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प्रश्न
Describe the structure of a seminiferous tubule.
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उत्तर
The production of sperm in the testes takes place in a highly coiled structure called the seminiferous tubules. These tubules are located in the testicular lobules. Each seminiferous tubule is lined by germinal epithelium. It is lined on its inner surface by two types of cells: spermatogonia and Sertoli cells. Spermatogonia are male germ cells that give rise to primary spermatocytes through meiotic divisions. Primary spermatocytes undergo further meiotic division to form secondary spermatocytes and finally, spermatids. Spermatids later metamorphose into male gametes called spermatozoa. Sertoli cells are known as nurse cells of the testes, as they provide nourishment to the germ cells. There are large polygonal cells known as interstitial cells or Leydig cells just adjacent to the seminiferous tubules. These cells secrete the male hormone called testosterone.
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संबंधित प्रश्न
Describe the human male reproductive system.
ACTH, TSH, ADH, FSH
Put a tick mark (✓) against the correct alternative in the following statement:
Identify the stage which is formed after the fertilisation of the egg by the sperm?
Multiple choice question. Tick (✓) the correct choice:
Testis are present in a sac called
- scrotum
- oviduct
- epididymis
- none of the above
Which one of the following is the correct route that a sperm follows when it leaves the testis of a mammal ?
Describe the functions of the following:
Oviduct
Draw a diagram of a mature human sperm. Label any three parts and write their functions.
Give the names.
Hormones related with the male reproductive system.
Explain the Term Penis.
Explain the term Gametogenesis.
Give Technical Term:
Name the male reproductive cells of mammals.
Name the secondary sex organs in males.
In the male reproductive system, the vasa efferentia opens into the ______.
In the male reproductive system, the vasa deferens joins the ____________.
Identify the approximate number of lobules present in the testis.
The ________ secrete testosterone after puberty.
Urethral meatus refers to the ______.
Vas deferens receives the duct of seminal vesicle and forms the ______.
Temperature of the scrotum which is necessary for the functioning of testis is always ______ around below body temperature.
In human males, the testes lie in the scrotum, because it helps in the ______
Cell at the end of first meiotic division male sperm differentiates into ______.
The path of sperm transport is given below. Provide the missing steps in blank boxes.
Describe the function of Bulbourethral glands.
Give significance of Leydig's cells.
In humans, sperm production occurs in the organ ______.
List two roles of the Testis in the human reproductive system.
Answer the following question based on the human male reproductive system:
What is the work of vas deferens?
Name the following:
Three accessory glands of human male reproductive system.
The thin-walled sac of skin in which testis descends is ______.
