LC BIOLOGY- The Lymphatic System

What are 2 features of Lymphatic System?

• one way system

• secondary transport system

What are the functions of Lymphatic System?

• returns tissue fluid to the blood

• defends the body against infection

• transports fat

What are Lymph Nodes and what are their functions?

• swellings in the lymph vessels

• filter bacteria

• store lymphocytes (white blood cells), some of these kill microorganisms and others produce antibodies

What is Tissue Fluid, and what is Tissue Fluid’s function?

• plasma without red blood cells, platelets or large proteins

• surrounds all body cells and helps transport materials in and out of cells

What are the two ways Tissue Fluid Returns to the Plasma?

• most enter through blood capillaries

• some enter through dead-ending lymph vessels, where it is called lymph

What is Lymph?

• tissue fluid

• contains white blood cells, proteins and fats

How does Lymph Moves in Lymph Vessels?

• muscles in the vessel walls

• general body movement

Valves

control the direction of lymph flow

What is the fuction of the Subclavian Vein and where is the Subclavian Vein located?

lymph returns to the blood through this vein, located near the collar bones