Chapter 28 The Lympathatic System. Learning Objectives To describe the structure of the lymphatic system to include lymph nodes and lymph vessels. 2. To describe three functions of the lymphatic system. Lymphatatic System is a second transport system in the body.
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Tissue fluid in the body and return it to the blood.:
2. What do lymph vessels do?
1. Tissue fluid is plasma without red blood cells, platelets or large proteins
Surrounds all body cells and helps transport materials in and out of cells
2. Lymph vessels collect the fluid that surrounds each cell in the body and return it to the blood
Lymph is made from tissue fluid in the body and return it to the blood.and contains white blood cells, proteins and fats.
Valves in lymph vessels control the direction of lymph flow.
Lymph returns to the blood in the subclavian veins (near the collar bones).
Formation of Lymph in the body and return it to the blood.
Lymph contains large amounts of white blood cells, proteins and fats.
Lymph Vessels in the body and return it to the blood.
Lymph vessels join together to form the thoracic duct on left of body and the right lymphatic duct at the right shoulder.
These ducts empty lymph into the bloodstream at the sub clavian veins near the collar bone of the shoulder
Lymph Nodes left of body and the right lymphatic duct at the right shoulder.
b) They mature and store large numbers of white blood cells (lymphocytes) which kill micro-organisms.
Functions of Lymphatic System
3. Defends the body against infection by filtering micro-organisms in lymph nodes, maturing and storing lymphoctyes
4. Absorbs and transports fats in the digestive system.