1
Question
Read the given passage and answer the question below.
The reproductive cycle, in female primates, called the menstrual cycle, comprises 28 days in a healthy female. Primata is the order to which monkeys, apes and human beings belong. The duration of the menstrual cycle varies in different females as it is dependent upon a number of factors. However, the average duration amounts to around 28 days.
At which stage in the menstrual cycle does the proliferative phase occur?
[1 mark]
Read the given passage and answer the question below.
The reproductive cycle, in female primates, called the menstrual cycle, comprises 28 days in a healthy female. Primata is the order to which monkeys, apes and human beings belong. The duration of the menstrual cycle varies in different females as it is dependent upon a number of factors. However, the average duration amounts to around 28 days.
At which stage in the menstrual cycle does the proliferative phase occur?
[1 mark]
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Solution
The correct option is B Days 5 - 14
Proliferative phase or follicular phase is the phase which involves regeneration of uterine endometrium through proliferation, this takes place during days 5 - 14 of the menstrual cycle. Rapid secretion of LH leading to rupture of Graffian follicle and thereby release of secondary oocyte in this phase. Hence option b is correct.
Days 1 - 5 are the bleeding or menstrual phase or bleeding phase during which uterine endometrium is shed.
Days 15 - 28 are the secretory phase or luteal phase during which the corpus luteum is formed and the uterine lining continues to thicken.
During days 17 - 21, the level of progesterone remains high in the female body.
Proliferative phase or follicular phase is the phase which involves regeneration of uterine endometrium through proliferation, this takes place during days 5 - 14 of the menstrual cycle. Rapid secretion of LH leading to rupture of Graffian follicle and thereby release of secondary oocyte in this phase. Hence option b is correct.
Days 1 - 5 are the bleeding or menstrual phase or bleeding phase during which uterine endometrium is shed.
Days 15 - 28 are the secretory phase or luteal phase during which the corpus luteum is formed and the uterine lining continues to thicken.
During days 17 - 21, the level of progesterone remains high in the female body.
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