A psychosomatic disease is best defined as a disease in which there are no observable symptoms.
mental factors do not affect overall health.
the body and mind contribute to an illness.
stress is unrelated to physical conditions.

Nina has the flu and a high fever. her immune system is exhibiting the line of defense. this defense is part of immunity.

Why is it so important to have a lifetime commitment to training? a-it takes your entire life to become fit b-it keeps you from becoming bored c-you will lose strength and endurance once you stop exercising d-it increases your motivation in life

Group of genes that encode molecules found in all body cells, creating a biochemical “fingerprint” that serves as the “id” for cells so that they are marked as “self” a) deoxyribonucleic acid (dna) b) entry inhibitors c) major histocompatibility complex (mhc) d) non-nucleoside reverse transcription inhibitors (nnrtis)