SME
Grade 9 Science · Problem type
Hormone levels through a cycle
Use this for “Which hormone keeps the uterine lining in the second half of the cycle?”
Record and look
10
5
40
5
100
10
50
100
15
10
Day 1
Day 7
Day 14
Day 21
Day 28
% of peak
Day 1
Day 7
Day 14
Day 21
Day 28
Estrogen
10
40
100
50
15
Progesterone
5
5
10
100
10
Estrogen
Progesterone
Estrogen peaks first, by day 14, rebuilding the lining; progesterone peaks later, by day 21, keeping it.
Tap a bar at the height you want.
Assumptions
•
Levels are shown as a share of each hormone’s highest level, 0 to 100.
•
The days are for a typical 28-day cycle; real cycles vary.
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