Many people try to eliminate fat from their diets. which is one reason it is necessary for humans to eat fat?
a. the internal organs are cushioned by fat.
b. eating fat is the fastest way to get energy.
c. fat stores less energy than polysaccharides.
d. saturated fats clear out the blood vessels.

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.