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Spleen Anatomy


Anatomy Of Spleen

  • It is a lymphatic organ present in the left hypchondrium of abdominal cavity.
  • It has upper and lower borders, anterior and posterior ends, visceral and diaphragmatic surfaces.
  • The upper border will show one or tow notches the anterior end is broad, posterior end is narrow.
  • The diaphragmatic surface smooth and convex. It is in contact with the diaphragm.
  • The visceral surface shows a depression called as hilum which gives passage to spleenic artery, vein and nerves.
  • This surface is contact with other abdominal visceral and show the following impression.
  • Gastric impression forded by the stomach.
  • Renal impression formed by the left kidney.
  • Cholic impression formed by the colon.
  • Pancreatic impression formed by the tail of pancreas.
  • Arterial supply : Spleenic artery.
  • Nerve supply : Venous Drainage, Spleenic Vein.

Applied Anatomy :

  • Enlargement of spleen is called as spleenomegoly.
  • The most common causes of this are malarial and liver cirrhosis.

Microscopic Structure of Spleen

  • It is covered by a capsule which sends trabaculae into the inferior of the organ.
  • The substance of the spleen is called splenic pulp.
  • It is divided into 2 pars :
            1. White pulp.
            2. Red pulp.
  • The white pulp is also called as malpigian body. It is composed of round mass of lymphatic tissue with a peripherally placed arteriole.
  • The red pulp is composed of cords of lymphatic tissue called as cords of billroth.
  • In between these cords venous sinuses filled with blood are present.

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