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(a) Draw a sectional view of human femal...

(a) Draw a sectional view of human female reproductive system and label the part where
(i) eggs develop.
(ii) fertilization take place.
(iii) fertilized egg gets implanted.
(b) Describe, in brief, the changes the uterus undergoes
(i) to receive the zygote.
(ii) if zygote is not formed.

Text Solution

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(a) The human female reproductive system consists of a pair of ovaries, a pair of oviducts, the uterus and the vagina.

(i) The development of egg occurs in the ovary.
(ii) Fertilisation takes place in the fallopian tubes.
(iii) The fertilised egg gets implanted in the uterus.
(b) (i) The uterus prepares itself every month to receive a fertilized egg/zygote. The inner uterus lining (endometrium) becomes thick and is supplied with blood to nourish the embryo.
(ii) If the egg is not fertilised, then the uterus lining is not required. Hence, it breaks down and gets released in the form of blood and mucous through the vagina. This process lasts for 2-8 days. This cycle occurs every month and is known as menstruation.
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