Question

multiple choice question

cardiac cells contract rhythmically and independently so are called which of the following?

voluntary
smooth
autorhythmic
striated

Explanation:

Analyze the question stem

The question asks for the term used to describe cardiac cells because they contract rhythmically and independently.

Evaluate the options

• Voluntary: Refers to muscles under conscious control (skeletal muscle).
• Smooth: A type of non-striated, involuntary muscle tissue.
• Autorhythmic: Refers to cells that can generate their own rhythmic contractions independently without external nervous stimulation.
• Striated: Refers to the striped appearance of skeletal and cardiac muscle fibers under a microscope.

Select the correct term

The ability to contract rhythmically and independently is specifically defined as being autorhythmic.

Answer:

• (A) Voluntary
• (B) Smooth
• (C) Autorhythmic (Correct answer)
• (D) Striated