Chapter 9 - Physical Disorders and Health Psychology Flashcards
Major contributors to illness
- Psychological
- Behavioral
Psychosomatic medicine
Psychological factors affect somatic (physical) function
Behavioral Medicine
Knowledge derived from behavioral science is applied to the prevention, diagnosis, and treatment of medical problems.
Heath Psychology
[Subfield of Behavioral Medicine] Practitioners
Promote the maintenance of health along with analyzing and recommending improvements in health-care systems and health-policy formation within the field of psychology.
Psychological and Social Factors influence health in 2 ways
- Affect the basic biological processes that lead to illness and diseases
- Long-standing behavioral patterns may put people at risk to develop certain physical disorders.
General Adaption Syndrome (GAS)
Body goes through several stages in response to sustained stress
1. Alarm response to immediate danger or threat
2. Stage of resistance where we mobilize various coping mechanisms to respond to continuing stress
3. Stage of exhaustion in which our bodies suffer permeant damage or death if the stress is too intense or lasts too long.
Self-efficacy
Psychological factors in the sense of control and confidence allows us to cope with stress or challenges
Immune System
Protects the body from any foreign materials that may enter it, including cold viruses
(effect of stress on susceptibility to infections is mediated through the immune system.
Antigen
Any number of substances usually bacteria, viruses, or parasites
[Immune system identifies antigens and eliminates them in the body]
Two main parts of the immune system
- Humoral
- Cellular
Leukocytes
White blood cells that do most of the work, include:
*Macrophages - surround identifiable antigens and destroy them
* Lymphocytes - contain two groups (B cells and T cells) are signaled by the macrophages
B cells
Operate within the humoral part of the immune system, releasing molecules (immunoglobulins acting as antibodies) that seek antigens to neutralize them.
- Memory B cells - created after the antigens have been neutralized so next time the antigen is encountered, the immune system may respond top the antigen faster.
T cells
Operate within the cellular brain of the immune system
- Killer T cells - directly destroys viruses and cancer cells
- Memory T cells - are created to speed future response to the same antigen
- Helper T cells (aka T4 cells) - enhance the immune system response by signaling B cells to produce antibodies and telling other T cells to destroy the antigen.
- Suppressor T cells - suppress the production of antibodies by B cells when they are no longer needed.
Autoimmune disease
(such as Rheumatoid arthritis)
With too many T4 cells, the immune system is overreactive and may attack the body’s normal cells rather than antigens causing the body to be subject to invasion by a number of antigens.
Immunotherapy
Anticancer viruses genetically engineered to enter cancer cells, stimulating the patient’s own immune system to destroy the cancer throughout the patient’s body.
Psychoneuroimmunology
Object of study is psychological influences on the neurological responding implicated in our immune response.
[connections between the nervous system and the immune system.]