PATHOLOGY

Detailed explanation-1: -The nervous system can use smooth muscle to tightly regulate many of the body’s subsystems for life with no thought from the user. A person does not need to think about their blood pressure for it to adapt to increasing oxygen demands from exercise.

Detailed explanation-2: -Arteries contain smooth muscle cells, which contract and relax to change the diameter of blood vessels, controlling blood flow to ensure that cells get the correct amount of oxygen and nutrients.

Detailed explanation-3: -Blood vessels contain only smooth muscle cells. These muscle cells reside within the tunica media along with elastic fibers and connective tissue.

Detailed explanation-4: -’ That is: vascular smooth muscle contracts, blood vessels become narrower and less blood flows through them. This process is called ‘vasoconstriction. ‘