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Testes are located outside the body cavi...

Testes are located outside the body cavity.

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(1) During early foetal life, the testes develop in the lumbar region of the abdominal cavity just below the kidney but during seventh month of development, they descend permanently into the respective scrotal sacs through a passage called inguinal canal.
(2) For the development of the sperm, lesser temperature than the body temperature is required.
(3) If the testes remain in the abdominal cavity then the sperm production does not take place.
(4) This may result in impotency. Therefore, testes are located outside the body cavity.
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ive reasons for the following: (a) The human testes are located outside the abdominal cavity. (b) Some organisms like honey-bees are called parthenogenetic animals.

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Knowledge Check

  • Testes are located outside the abdominal cavity and suspended in a pouch known as _______________ .

    A
    Sperm duct
    B
    Vulva
    C
    Penis
    D
    Scrotum

  • In man why testes are located outside the abdominal cavity in scrotum ?

    A
    For security reasons
    B
    Because sperms formation needs lower temperature than normal body temperature.
    C
    For proper delivery of sperms to the female vaginal tract during copulation
    D
    None of the above.

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    (a) what is puberty? (b) describe in brief the functions of the following parts in the human male reproductive system: (i) Testes (ii) Seminal vesicle (iii) Vas deferens (iv) Urethra (c) Why are testes located outside the abdominal cavity? (d) State how sperms move towards the female germ cell.

    What are the functions of testis in the human male reproductive system? Why are these located outside the abdominal cavity? Who is responsible for bringing about changes in appearance seen in boys at the time of puberty?

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