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Human Reproduction Test - 59

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Human Reproduction Test - 59
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Sertoli cells are called the nurse cells because of.
  • Question 2
    1 / -0
    The diameter of seminiferous tubule is?
  • Question 3
    1 / -0
    Vasa efferentia possess
    Solution
    The testis is the primary sex organ whose function is to produce sperms. However, only 60% sperms produced by the testis are normal. The rest 40% are abnormal with impaired shape and motility. So, the vasa efferentia has ciliated epithelium to prevent these abnormal sperms from moving into the ejaculate.
    So the correct answer is C.
  • Question 4
    1 / -0
    Epididymis is
    Solution
    The testis is the primary sex organ in males. Each testis has 250 testicular lobules. Each lobule has 1-3 highly coiled seminiferous tubules. These seminiferous tubules open into the vasa efferentia through rete testis. The vasa efferentia opens into the epididymis which is highly convoluted and has 3 parts- caput, corpus and cauda epididymis. The cauda epididymis continues to form the vas deferens. Vas deferens transfers the sperms mixed with semen to the ejaculatory duct.
    So the correct answer is C.
  • Question 5
    1 / -0
    Vasa efferentia connect the
    Solution
    The testis is the primary sex organ in males. Each testis has 250 testicular lobules. Each lobule has 1-3 highly coiled seminiferous tubules. These seminiferous tubules open into the vasa efferentia through rete testis. The vasa efferentia opens into the epididymis which continues to form the vas deferens. 
    Vas deferens transfers the sperms mixed with semen to the ejaculatory duct. So vasa efferentia is the connecting link between testis and epididymis.
    So the correct answer is A.
  • Question 6
    1 / -0
    Development of foetus takes place in
    Solution
    The female reproductive system consists of a pair of ovaries, a pair of oviducts, uterus, cervix and the vagina.
    The ovaries are responsible for the formation of the female gamete ovum and secretion of hormones. Oviducts are responsible for the transfer of ovum and fertilization. Uterus/Womb is the place is the place where the development of the fetus occurs. So the correct answer is B.
    The uterus opens into the vagina through a narrow cavity called cervix. They together constitute the birth canal.
  • Question 7
    1 / -0
    Glands of male reproductive system are
    Solution

    Correct Option: D

    Explanation: 

    • The role of the testes is to produce sperms and the glands that are present are known as accessory glands.
    • These include:

    Seminal vesicles- contributing 60 – 70% of semen production,

    Prostate gland- contributing 30 – 35% of semen production, and

    Cowper’s gland- acts as a lubricant.

    Hence, glands of male reproductive system are prostate, cowpers and seminals.

  • Question 8
    1 / -0
    Formation of primary spermatocyte/oocyte from a spermatogonium/oogonium requires
    Solution
    In testis, the immature male germ cells, spermatogonia produce sperms by a process called spermatogenesis that begins at puberty. It occurs in four stages. During the first step of spermatogenesis, i.e. spermatocytogenesis, the spermatogonia present on the inside wall of the seminiferous tubules multiply by mitotic division and increase in numbers. Each spermatogonia is diploid containing 46 chromosomes. When spermatogonia accumulates large amount of nutrient and chromatin material and increases in size, it is known as primary spermatocytes. It periodically undergo meiosis and others remain as spermatogonia cells. Formation of primary spermatocyte/oocyte from a spermatogonium/oogonium requires growth.
  • Question 9
    1 / -0
    Meiosis occurs in
    Solution
    A primary spermatocyte is diploid, (2n) with 44 + XY (total 46) chromosomes. It completes the first meiotic division (reduction division) leading to the formation of two equal, haploid cells called secondary spermatocytes, which have only 23 chromosomes each i.e. 22 + X or 22 + Y.
    The secondary spermatocytes undergo the second meiotic division to produce four equal, haploid spermatids. The number of chromosomes in each spermatid is 23.
    So, meiosis occurs in both primary spermatocytes as well as secondary spermatocytes.
  • Question 10
    1 / -0
    Seminiferous tubules open into
    Solution
    The testis is the primary sex organ in males. Each testis has 250 testicular lobules. Each lobule has 1-3 highly coiled seminiferous tubules. These seminiferous tubules open into the vasa efferentia through rete testis. The vasa efferentia opens into the epididymis which continues to form the vas deferens. 
    Vas deferens transfers the sperms mixed with semen to the ejaculatory duct.
    So the correct answer is D.
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