Oxygen is not the simplest element.
True or false

false, Hydrogen is the simplist

Hydrogen is the simplest element; its atom consists of only one proton and one electron

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.