Question

______________ is a contractile tissue that can accurately change the lumen size of an arteriole so that the conductance of flow through the region is controlled in the vascular system.

Answer 1

Answer: Vascular smooth muscle cells.

Explanation:

Vascular smooth muscle cells are the contractile tissues which regulates flow blood and pressure of the blood by vasoconstriction (contraction) and/or vasodilatation (relaxation).

Vasoconstriction is the contraction of the blood vessels to increase tge pressure of the blood.

Vasodilatation is the relaxation of the blood vessels which results in a decrease in blood pressure.