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प्रश्न
Give Reasons
At the time of birth, the testes descend into the scrotal sacs.
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उत्तर
In human beings (mammals) the temperature required for the production and survival of sperms is lower than that of the body temperature. Hence, to provide a suitable temperature of about 2 – 3°C lower than that of body temperature, the testes descend into the scrotal sec at the time of birth.
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संबंधित प्रश्न
Explain the process of birth in human beings.
List two example of each diseases caused due to (i) bacterial infection and (ii) viral infection. Which device or devices may be used to prevent the spread of such diseases.
State the changes that take place in the uterus when Implantation of embryo has occurred
What is the name of the narrow opening between the uterus and the vagina.
Describe the process of fertilisation in humans and development of embryo briefly.
Which among the following are not the functions of testes at puberty?
(i) formation of germ cells
(ii) secretion of testosterone
(iii) development of the placenta
(iv) secretion of estrogen
State whether the following statement is true or false:
Oviducts and fallopian tubes are one and the same thing.
Draw a diagram to display the vertical view of human female reproductive system and label the following parts in the diagram:
(1) Ureter
(2) Ovary
(3) Funnel of fallopian tube
(4) Urethra.
Name the following:
Organ where implantation takes place.
If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will NOT be transported form ______
