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प्रश्न
Why are testes located outside the abdominal cavity? What is responsible for bringing about changes in appearance seen in boys at the time of puberty?
उत्तर
Testes are located outside the abdominal cavity, within a pouch called the scrotum. For the production of sperms, testes require a temperature that is 2–2.5 °C lower than the temperature of the rest of the body. That is why testes are protected inside the scrotum. The hormone testosterone is responsible for the development of secondary sex characteristics in boys.
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संबंधित प्रश्न
fertilisation in humans can occur only once in a month. Why?
The diagram shows female reproductive system. Name the parts labelled A to D.
(a) In which part do the sperms enter?
(b) Which part releases the egg?
(c) In which part does fertilisation take place?
(d) In which part does the foetus develop?
Which structure in human female is equivalent to the vas deferens in the male?and in what respect the structures are equivalent?
How long does a human baby take to develop before birth?
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
During adolescence, several changes occur in the human body. Mark one change from the following associated with sexual maturation in boys.
The normal gestation period in humans is:
Describe in brief the role of testis in human male reproductive system.
Name the following:
Two accessory glands in the male reproductive system.
Cryptorchidism is a condition where ______.
