Ducts of the Testes, Epididymis Anatomy, Vas deferens Functions, Male Reproductive System Notes MCQ for NEET, GPAT, NORCET Exams
STUDY NOTES
1. 
Ducts of the Testes
The ducts of the testes are responsible for the transport of sperm from the seminiferous tubules to the epididymis.
Components:
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Seminiferous tubules: Site of spermatogenesis (sperm production).
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Straight tubules (Tubuli recti): Carry sperm from seminiferous tubules to rete testis.
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Rete testis: A network of interconnected tubules in the mediastinum testis.
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Efferent ductules: 10–20 small ducts that connect rete testis to the epididymis.
2. Epididymis Anatomy
The epididymis is a long, coiled tube attached to the posterior surface of each testis, where sperm mature and are stored.
Parts:
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Head (Caput): Receives sperm from efferent ductules.
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Body (Corpus): Site of further sperm maturation.
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Tail (Cauda): Stores mature sperm; connected to vas deferens.
Functions:
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Sperm maturation
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Storage of sperm
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Absorption of testicular fluid
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Secretion of factors for sperm viability and motility
3. Vas Deferens (Ductus Deferens)
A muscular tube (~45 cm) that carries sperm from the epididymis to the ejaculatory duct.
Functions:
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Transport of sperm via peristaltic contractions during ejaculation.
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Acts as a storage site for sperm.
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Part of the spermatic cord, travels through the inguinal canal.
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Joins with the duct of the seminal vesicle to form the ejaculatory duct.
MCQs: Ducts, Epididymis, Vas Deferens
1. Which structure connects the rete testis to the head of the epididymis?
A. Straight tubules
B. Efferent ductules
C. Vas deferens
D. Seminiferous tubules Answer: B. Efferent ductules
2. The main function of the epididymis is:
A. Testosterone secretion
B. Spermatid formation
C. Sperm maturation and storage
D. Fertilization of egg Answer: C. Sperm maturation and storage
3. Which part of the male reproductive tract is responsible for carrying sperm into the ejaculatory duct?
A. Epididymis
B. Vas deferens
C. Urethra
D. Rete testis Answer: B. Vas deferens
4. Where does spermatogenesis primarily occur?
A. Epididymis
B. Seminiferous tubules
C. Rete testis
D. Vas deferens Answer: B. Seminiferous tubules
5. The tail of the epididymis is mainly responsible for:
A. Sperm production
B. Secretion of testosterone
C. Sperm storage
D. Absorption of sperm Answer: C. Sperm storage