Chapter 7 - Reproduction and Inheritance Flashcards
Edexcel iGCSE Biology
What are the roles of the hormone Oestrogen
1) Lowers FSH levels
2) Grows back Uterus lining
What are the roles of the hormone Progesterone
1) Lowers LH levels
2) Maintains Uterus lining
What is the role of FSH
Matures an egg
What is the role of LH
Releases a mature egg
Which hormone slowly increases, peaks at day 4 and then decreases?
FSH
Which hormone slowly increases from day 4, peaks at day 12/13 then decreases?
Oestrogen
Which hormone exponentially increases, peaks at day 14 then exponentially decreases?
LH
Which hormone slowly increases from day 14 and continues to increase until the end of the cycle where it either decreases again if not pregnant or maintains its levels if pregnant?
Progesterone