I think its the brain using the spinal cord
Human skeletal muscle cells are signaled to contract by the brain.
The skeletal muscle is the only type of muscle which is voluntary.
skeletal muscle, smooth muscle, cardiac muscle
The diaphragm, it is the main muscle used for breathing.
Skeletal - Skeletal muscle is the muscle that is attached to the skeleton across joints. It is under voluntary control as we decide when to contract them and produce movement. Skeletal muscle is arranged in rows of fibres and is also called striated, or striped, due to its appearance. The co-ordinated contractions of skeletal muscles allow us to move smoothly and produce sports skills. There are over 700 skeletal muscles in the human body and they make up around 40% of our bodyweight. Skeletal muscle is responsible for the following functions:-Producing movement-Maintaining body posture-Generating heat to keep us warm-Storage of glycogen for energy
under the control of human
The alternating A and I bands on the miofibrils.
3; cardiac, smooth and skeletal
Muscle cells
Skeletal muscles are the largest percentage of total muscle fibers in the human body.
Human muscle tissues are either skeletal, smooth, or cardiac. Each has unique properties. Skeletal muscle is used to move you around, breathe, etc. Smooth muscle is found in blood vessels, and cardiac muscle is found only in the heart.
Muscle cells contract and relax in response to nerve impulses, causing movement. The human body has three types of muscle cells. Skeletal muscle cells control movement of bones, such as our arms and legs.
Skeletal Muscle tissue is the only tissue that responds to voluntary movement. Smooth and Cardiac muscle tissue are controlled by the central nervous system.