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White pulp

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Title: White pulp  
Author: World Heritage Encyclopedia
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Subject: Spleen, Trabecular arteries, Outline of immunology, Periarteriolar lymphoid sheaths, Red pulp
Collection: Spleen (Anatomy)
Publisher: World Heritage Encyclopedia

White pulp

White pulp
Transverse section of a portion of the spleen. (Lymphatic nodule labeled at center right.)
Latin noduli lymphoidei splenici
Precursor mesoderm
trabecular artery
trabecular vein
Anatomical terminology

White pulp is a histological region of the spleen. The altered coat of the arterioles, consisting of adenoid tissue, presents here and there thickenings of a spheroidal shape, the white pulp (Malpighian bodies of the spleen, splenic lymphoid nodules).

These bodies vary in size from about 0.25 mm. to 1 mm. in diameter.

They are merely local expansions or hyperplasia of the adenoid tissue, of which the external coat of the smaller arteries of the spleen is formed.

They are most frequently found surrounding the arteriole, which thus seems to tunnel them, but occasionally they grow from one side of the vessel only, and present the appearance of a sessile bud growing from the arterial wall.

There are several parts of white pulp with distinct functions:

See also


This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

  1. ^ Le, Tao (2011). First aid to usmle step 1 2011. p. 201. 

External links

  • Histology image: 07703loa – Histology Learning System at Boston University
  • Swiss embryology (from UL, UB, and UF) qblood/lymphat06
  • Anatomy Atlases - Microscopic Anatomy, plate 09.174 - "Spleen: White Pulp splenic nodule"

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