Cardiac and skeletal muscle cells are both under somatic nervous system control.

Cardiac and skeletal muscle cells are both under somatic nervous system control.

• A. True
• B. Both
• C. Neither
• D. False

Answer: (D)

The main idea here is the division between somatic and autonomic control of muscles. Skeletal muscle is governed by the somatic nervous system, which sends motor neurons from the brain to skeletal muscles to produce voluntary movement. Cardiac muscle, however, is controlled by the autonomic nervous system and has intrinsic pacemaker activity that can generate rhythm without direct neural input. The autonomic system can modulate heart rate and force of contraction through sympathetic and parasympathetic signals, but it does not provide the voluntary, conscious control seen with skeletal muscle. That combination—skeletal muscle under somatic control and cardiac muscle under autonomic control—means the statement is false.

The main idea here is the division between somatic and autonomic control of muscles. Skeletal muscle is governed by the somatic nervous system, which sends motor neurons from the brain to skeletal muscles to produce voluntary movement. Cardiac muscle, however, is controlled by the autonomic nervous system and has intrinsic pacemaker activity that can generate rhythm without direct neural input. The autonomic system can modulate heart rate and force of contraction through sympathetic and parasympathetic signals, but it does not provide the voluntary, conscious control seen with skeletal muscle. That combination—skeletal muscle under somatic control and cardiac muscle under autonomic control—means the statement is false.