Which muscle type is specialized and only found in the heart?

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Multiple Choice

Which muscle type is specialized and only found in the heart?

Explanation:
Cardiac muscle is specialized to pump blood with coordinated, rhythmic contractions and is found only in the heart. It combines the organized structure of skeletal muscle with involuntary control and features intercalated discs that connect cells so they contract as a unit. This network and its high aerobic capacity enable the heart to beat continuously without fatigue. Because of these unique properties, cardiac muscle is restricted to the heart. Skeletal muscle is voluntary and attached to bones; smooth muscle lines hollow organs and vessels and contracts involuntarily but lacks the intercalated-disc network; nerve tissue is not muscle at all.

Cardiac muscle is specialized to pump blood with coordinated, rhythmic contractions and is found only in the heart. It combines the organized structure of skeletal muscle with involuntary control and features intercalated discs that connect cells so they contract as a unit. This network and its high aerobic capacity enable the heart to beat continuously without fatigue. Because of these unique properties, cardiac muscle is restricted to the heart. Skeletal muscle is voluntary and attached to bones; smooth muscle lines hollow organs and vessels and contracts involuntarily but lacks the intercalated-disc network; nerve tissue is not muscle at all.

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