What elemental trend exists in each row as we move from left to right on the periodic table? number of protons decreases number of protons increases chemical reactivity of metals increases chemical reactivity of nonmetals decreases

The number of protons increases.

Explanation:

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.