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Immune System Period 2 - Coggle Diagram
Immune System Period 2
Major functions of the Lymphatic & Immune systems
Lymphatic System
Lymphatic vessels transport excess fluid back to the blood
Second Circulatory System
Lymph nodes defend body against disease
collect and carry away excess tissue fluid
Lymphatic vessels
Walls thinner than those of veins but have same 3 layer
Flap like vessels on the inside
Pathway
Lymphatic Capillary->Afferent lymphatic vessel->Lymph Node->Efferent Lymphatic Vessel->Lymphatic Trunk->Collecting Duct->Subclavian Vein
Encapsulated Lymphatic Organs
• Lymph nodes
• Thymus
• Spleen
Immune System
Location of Lymphatic organs and their functions
Purpose and examples of First, Second and Third line of defense
Innate immune defenses and Adaptive immune defenses
Innate Immune Defense
Responds quickly
mechanical barriers
Hair, Mucus, and Sweat
Prevent the entry of certain pathogens
^First line of defense^
natural killer cells
inflammation
-tissue response to injury or infection
Major Events
Dilation of blood vessels, to increase of blood volume
Increased capillary permeability, leads to edema and heat
Attraction of white blood cells into the affected area, for phagocytosis
Blood clotting & fibrin thread formation
inhibits spread of infection
phagocytes
fever
Occurs when body temperature is re-set to a higher set point
Results in elevated body temperature
provides a hostile environment for pathogens
causes the liver and spleen to take on iron
Phagocytic cells attack with greater vigor
^SECOND LINE OF DEFENSE^
Chemical Barriers
Adaptive immune defenses
Respond more slowly
Respond against only a specific type of pathogen
Humoral response and cellular response
Antigens and antibodies
Artificial vs. Naturally acquired immunity
Passive vs. Active immunity
Disorders associated with the Immune system
Cells involved in the immune system and their functions