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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.
संबंधित प्रश्न
Write the function of the following part in a human female reproductive system:
Uterus
Which part of the human body produces ova?
Fill in the following blank with suitable word :
The menstrual cycle is controlled by.............
In a flower, the parts that produce male and female gametes are respectively :
(a) sepal and anther
(b) filament and stigma
(c) anther and ovary
(d) stamen and style
When a fertilised egg E formed in the oviduct of a human female divides repeatedly to form an embryo, the embryo gets implanted in the thick and soft lining of the uterus. After this a disc-like special tissue T develops between the uterus wall and embryo through which all the requirements of the developing embryo (and foetus) are met from the mother's body, The embryo is connected to the tissue T through a string like structure S.
(a) What is the other name of fertilised egg cell E?
(b) What is the name of tissue T?
(c) Name the string-like structure S.
(d) Name two substances which pass from mother's blood to embryo through tissue T and, one type of substance which passes from embryo to mother's blood.
(e) What happens to S when the baby is born? Why?
In humans, ______ chromosome is responsible for maleness.
Choose the correct answer:
First menstrual cycle is known as ___________
What are the signs of puberty in human males and females?
The following is the illustration of the sequence of ovarian events (a-i) in a human female.
Write the difference between C and H.
______ is a lytic enzyme released by the sperm.
