Day 1
Start of Menses
Developing Follicle
Day 2
Menses
Day 3
Menses
Day 4
Menses
Day 5
Endometrium starts
to regenerate
Day 6
Day 7
Follicle starts to
Mature
Day 8
Day 9
Day 10
Day 11
Day 12
Day 13
Day 14
Ovulation
Day 15
Day 16
The lining of the
uterus continues to
thicken.
Day 17
Day 18
Day 19
Day 20
Day 21
Day 22
Day 23
Day 24
Day 25
Day 26
Day 27
Day 28
End of the Cycle
Start of a new Cycle
Day 1
Start of Menses
Developing Follicle
Day 2
Menses
Day 3
Menses
Day 4
Menses
Day 5
Endometrium starts
to regenerate
Day 6
Day 7
Follicle starts to
Mature
Day 8
Day 9
Day 10
Day 11
Day 12
Day 13
Day 14
Ovulation
Day 15
Egg cell meets sperm
cell in the fallopian
tube.
Day 16
Day 17
Fertilized egg starts
to move down the
uterus.
Day 18
Day 19
Day 20
Day 21
Day 22
Fertilized egg
attached to the
uterine wall.
Day 23
Day 24
Day 25
Day 26
Day 27
Day 28
Mark My Calendar
Objective: Describe the feedback mechanisms involved in regulating processes in the female reproductive system.
Guide Questions:
1.
2.
3.
4.
5.
How long does a regular menstrual cycle last?
Describe what happens to an egg during the 1st 14 days of the cycle in Part A.
Describe what happens to the egg if fertilization occurs.
Explain what takes place in the uterus after fertilization.
Why is it important to study menstrual cycle?