D)Risk behavior can harm your health
The carotid baroreceptors become less active, venous return is decreased, heart rate is reflexively elevated, and reflex vasoconstriction of peripheral blood vessels occur.
a positron emission tomography (PET) scan is an imaging test that allows your doctor to check for diseases in your body. The scan uses a special dye containing radioactive tracers. These tracers are either swallowed, inhaled, or injected into a vein in your arm depending on what part of the body is being examined
