I. Lymphatic vessels
A. Vessels that carry lymph from tissues to the bloodstream
B. Thin-walled vessels with valves to prevent backflow of lymph
C. Lymphatic capillaries collect lymph from interstitial fluid
II. Lymph nodes
A. Small, bean-shaped structures that filter lymph
B. Contain immune cells that help fight infection
C. Lymph nodes are found throughout the body, often in clusters
III. Lymphatic organs
A. Spleen
1. Largest lymphatic organ
2. Filters blood and produces immune cells
B. Thymus
1. Located in the chest
2. Produces T-cells for the immune system
C. Tonsils
1. Small organs in the back of the throat
2. Help protect against respiratory and gastrointestinal infections
IV. Lymphatic system functions
A. Drains excess fluid from tissues and returns it to the bloodstream
B. Transports fats and fat-soluble vitamins from the digestive system to the bloodstream
C. Helps defend against infections and diseases by filtering lymph and producing immune cells
Overall, the lymphatic system is a network of vessels, tissues, and organs that work together to drain lymph from tissues, filter it, and return it to the bloodstream. This process helps maintain fluid balance in the body, transports essential nutrients, and supports the immune system in fighting off infections and diseases.
Outline the functions and positions of the structural components.ie vessels, tissue and organs involved in draining of lymph into the blood.
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