A&P II Notes March 27

A&P II Notes March 27 - Anatomy Physiology II Notes...

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Stress and the Immune System Chronic stress inhibits the immune system o *Decrease in salivary IgA Latent viruses reactivate EBV, HSV-1, CMV o *Decrease in number of helper T cells o *Decrease in natural killer cell numbers o Vaccines are more effective in individuals who are less stressed Flu, pneumonia vaccines o Slower wound healing Immunological disorders – two general categories o Over-reactive immune system Auto-immune diseases – immune system doesn’t recognize self as self on a  molecular level and responds as if self was a foreign antigen (attack on self),  exacerbated by stress – makes symptoms worse,  synthetic form of cortisol  (prednisone) is used for immunosuppression Lupus – immune system attacks the DNA Rheumatoid arthritis o Under-reactive immune systems Immunodeficiences, can affect B and/or T cell function Agammaglobulinemia – lack of antibodies, genetic condition where there  is a total absence of B cell immunity
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A&P II Notes March 27 - Anatomy Physiology II Notes...

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