PSYC 3600 Lecture 4: Immune System
Document Summary
The immune system is the surveillance system. Protects the body from infection and foreign substances. The immune system produces infection fighting cells and chemicals that act before foreign substances come in your body and after foreign substances come in your body. The physiological systems involved in stress response consist of sam and. Hpa stands for hypothalamic-pituitary-axis and has phases of alarm, resistance and exhaustion. Imagine that your palm is your brain, your thumb is your limbic system for fight or flight and your fingers are your cortex that does the thinking. The 4 transmissions of infection include direct, indirect, biological and mechanical methods of transmission. Direct transmission of infection happens through touching, kissing, hugging and so on. Hpv is an example of direct transmission. Indirect transmission of infection happens through the environment like through air, food, water and so on. Influenza or the common flu is an example of indirect transmission. Biological transmission of infection happens through mosquitoes.
