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Male Sex Accessory Ducts MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

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  • Male Sex Accessory Ducts is considered one of the most asked concept.

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Vasa efferentia are the ductules leading from

The shared terminal duct of the reproductive and urinary system In the human male is:

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Male Sex Accessory Ducts
  • Rete testis, vasa efferentia, epididymis and vasa deferentia are called the male sex accessory ducts.

Rete testis:

  • The seminiferous tubules are closed at one end and are connected to the network of rete testis on the open end. 
  • Rete testis is a convoluted labyrinth of cuboidal epithelium.

Vasa efferentia:

  • Rete testes gives rise to 10-20 ductules called vasa efferentia or ductuli efferentes.
  • They are lined by pseudostratified epithelium which helps in sperm movement.
  • Vasa efferentia enters the head of the epididymis.

Epididymis:

  • It is a 6m long closely coiled tubule present along the inner side of each testis.
  • It is divided into three parts:
    • Upper head or caput epididymis or Globus major — This part is wide and receives vasa efferentia.
    • Corpus epididymis or Globus minor or body – It stores sperms for a short duration, which undergoes maturation. It lies in the lateral side of testes.
    • Cauda epididymis or Globus minor or tail –  Before entering the vas deferens the spermatozoa are stored here. This part lies on the caudal side of the testes and is wide.

Vas deferens and Ejaculatory Duct:

  • This is also called as seminal duct. 
  • It is around 30 cm long, narrow, muscular and tubular structure which starts from the tail of the epididymis, passes through the inguinal canal, and then over the urinary bladder.
  • It then joins the duct of the seminal vesicle to form a 2 cm long ejaculatory duct. 
  • Vas deferens carries sperm.
     

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Male Sex Accessory Ducts

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Male Sex Accessory Ducts

Biology Textbook for Class XII

Page No. : 43

Line : 37

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