26_Muscle Function

What type of muscle contraction occurs when the external torque is greater than the internal torque?

• concentric

• isometric

• eccentric

• isokinetic

During an eccentric contraction, the ___________ muscle group is active.

• agonist

• antagonist

• agonist and antagonist

• neutralizer

What happens to the force producing capabilities as the concentric contraction velocity increases?

• decreases

• increases

• decreases then increases

• increases then decreases

When does passive tension contribute to total tension produced by a muscle?

• >50% resting length

• >100% resting length

• >125% resting length

• >150% resting length

When the sarcomere is in a shortened position, force production decreases because:

• actin-actin overlap

• myosin-myosin overlap

• inadequate actin-myosin overlap

• all of the listed

How is muscle power measured for humans?

• torque

• rate of torque development

• endurance

• fatigue

If the muscle is 45 degrees relative to the bone, what forces are applied by the muscle? Select all that apply.

• rotarty

• stabilizing

• dislocating

• none of the listed

What happens to muscle power as the concentric contraction velocity increases?

• increases

• decreases

• increases then decreases

• decreases then increases