THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -White pulp contains lymphoid aggregations, mostly lymphocytes, and macrophages which are arranged around the arteries. The lymphocytes are both T (mainly T-helper) and B-cells. Red pulp is vascular, and has parencyhma and lots of vascular sinuses.

Detailed explanation-2: -The white pulp is lymphatic tissue consisting mainly of lymphocytes around arteries. The red pulp consists of venous sinuses filled with blood and cords of lymphatic cells, such as lymphocytes and macrophages.

Detailed explanation-3: -White pulp is a histological designation for regions of the spleen (named because it appears whiter than the surrounding red pulp on gross section), that encompasses approximately 25% of splenic tissue. White pulp consists entirely of lymphoid tissue. Transverse section of a portion of the spleen.

Detailed explanation-4: -The white pulp of the spleen is lymphoid tissue consisting of lymphocytes, macrophages and other free cells lying in a reticular meshwork and surrounding arterial vessels to form the PALS (Figure 2).