The Lymphatic System

Topics: Lymphatic system, Blood, Immune system Pages: 2 (501 words) Published: October 8, 1999
The Lymphatic System

The Lymphatic System is very important. It helps with the
Cardiovascular system, and our immune systems. The Lymphatic System is made up of two semi-independent parts. One is a network of lymphatic vessels. The other part is various lymphoid tissues and organs all over the body. The functions of the Lymphatic System transporting fluids that have escaped from the blood vascular system, and the organs house phagocytic cells and lymphocytes.

Lymphatic vessels are an elaborate system of drainage vessles that collect the excess protein-containing fluid and returns it to the bloodstream.. Once an interstitial fluid enters the lymphatics it is called lymph. The lymphatic vessels form a one way system in which lymph flows only towards the heart. This entire transport system

starts in the lymph capillaries. These are
very commmon, usually occur in the places blood capillaries occur. Lymph capillaries are not found in bone, teeth, bone marrow, and entire central nervous system. Lymphatic capillaries are very permeable. The endothelial cells that make up the walls of the capillaries are not tightly joined. Filament anchor the endothelium cells so they can expand. Pathogens can spread through the body through the lymphatic stream.

There are many cells in the lymphoid tissue. One type is lymphocytes, which are referred
to often as T or B cells. Plasma cells are antibody-producing offspring of B cells. Macrophages are phagocytes that help out with immunity. Reticular cells are cells that form the lymphoid tissue stroma. Thes cells are very important parts of the immune system.

The Lymphatic System also contains tissues. The tissue of the Lymphatic System is reticular connective tissue. It hold the macrophages and changes the number of lymphocytes. It is an important part of the immune system. The Lymphoid tissue can be found in the follicles. Lymphoid organs are discrete and encapsulated. The main lymphoid organs are the...
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