A Muscle Fiber Generates Maximum Contractile Force When

question 56

Multiple Choice

A muscle fiber generates maximum contractile force when:

• A)it has been stretched excessively.
• B)some of the myofibrils contract and then relax at the same time.
• C)it receives repeated action potentials from a nerve.
• D)it has been exposed to creatine phosphate.

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Definitions:

Anconeus

A small muscle located at the back of the elbow that extends the forearm and assists in elbow joint movements.

Triceps Brachii

A major muscle of the upper arm involved in the extension of the elbow joint.

Supinate

The rotation of the forearm or foot so that the palm or sole is facing upwards or forwards.

Pronate

To rotate the forearm or the hand so that the palm faces downwards or backwards.