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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