alleryThe average length of the human menstrual cycle is:
A14 days (single phase)
B21 days (3 weeks)
C28 days (4 weeks)
D35 days (5 weeks)
Answer & Solution
Correct answer: C. 28 days (4 weeks)
The average menstrual cycle = 28 days, divided into menstrual (1-5), follicular (6-13), ovulation (~day 14), luteal (15-28).
Individual variation is normal (21-35 days).
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