Download LH and FSH are secreted by the PITUITARY GLAND - School

THE MENSTRUAL
CYCLE
Menstruation
(period)
EGG
RELEASED
ON DAY 14
CONTROLLED BY 3 HORMONES
1.OESTROGEN
2.FSH (Follicle Stimulating
Hormone)
3.LH (Leutinising Hormone)
LH and FSH are secreted
by the PITUITARY GLAND
in the brain.
Firstly, FSH
STIMULATES
AN EGG IN
ONE OVARY
TO MATURE.
2. MATURE EGG
1.UNDEVELOPED
EGGS
4. REMAINS
OF EGG
3.RELEASED
EGG
OESTROGEN
• THE MATURING EGG
(FOLLICLE) PRODUCES
OESTROGEN.
• OESTROGEN THICKENS
THE UTERUS LINING FOR
POSSIBLE EGG
IMPLANTATION.
• Complete Menstrual cycle work sheet.
Lastly, LH
CAUSES AN
EGG TO BE
RELEASED
FROM THE
OVARY.
2. MATURE EGG
1.UNDEVELOPED
EGGS
4. REMAINS
OF EGG
3.RELEASED
EGG
FSH: Egg
Maturation in
ovary
LH: Egg
release
(Ovulation)
TASKS: Text book pp 24-25
1. Answer Qs 1-4.
2. Make notes about the contraceptive pill
and possible risks with taking it. (p25).
3. Answer the ‘Science Skills’ question.
4. Answer Q5.
5. Make notes on Fertility drugs.
6. Answer Q6.