The document outlines the components and functions of the lymphatic system, which includes lymph fluid, lymphatic vessels, and lymph nodes. Key functions include returning tissue fluid to the bloodstream, transporting fats, and providing immune defense through various organs such as the spleen and thymus. It details the structure and function of lymph nodes, tonsils, the spleen, and the thymus gland in supporting the body's immune response.

2. LYMPHATIC
SYSTEM
By
Neeshma.s
Natural science

3. LYMPHATIC SYSTEM
COMPONENTS OF LYMPHATIC SYSTEM
•Lymph is the fluid.
•Lymph Vessels called lymphatic.
•Lymph nodes.
Functions of lymphatic system
•Return tissue fluid to the bloodstream.
•Transport fats from the digestive tract to the
bloodstream
•Surveillance & defence.

5. Originate as lymph capillaries.
Capillaries unite to form larger vessels.
Lymphatic Resemble veins in structure.
Lymphatic Connect to lymph nodes at various
intervals.
Lymphatic ultimately deliver lymph into 2 main
channels-
Right lymphatic duct
Thoracic duct
LYMPHATIC

7. Main Channels of Lymphatic

8. Oval structures located along lymphatic.
Enclosed by a fibrous capsule consist of outer
cortex and inner medulla.
LYMPH NODES

9. TONSILS
Multiple groups of large lymphatic nodules.
Location – mucous membrane of the oral and pharyngeal
cavities.
Palatine tonsils
•Posterior-lateral walls of the oropharynx
Pharyngeal tonsil
•Posterior wall of nasopharynx
Lingual tonsils
•Base of tongue

10. SPLEEN
 Largest lymphatic organ
 Located between the stomach & diaphragm.
 Structure is similar to a node.
 Functions of spleen
o Filters blood
o Stores blood

11. THYMUS GLAND
 Location of thymus gland– behind the sternum in the
mediastinum
 Development of thymus gland
o Infant – conspicuous
o Puberty – maximum size
o Maturity – decreases in size
 Function of thymus gland
o Differentiation and maturation of T cells

12. FUNCTION OF THE LYMPHATIC
SYSTEM
 Defense against harmful organisms and
chemicals.
 Immunity –it involves B cells that become
plasma cells which produce antibodies that
bind with specific antigens.
Cell-mediated immunity involves T cells
that directly destroy foreign cells