Human reproductive hormones

Question 1

At puberty, what do hormones causes the development of?

Answer 1

Sexual characteristics , e.g facial hair in men and breasts in women, and eggs to mature in women.
In men, main reproductive hormones is testosterone, in women, main reproductive hormone is oestrogen.

Question 2

What is the four stages of menstrual cycle?

Answer 2

1. Bleeding starts, uterus lining breaking down.
2. Uterus lining builds up again from day 4 to 14, builds a spongy layer for a fertilized egg,
3. Egg develops and is released from ovary at day 14 - ovulation.
4. Wall is maintained from 14-28.

Question 3

What are the four hormones that controls mental cycle, what do they do?

Answer 3

FSH - causes egg to mature.
LH - Causes release of egg.
Oestrogen and Progesterone - growth and maintenance of uterus lining.