Moderate

Smooth muscles, cardiac muscles, and organs are regulated by which of the following?

Correct answer: D. Autonomic system

  • A. Central nervous system
  • B. Parasympathetic nervous system
  • C. Sympathetic nervous system
  • D. Autonomic system

Explanation

Smooth muscles, cardiac muscles, and organs are controlled by the autonomic nervous system, as they do not require conscience control and are involuntary actions. The autonomic nervous system and the somatic nervous system are part of the peripheral nervous system. The somatic nervous system controls all conscious activities, for example, the movement of skeletal muscles. The autonomic nervous system allows for tight unconscious control of the respiratory and heart rate, and other critical systems of the body. Hence, option D will be the correct option.

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About Coordination and Control

Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.

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