Which of the Following Is NOT a Determinant of Whole-Muscle

question 66

Multiple Choice

Which of the following is NOT a determinant of whole-muscle tension?

• A) the number of muscle fibers contracting
• B) the tension produced by each contracting fiber
• C) the numbers of motor units recruited
• D) the frequency of motor neuron stimulation
• E) the proportion of the muscle fibers within each motor unit that are contracting at any given time

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Definitions:

Hold-Off Chamber

The rear chamber in a spring brake assembly that compresses the park spring when charged with air. Consists of a chamber, diaphragm, and powerful coil spring.

Parking Brakes

A secondary braking system, usually mechanically operated, designed to hold a vehicle stationary when parked.

Trailer Lock

A security device or mechanism designed to prevent the unauthorized detachment or theft of a trailer by locking it to the towing vehicle or immobilizing its wheels.

Severe Braking

A situation where brakes are applied forcefully and suddenly, often in an emergency, to reduce vehicle speed quickly.