Which of the following does not refer to involuntary muscles?

Prepare for the Chicago Master Esthetician Test. Study with flashcards and multiple choice questions, each question includes hints and explanations. Get ready for your exam with confidence!

Skeletal muscles are classified as voluntary muscles, which means they can be consciously controlled by an individual. This is in contrast to involuntary muscles, which function without conscious control. Cardiac muscles, found in the heart, and smooth muscles, which line various organs and blood vessels, are both considered involuntary because their movements are automatic and are regulated by the autonomic nervous system.

Understanding this distinction is essential for recognizing how different types of muscle tissues work in the body. Voluntary muscles like skeletal muscles allow for intentional movements, such as lifting objects or walking. In contrast, involuntary muscles are crucial for processes that we don't consciously control, such as the heartbeat and the peristalsis that moves food through the digestive tract.

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