Lymphatic and Immune Systems Flashcards
What does the lymphatic system do?
- has lymphocytes to fight infection
- one way drainage system from body tissue to blood circulation
- gets rid of waste products produced by cells
What does the lymphatic system work with?
immune system
What are the organs of the lymphatic system?
- thymus
- spleen (largest organ)
- lymph nodules
- lymph nodes
- interstitial fluid (between cells)
- adenoids
- tonsils
What is the purpose of the immune system?
protects against pathogens
What are examples of pathogens?
- bacteria
- viruses
- fungi
- toxins
- parasites
- cancer
Define pathogens.
something that can cause disease
Where does lymph flow through?
lymphatic vessels, lymph capillaries, lymph nodes
What are lymph nodes?
small, glandular structures
Where are lymph nodes primarily located?
neck, axilla, groin
What is the function of lymph nodes?
produces and stores lymphocytes
What are lymph nodules?
masses of tissue that contain macrophages and lymphocytes
Where are lymph nodules?
spleen and tonsils
Where is the thymus?
located posterior to sternum
What is the function of thymus?
makes t-cells
- assists with production of lymphocytes for the immature immune system
What happens to thymus as we age?
atrophies (decreases in size)
- once immune system is functional, thymus is nonexistent
What is the spleen?
largest lymphatic organ in the upper left quadrant of abdominal cavity