Part of the human body system is pictured. - Kidney
Ureter
Bladder
The main function of this system is to -
O control reproduction
transport oxygen
O produce hormones
remove waste

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.

a

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter