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Lymphatic/ Immune System Rosa Reyes P.5 - Coggle Diagram
Lymphatic/ Immune System Rosa Reyes P.5
Major Functions of both
LYMPHATIC - Returns fluids from blood vessels back to blood. The organs provide structural basis of immune system by housing phagocyte cells and lymphocytes
IMMUNE - fights to protect the body of foreign substances and bacteria. It's a resistance to disease through the innate and adaptive defense systems.
Location of lymphatic organs and functions
Purpose of 1st, 2nd, 3rd Line of Defense
1st line of defense is a physical barrier to most microorganisms, keratin is resistant to weak acids/ bases, bacterial enzymes and toxins. The mucous also provides mechanical barrier
2nd line of defense is necessary if and when microorganisms invade deeper tissues. Many 2nd line cells have pattern recognition receptors
3rd Line of defense attacks certain foreign substances
Innate immune Defenses
Has a first and second line of defense. These defenses on the surface include the skin and mucous membranes. The internal defenses include phagocytes, natural killer cells, inflammation, antimicrobial proteins and a fever.
Adaptive immune Defenses
This system eliminates almost any pathogen/ abnormal cell in body. It's specific (recognizes and targets antigen), its systemic (not restricted to initial site) and memorizes (mounts on even stronger attack to "known" antigen.... Has humeral and cellular immunity
Humoral response
When B cells encounter target antigen. Antibodies are specific for particular antigen are then produced
Cellular Response
T cells provide defense against intracellular antigens
Antigens/ Antibodies
ANTIGENS - These mobilize adaptive defenses and provoke an immune response, it targets all adaptive immune responses. Some antigens include self-antigens (MHC proteins), antigen presenting cells (B and T cells, and lymphocytes)
ANTIBODIES - These are protein secreted by plasma cells and capable of binding specifically with antigen detected by B cells. These include the lgM, lgD,lgG, lgE cells
Artificial vs. Naturally acquired immunity
1... Naturally acquired (Formed in responses to actual bacteria. 2....Artificially acquired (Formed in responses to vaccine)
Passive vs. Active immunity
ACTIVE : Occurs when B cells encounter antigens and produce specific antibodies against them. 1... Naturally acquired (Formed in responses to actual bacteria. 2....Artificially acquired (Formed in responses to vaccine)
Occurs when ready made antibodies are introduced into body. 1... Naturally acquired. 2...Artificially acquired
Cells involved in immune system/ functions
Phagocytes (digest foreign invaders), NKC ( attack cells that lack "self" cell-surface receptors), B and T cells ( doesn't respond to specific antigens and play essential auxiliary roles in immunity.) Macrophages (Trigger's inflammatory response and recruit defenses) Dendrite cells ( acts as mobile essentials of boundary tissues.
Disorders of immune system
Tuberculosis Bacilli - resist digestion by macrophages and remain alive inside. It can form a tumor like growth and the bacteria may remain inactive forever. If personas immune decreases, it can break free and become activated and cause a disease.