Which of the Following Is Characteristic of Cardiac Muscle

question 59

Multiple Choice

Which of the following is characteristic of cardiac muscle?

• A) Cardiac muscles are striated.
• B) Cardiac muscles achieve tetany with every contraction.
• C) Cardiac muscle fibers are multinucleated.
• D) Cardiac muscles are faster than skeletal muscles.
• E) Neurons that innervate cardiac muscles are under voluntary control.

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Definitions:

ATP

Adenosine triphosphate, a molecule that carries energy within cells.

Carbon Dioxide

An invisible and scentless gas generated from the combustion of carbon-based substances and organic compounds, as well as from breathing processes, that is taken in by plants for photosynthesis.

Lactate

A byproduct of anaerobic metabolism, commonly produced in muscles during intense exercise, and used as an energy source.

Concentric Contractions

A type of muscle contraction in which the muscle shortens while generating force.