Which of the following is not an example of the physical, mechanical, and chemical barriers at body surfaces that prevent most microbes from entering the internal environment?

This organ is thought to play a role in the immune system by keeping a reservoir of "good" bacteria:   thymus   spleen   bone marrow   lymph nodes   appendix

Which of the following would produce the most severe immunocompromised condition? Clogged arteries reduce the efficiency with which cells can move throughout the body A virus attacks mast cells, so that they are not able to release signaling factors when they encounter pathogens A mutation in the gene that controls keratin synthesis produces extremely brittle hair, both inside & outside the body Severe burns damaged multiple layers of the skin, so secretions of mucus, sweat & oil are all significant lower than normal None of these conditions affect the immune system

The fundamental reason for the four cardinal signs of inflammation is because of a high level of ___ in the area of cell damage.

What happens to cancer cells and tissues when they are exposed to > 50 °C for 10 mins? Mark all that apply: Proteins are denaturing (unfolding, aggregation) Destruction of cell membranes Impairs DNA synthesis and protein expression The tissue damage is irreversible This process if referred to as hypothermia. The tissue damage is reversible