ENS 303 Exam 2 Review

What mechanism has the ability to change foot from flexible to rigid?

All of the following are Functions of Arches except?

• Absorb shock

• Distribute weight

• Produce Force

• Provides support

Which type of muscle activation occurs in which the muscle will either shorten or lengthen (eccentric & concentric)?

• Antagonist

• Isokinetic

• Isotonic

• Isometric

Which type of muscle activation occurs when there is no change in muscle length or joint motion (useful during immobilization)?

• Isotonic

• Isokinetic

• Isometric

• Antagonist

When performing a bicep curl, which muscle is considered the agonist?

• Brachioradialis

• Tricep

• Bicep

• Brachialis

In seated elbow flexion, what muscle relaxes/elongates as the antagonist?

• Biceps

• Brachialis

• Triceps

• Brachioradialis

T or F: In supine elbow flexion, after the 90 degree point is hit, the triceps kick in as the agonist and contract eccentrically to slow the weight?

• True

• False

In seated forearm supination, what muscle acts as a synergist to prevent elbow flexion?

• Triceps

• Biceps

• Brachialis

• Brachioradialis

When performing knee flexion exercises on weight-machine equipment, how are the hamstring muscles contracting during the lowering phase (return or decelerating phase)?

• Concentrically

• Eccentrically

• Isometrically

• Isokinetically

T or F: Active insufficiency is described when a muscle is elongated over two or more joints simultaneously, and we see limited motion due to passive restraint.

• True

• False