White pulp
White Pulp
White pulp (pronunciation: /waɪt pʌlp/) is a component of the spleen that is involved in the immune response. The term "white pulp" is derived from its appearance, which is lighter in color than the surrounding red pulp due to its high concentration of lymphocytes.
Etymology
The term "white pulp" originates from the Latin words "albus", meaning white, and "pulpa", meaning pulp. This is in reference to the tissue's light color compared to the darker red pulp in the spleen.
Function
White pulp is primarily composed of lymphoid tissue, specifically B cells, T cells, and macrophages. These cells play a crucial role in the body's immune response, helping to identify and destroy pathogens. The white pulp is organized around central arterioles, forming structures known as periarteriolar lymphoid sheaths (PALS).
Related Terms
- Spleen: The organ in which white pulp is found.
- Red Pulp: The other main component of the spleen, which is involved in filtering the blood.
- Lymphocytes: A type of white blood cell that is abundant in the white pulp.
- B cells and T cells: The two main types of lymphocytes found in the white pulp.
- Macrophages: Cells that engulf and digest pathogens and cellular debris.
- Periarteriolar lymphoid sheaths (PALS): Structures in the white pulp that are organized around central arterioles.
External links
- Medical encyclopedia article on White pulp
- Wikipedia's article - White pulp
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