Question
Differentiate between,
Oestrus and menstrual cycles.
Oestrus and menstrual cycles.
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Menstrual cycles
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Oestrus cycles
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i.
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It occurs in primates (monkeys, apes and human beings) only.
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i.
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It occurs in non-primates such as cows, sheep, rats, deer, dogs, tiger,etc.
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ii.
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This cycle consists of menstrual phase, proliferative phase and the secretory phase.
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ii.
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It consists of a short period of oestrus or heat.
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iii.
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Blood flows in this cycle.
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iii.
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Blood goes into flow in this cycle.
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iv.
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The broken endometrium is passed out during menstruation.
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iv.
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The broken endometrium is reabsorbed.
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v.
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Sex urge is not increased during menstruation.
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v.
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Sex urge is increased during oestrus period.
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vi.
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Female does not permit copulation during menstrual phase of the cycle.
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vi.
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Female permits copulation only during oestrus period.
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