Question
Even though ovulation occurs regularly in a female, the uterus lining is shed during menstruation each month. What does this suggest about fertilisation?
The correct answer is
Fertilisation is not occurring
Menstruation Indicates Lack of Fertilisation
The shedding of the uterus lining, known as menstruation, occurs monthly. This process is a direct consequence of the absence of fertilisation.
Ovulation is the release of an egg from the ovary. While ovulation can occur regularly, it doesn't guarantee that fertilisation will happen.
- If an egg is fertilised by sperm, it implants in the uterus lining. The body then maintains the lining to support the developing embryo.
- If the egg is not fertilised, it disintegrates, and hormone levels drop. This hormonal change triggers the shedding of the uterus lining, resulting in menstruation.
Therefore, the regular occurrence of menstruation, even with regular ovulation, strongly suggests that fertilisation is not taking place each cycle.
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Important Questions from Anatomy and Physiology
- In human females, if the egg is not fertilised, the monthly shedding of the uterine lining is called which of the following?
- What happens in the female body if the egg is NOT fertilised?
- At what minimum distance should an object be held from the eyes for clear and comfortable viewing?
- Which of the following is the main function of skeletal muscles in a human body?
- Which type of connective tissue connects muscles to bones?
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