What kind of pulp does the spleen contain?

What kind of pulp does the spleen contain?

The spleen contains two main types of tissue – white pulp and red pulp. White pulp is material which is part of the immune system (lymphatic tissue) mainly made up of white blood cells. Red pulp is made up of blood-filled cavities (venous sinuses) and splenic cords.

What kind of lymphocytes are in the spleen?

The spleen also helps get rid of germs. It contains white blood cells called lymphocytes and macrophages. These cells work to attack and destroy germs and remove them from the blood that passes through the spleen.

Does the white pulp of the spleen contain lymphocytes?

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.

What does red pulp of spleen consist of?

The red pulp is mainly filled with venous sinuses, which contain red blood cells and occasionally white blood cells. The sinuses are lined by elongated, rod-shaped endothelial cells.

Are lymphocytes made in the spleen?

The spleen, along with the liver, removes old and damaged erythrocytes from the circulating blood. Like other lymphatic tissue, it produces lymphocytes, especially in response to invading pathogens. The sinuses in the spleen are a reservoir for blood.

Are lymphocytes in red pulp?

Red pulp is a loose spongy tissue with chords of reticular cells located between venous sinuses that contains lymphocytes, macrophages, granulocytes, and plasma cells.

Where are lymphocytes found in the spleen?

The white pulp of the spleen contains typical lymphoid elements, such as plasma cells, lymphocytes, and lymphatic nodules, called follicles in the spleen. Germinal centres in the white pulp serve as the sites of lymphocyte production.

Which splenic tissue contains mainly leukocytes?

The spleen consists of two types of tissue: red pulp and white pulp. White pulp is lymphatic tissue that mainly consists of lymphocytes called B-lymphocytes and T-lymphocytes that surround arteries.

Where is the white pulp in the spleen?

The white pulp is organized as lymphoid sheaths around the arterial branches of the spleen and closely resembles the structure of a lymph node, with distinct T cell and B cell compartments.

Does the red pulp contain lymphocytes?

Unlike white pulp, which mainly contains lymphocytes such as T cells, red pulp is made up of several different types of blood cells, including platelets, granulocytes, red blood cells, and plasma. …

How do lymphocytes enter the spleen?

While antigen can reach lymph nodes via afferent lymphatics, either taken up by dendritic cells or by drainage in lymph fluid, lymphocytes enter this organ via the specialized high endothelial venules (HEV).

What is white pulp in the spleen?

White pulp is the name given to the splenic regions containing the splenic arterioles with their periarteriolar lymphoid tissue sheaths, the follicles, and the marginal zone.

What are the tissues in the spleen called?

The spleen is the largest lymphatic organ in the body. Surrounded by a connective tissue capsule, which extends inward to divide the organ into lobules, the spleen consists of two types of tissue called white pulp and red pulp. The white pulp is lymphatic tissue consisting mainly of lymphocytes around arteries.

What makes up the white pulp of the spleen?

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. Blood enters the spleen through the splenic artery, moves through the sinuses where it is filtered, then leaves through the splenic vein.

Which is larger the lymph node or the spleen?

Spleen. It is similar to a lymph node in shape and structure but it is much larger. The spleen is the largest lymphatic organ in the body. Surrounded by a connective tissue capsule, which extends inward to divide the organ into lobules, the spleen consists of two types of tissue called white pulp and red pulp.

How are lymphocytes produced in the spleen and liver?

Lymphocytes in the spleen react to pathogens in the blood and attempt to destroy them. Macrophages then engulf the resulting debris, the damaged cells, and the other large particles. The spleen, along with the liver, removes old and damaged erythrocytes from the circulating blood. Like other lymphatic tissue, it produces lymphocytes,…

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