Which type of muscle tissue is responsible for involuntary movements?

The correct answer is that both cardiac and smooth muscle tissues are responsible for involuntary movements.

Cardiac muscle is found only in the heart and is responsible for pumping blood throughout the body. It operates independently of conscious thought, contracting rhythmically and continuously to manage the heart's function without needing direct input from the nervous system.

Smooth muscle, on the other hand, is found in the walls of hollow organs such as the intestines, bladder, and blood vessels. It also functions involuntarily, controlling movements such as peristalsis in the digestive tract and regulating blood flow through vasodilation and vasoconstriction.

Skeletal muscle, in contrast, is primarily responsible for voluntary movements. It is under conscious control, allowing for deliberate actions such as walking and lifting.

Therefore, both cardiac and smooth muscles play crucial roles in the body’s involuntary actions, making the combination of these two types the correct choice for this question.