Lecture 17 Flashcards
What are the 2 types of immune systems?
Innate - immediate and nonspecific
Adaptive - requires time to develop to the specificity of immunity (needs to be exposed)
How do innate defenses resist foreign matter?
Physically - skin and mucous
Mechanical - tears, sweat, mucus, coughing,
Chemical - stomach acid, how we respond to sickness
Flora - breaks down dangerous microorganisms
Phagocytes - attract to infection site and eat or destroy invaders
Inflammation - release histamine to vasodilation to rush WBC and heat from blood rush and kills by temp
Fever - prostaglandins release from hypo to increase temp to kill
Natural killer cells - kills all abnormal cells B and T-cells
Antigen vs. Antibody
Antigen - protein recognizes a foreign and attaches specific binding components. Made on any molecule
Antibody - plasma protein (gamma glo) matches to antigen binding site to highlight target invaders for lymphocytes
What is phagocytic?
An immune response that macrophages ingest invaders and display antigen on surface
What do T helper cells do?
An immune response that bind to antigens and remembers the invader and can fight it faster with antibodies
What do cytotoxic T cells do?
Destruct infected cells and destroyed by phagocyte
What is humoral immunity?
B cells produce plasma cells and long memory cells and allow for quicker response
What are the humoral immunity active or passive/ natural or artificial responses?
Active natural - B cells T cells antibodies from exposure
Passive natural - transfer from mother across placenta
Artificial active - antigens introduced in vaccines
Artificial passive - intravenous injection of immunoglobulins
