3. what you weigh isn't as important as the proportion of your body that's composed of fat because a. a body that's comprised of more muscle mass will weigh more but is actually healthier than a body that's composed of more fat. b. weight doesn't matter when discussing overall health. c. the more fat you have the more protected your body is. d. fat gives your body energy to function, while muscle mass is used only to perform strenuous activity.

the aorta is the large artery leaving the heart branches into smaller arteries, which eventually branch into capillaries.the arteries carry oxygen and nutrients away from your heart, to your body's tissues. the capillaries are small, thin blood vessels that connect the arteries and the veins. the statement that arteries carry oxygen-rich blood to capillaries is true. veins on the other hand are blood vessels that take oxygen-poor blood back to the heart.