The only muscle that possesses both voluntary and involuntary abilities is the ________.
A)Heart
B)Lung
C)Diaphragm
D)Brain

Question

Quizplus · Accepted Answer

The diaphragm is the muscle responsible for breathing, and it can be controlled both voluntarily (e.g. when taking deep breaths) and involuntarily (e.g. during normal breathing). The heart is also an involuntary muscle, meaning it contracts and pumps blood without conscious control, while the lungs are entirely involuntary and can't be consciously controlled. The brain isn't a muscle, so it doesn't possess any voluntary or involuntary abilities in the same way.

The Only Muscle That Possesses Both Voluntary and Involuntary Abilities