it relates to the menstrual cycle?

Answer 2

Release of
FSH: controls the production of follicles
&
LH: controls ovulation

Question 3

What produces estrogen in the first half of the menstrual cycle?

Answer 3

Theca internal cells of the secondary follicles

Question 4

What is the cumulus oophorus?

Answer 4

The part of the Graafian follicle containing the oocyte

Question 5

What is the periovulatory phase?

Answer 5

The Latter part of the proliferative phase

Question 6

What is normal endometrial thickness during the different phases of the menstrual cycle?

Answer 6

Menses: <5mm. Thin and echogenic
Early proliferative: 4-8. Thickening hypoechoic
Periovulatory: 6-10. Distinct 3-line-sign
Secretory: 7-14. Thick and echogenic

Question 7

What maintains the corpus luteum in early pregnancy?

Answer 7

hcg from the syncytiotrophoblastic cells that surround the blastocyst