Psychology 2036A/B Lecture Notes - Lecture 7: Natural Killer Cell, Memory T Cell, Cytotoxic T Cell

• School: Western University
• Department: Psychology
• Course: Psychology 2036A/B
• Professor: Doug Hazlewood

Document Summary

Our bodies are constantly being assaulted by foreign threats: viruses, molds, fungi, pollen, bacteria, etc. Part 1: what is the immune system: a complex biological system that detects and destroys threats to the body, types of immunity: 3 types. Innate immunity: born with this and protect from a wide range of threats. Natural immunity: acquired from previous experience with illnesses. Eg: measles ater geing it for the irst ime, your body develops immunity and won"t get it again. Eg: polio, smallpox, etc: types of threats: 2 types. Foreign substances that have invaded the body (eg: viruses, bacteria). Cells that are not behaving normally (eg: cancerous cells; cells that have become infected with a foreign invader). Part 2: the immune system"s response to threats that have entered the body (nonspeciic & speciic: nonspeciic immunity: immune system atacks anything that looks unusual. Phagocytes: scavengers that engulf and digest anigens in blood/body luids before they (anigens) infect cells.