Shortening of a muscle cell is known as what type of contraction?staticconcentriceccentricinvoluntary

Break Down the Problem

1. Identify the types of muscle contractions listed: static, concentric, eccentric, and involuntary.
2. Determine what is meant by "shortening of a muscle cell."

Relevant Concepts

1. Concentric Contraction: This is when a muscle shortens while producing force.
2. Eccentric Contraction: This occurs when a muscle lengthens while still producing force.
3. Static Contraction: Also known as isometric contraction, where the muscle does not change length while exerting force.
4. Involuntary Contraction: Refers to muscle contractions that are not under conscious control, often associated with smooth or cardiac muscle.

Analysis and Detail

• A muscle contraction that results in the muscle shortening as it generates force is termed a concentric contraction. For instance, during the upward phase of a bicep curl, the bicep muscle shortens as it contracts to lift the weight.

Verify and Summarize

• Given the definitions, the type of muscle contraction that causes shortening of a muscle cell is clearly identified as concentric.

Final Answer

The shortening of a muscle cell is known as a concentric contraction.