alleryThe menstrual phase normally lasts approximately:
A3–5 days
B14 days
C10 days
D1 day
Answer & Solution
Correct answer: A. 3–5 days
The menstrual phase (menstrual flow) lasts about **3–5 days**, during which the endometrial lining and its blood vessels break down and are expelled through the vagina.
Keep practising Unit 8O: Population Growth & Carrying Capacity
Browse all Unit 8O: Population Growth & Carrying Capacity questions for AP Biology, or explore more Biology topics.
Related questions
Oral contraceptive pills are typically taken for how many days followed by what gap?IUDs are particularly suitable for women who wish to:Which of the following is a hormone-releasing IUD?Diaphragms, cervical caps and vaults work by:'Nirodh' is a popular brand of which contraceptive in India?Withdrawal or coitus interruptus prevents conception by:Lactational amenorrhea as a contraceptive method is effective only up to a maximum period In the periodic-abstinence method, couples avoid coitus between which days of the menstrua