Muscles II flashcard

Front

What is concentric contraction?

Back

A type of muscle contraction where the muscle shortens while generating force.

Front

What is eccentric contraction?

Back

A type of muscle contraction where the muscle lengthens while generating force.

Front

What is isometric contraction?

Back

A type of muscle contraction where the muscle generates force without changing length.

Front

What is wave summation?

Back

A phenomenon where muscle fibers are stimulated before the previous twitch ends, leading to increased force.

Front

What are motor units?

Back

A motor unit consists of a motor neuron and the muscle fibers it innervates.

Front

What happens when larger motor units are activated?

Back

More muscle fibers are recruited, leading to greater force production.

Front

Why is energy important for muscle contraction?

Back

Muscle contractions require ATP for energy; without it, maximum force cannot be sustained.

Front

What is the latent period in muscle contraction?

Back

The time between the stimulus and the beginning of muscle contraction.

Front

What occurs during the contraction phase?

Back

Muscle fibers actively shorten, generating force.

Front

What is muscle fatigue?

Back

A decline in the ability of a muscle to generate force, often due to prolonged activity.