Lymphatic system-ppt
- 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