Which respiratory measurement is useful in differentiating between obstructive and restrictive pulmonary dysfunction?

The respiratory measurement that is useful in identifying the difference of obstructive and restrictive pulmonary dysfunction is that a person with restrictive lung disease is indicative of having to have trouble of expanding the lungs while the obstructive lung disease has trouble of having to exhale air from the lungs.

they deliver oxygen to the blood

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.