What is the muscle that is under direct voluntary control of the brain called?

The muscle that is under direct voluntary control of the brain is referred to as voluntary muscle. This type of muscle, primarily skeletal muscle, is consciously controlled, allowing for the purposeful movement of the body. When the brain sends signals through the nervous system, these signals activate voluntary muscles, enabling actions such as walking, lifting, and other motor functions. Voluntary muscles are characterized by their striated appearance and their ability to contract in response to voluntary commands.

The other types of muscle—such as smooth muscle and cardiac muscle—do not fall under this category. Smooth muscle operates involuntarily and is found in the walls of internal organs, aiding in processes like digestion and blood flow regulation. Cardiac muscle, responsible for the contractions of the heart, is also involuntary and operates independently of conscious control. Involuntary muscle is an umbrella term that includes both smooth and cardiac muscle, highlighting the distinction from voluntary muscle where conscious control and movement are concerned.