EXAM Review muscles

Front

What is the contraction period in muscle physiology?

Back

The contraction period is the time when a muscle generates external tension, allowing it to overcome a load and cause movement.

Front

What is the chief function of T tubules in muscle cells?

Back

T tubules allow electrical impulses to travel deep into the muscle cell, facilitating muscle contraction.

Front

What is an individual muscle cell referred to as?

Back

An individual muscle cell is referred to as a fiber.

Front

True or False: Myosin and actin physically interact when the muscle is resting.

Back

False. Myosin and actin do not interact when the muscle is at rest.

Front

What muscle is primarily responsible for elbow extension?

Back

The Triceps brachii is primarily responsible for elbow extension.

Front

Define muscle twitch.

Back

A muscle twitch is a brief contraction of a muscle fiber in response to a stimulus.

Front

What is the latent period in muscle contraction?

Back

The latent period is the time between the application of a stimulus and the beginning of muscle contraction.

Front

What role do calcium ions play in muscle contraction?

Back

Calcium ions are essential for muscle contraction as they trigger the interaction between myosin and actin.

Front

What is the relaxation period in muscle physiology?

Back

The relaxation period is the time when the muscle returns to its resting state after contraction.

Front

What is the threshold stimulus in muscle contraction?

Back

The threshold stimulus is the minimum level of stimulation required to trigger a muscle contraction.