Lecture 5 Flashcards
what is innate immunity?
fast + non-specific (same responses every time/everyone has them)
what is adaptive immunity?
slow + specific (adapts to specific invaders)
what do natural killer cells do?
*soldiers that look for abnormal cells, invade, then kill them
how do soldier cells perform?
- soldiers: natural killer cells
- perforin: hole-punching chemical
- complement: bomb-like chemical
What are macrophages?
part of innate; cookie monster; they eat the cells into little bits and don’t care what kind of cell it is
What does the tattle tale club do?
Antigen presenting cells*
Figure out what the invader is and report back to mission control; they take a chunk of what’s invading (antigen)
Who is in the tattle tale club?
macrophages, dendritic cells, b-cells
suicide bombers
(always end in -phils); go up to a cell and release destructive enzymes to degranulate; so powerful that everything near is destroyed
What are b-cells?
specifically designed poison (antibodies) to kill their victims
What are t-cells?
directly eat/kill victims
What does stress do to your immune system?
increases innate response & decreases adaptive response
Long-term stress, which occurs in the HPA Axis & Glucocorticoids, has what affect in the immune response?
It decreases adaptive immunity
What kind of stress increases the innate immunity system?
Short-term
Who conducted the study on stress and heal-wounding?
Janice Kiecolt-Glaser
Susan Lutgendorf conducted a study on:
Stress and tumor progression
