The structure in charge of conduction in the heart is ? a. ATRIOVENTRICULAR NODE
b. SINO-ATRIUM NODE
c. S-A NODE
d. PURKINJE FIBERS

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

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4

Which area of the brain controls the body's ability to fight off stress? question 1 options: synapse, frontal lobe, dendrite, sympathetic nervous system