White pulp
You don't need to be Editor-In-Chief to add or edit content to WikiDoc. You can begin to add to or edit text on this WikiDoc page by clicking on the edit button at the top of this page. Next enter or edit the information that you would like to appear here. Once you are done editing, scroll down and click the Save page button at the bottom of the page.
| White pulp | |
|---|---|
 | |
| Transverse section of a portion of the spleen. (Lymphatic nodule labeled at center right.) | |
 | |
| Spleen | |
| Latin | noduli lymphoidei splenici |
| Gray's | subject #278 1285 |
| Artery | trabecular artery |
| Vein | trabecular vein |
| Precursor | mesoderm |
| Dorlands/Elsevier | n_09/12576042 |
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 hyperplasiae 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.
See also
External links
- Histology at BU 07703loa
- White+pulp at eMedicine Dictionary
- Swiss embryology (from UL, UB, and UF) qblood/lymphat06
- Anatomy Atlases - Microscopic Anatomy, plate 09.174 - "Spleen: White Pulp splenic nodule"
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
Immune system: Lymphatic system (Lymph, Lymphocytes) | |
|---|---|
| Primary | Bone marrow – Thymus (Hassall's corpuscles) |
| Secondary: Spleen (process blood) | Hilum – Trabeculae
Red pulp (Cords of Billroth, Marginal zone) White pulp (Periarteriolar lymphoid sheaths, Germinal center) Trabecular arteries – Trabecular veins |
| Secondary: Lymph nodes (process extracellular fluid) | Afferent lymph vessels - Cortical sinuses - Medullary sinuses - Efferent lymph vessels
T cells: High endothelial venules B cells: Primary follicle/Germinal center - Mantle zone - Marginal zone Lymph node capsule - Subcapsular sinus - Cortex - Paracortex - Medulla (Medullary cord) - Hilus Lymph node trabeculae |
| Secondary: MALT (process mucosa) | GALT – Peyer's patches – Germinal center |
