Anatomy study note · Abdomen

Epididymis

A firm, highly coiled duct about 6 m long lying behind the testis, where spermatozoa are stored and mature.

Key points

• Behind the testis: head, body, tail.
• ~6 m coiled duct; stores and matures sperm.
• Tail → vas deferens.
• From the mesonephric duct.
• Epididymis: mesonephric duct; vasa efferentia: mesonephric tubules.
• Pseudostratified epithelium with stereocilia.
• Absorbs ~90% of testicular fluid.

The full note in the atlas also covers

Features · Blood supply · Lymph drainage · Histology · Development

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 6, PDF pp. 738–739, 742–743
• Inderbir Singh’s Human Embryology, ch. 16, PDF pp. 302–303, 307
• BRS Cell Biology & Histology, 7th ed., ch. 20, PDF pp. 368–370

More from the abdomen

• External oblique
• Gallbladder
• Iliac arteries
• Iliacus
• Iliohypogastric and ilioinguinal nerves
• Inferior epigastric vessels
• Inferior mesenteric artery
• Inferior vena cava
• Inguinal ligament
• Internal oblique
• Jejunum and ileum
• Kidney

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