BIOL 221 Lecture Notes - Lecture 3: White Pulp, Splenectomy, Splenomegaly
1 Mar 2020
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Document Summary
The capsule of the spleen is somewhat delicate and difficult to suture back together should it rupture. Blood vessels enter and leave and lymphatics leave through the hilum. White pulp is predominated by leukocytes and surrounds the arteries. It appears darker in stained slides because the leukocytes take up the stain. White pulp is important to protection against disease. It is found around veins and is important to erythrocyte recycling. Lymphoma is cancer of the lymphatic system in which b or t cells. Hodgkin"s disease is characterized by the presence of a specific type multiply beyond normal levels. of abnormal b cell not seen in non hodgkin"s lymphoma. Splenomegaly is an abnormal enlargement of the spleen that often develops as the result of a problem in a different organ (e. g. , liver disease) or infection. Splenectomy is removal of a damaged or enlarged spleen. Hormones (thymosin and thymopoietin) stimulate t cell lymphocyte division and differentiation.
