ch17 Flashcards
What is a “pathogen”?
disease causing microorganism
What is an “antigen
a marker on the surface of a foreign substance that immune system cells recognize as nonself
a foreign antigen’s presence in the body triggers the immune response
What is an “antibody”?
a specialized protein, produced by white blood cells that can recognize and neutralize specific response
What is a “systemic infection
an infection spread by the blood or lymphatic system to larger portions of the body
What is the “chain of infection
pathogen receiver portal of exit means of transmission portal of entry new host
Effects of a histamine release in the body?
Dilation of blood vessels, heat, redness, and swelling
What is an “autoimmune disease”?
when your immune system, which defends your body against disease, decides your healthy cells are foreign. As a result, your immune system attacks healthy body cells. Depending on the type, an autoimmune disease can affect one or many different types of body tissue.
What is a “cell mediated immune response”?
an immune response that does not involve antibodies, but rather involves the activation of phagocytes, antigen-specific cytotoxic T-lymphocytes, and the release of various cytokines in response to an antigen.
Plases of the immune response
Phase 1 – Dendritic cells are drawn to the site Phase 2 – Helper T cells multiply Production of Killer T and B cells Cytokines – chemical messengers Phase 3 – Killer T cells strike Cell-mediated immune Antibody-mediated immune response Phase 4 – Last Phase Suppressor T-cells Slow down activity
What is the function of “immunization”?
The process of ‘priming’ the body to remember an encounter with a specific antigen.
Why are antibiotics used – for which pathogen?
to kill bacteria
Is anti-bacterial soap a proven benefit for infection control?
yes but try to use soap and water first
