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प्रश्न
Explain the term Parturition or birth.
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उत्तर
Parturition or birth: It is the expelling of the fetus from the body of the mother and it begins by the contraction of the uterine walls resulting in labour pains.
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संबंधित प्रश्न
Name the human male reproductive organ that produces sperms and also secretes a hormone. Write the functions of the secreted hormone.
Describe the function of placenta.
Differentiate between Sperm duct and fallopian rube (function)
What is meant by implantation?
Fertilisation results immediately in the formation of :
(a) a zygote
(b) an embryo
(c) a placenta
(d) a foetus
When a female child is born, her ovaries already contain thousands of immature eggs (or ova) contained in immature structures A. On maturing, A bursts open and an egg shoots out of the ovary in a process called B. The process B starts in the females at puberty and occurs again and again after a time period x. Before every occurrence of process B, the inner lining of uterus becomes thick and soft with lots of blood vessels in it. When the egg cell gets fertilised by a sperm, then an event C occurs in the life of mature human female which lasts for time period y leading to the birth of baby. If, however, the egg cell released by the ovary does not get a sperm to fuse with, then the thick and soft inner lining of uterus breaks down and comes out of the female's body in an event called D. The occurrence of event D is controlled by chemical substances E.
(a) What are A?
(b) What is process B?
(c) What is the time period x?
(d) Name the event C.
(e) How much is the time period y?
(f) What is the name of process D?
(g) Name the chemical substances E.
State the Location:
Uterus
Choose the Odd One Out:
The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for ______.
