MICROANATOMY

URINARY SYSTEM AND MALE FEMALE REPRODUCTIVE SYSTEMS

FEMALE REPRODUCTIVE TRACT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Role of estrogen
A
Releases egg
B
Helps the Uterus
C
Helps release more L.H
D
Removes waste
Explanation: 

Detailed explanation-1: -At this point, high oestrogen secretions from the ovary stimulate a surge of luteinising hormone from the pituitary gland, which triggers ovulation. The fine tuning of luteinising hormone release is vital to maintaining fertility.

Detailed explanation-2: -In contrast, LH is low during the early follicular phase and begins to rise by the mid-follicular phase due to the positive feedback from the rising estrogen levels. For the positive feedback effect of LH release to occur, estradiol levels must be greater than 200 pg/mL for approximately 50 hours in duration (21).

Detailed explanation-3: -The effect of estrogen on FSH responsiveness is greater than on LH and is attenuated with aging. These studies indicate that estrogen negative feedback occurs directly at the pituitary and contributes to the differential regulation of FSH and LH secretion.

There is 1 question to complete.