Occupational Therapist Test Biomechanics and Kinesiology 2

Question 1

During normal gait, the stance phase constitutes approximately what percentage of the gait cycle?

Accepted Answer

60%

Answer

40%

Answer

75%

Answer

50%

Question 2

Torque is calculated as the product of force and:

Accepted Answer

The perpendicular distance from the axis of rotation (moment arm)

Answer

Velocity of the moving segment

Answer

Total mass of the limb segment

Answer

Acceleration of the segment

Question 3

The rotator cuff muscles serve which primary biomechanical function at the shoulder?

Accepted Answer

Dynamic stabilization of the humeral head within the glenoid fossa

Answer

Producing shoulder flexion and extension

Answer

Controlling elbow flexion during functional reaching

Answer

Generating scapular protraction and retraction

Question 4

In spinal biomechanics, the nucleus pulposus of an intervertebral disc functions primarily as:

Accepted Answer

A hydraulic shock absorber that distributes compressive forces

Answer

A rigid weight-bearing column

Answer

A ligamentous stabilizer limiting rotation

Answer

A pain-sensing receptor for compressive load

Question 5

In a healthy standing adult, the center of gravity is typically located:

Accepted Answer

Anterior to the S2 vertebra

Answer

At the level of the umbilicus

Answer

At the level of L4–L5

Answer

At the level of the iliac crest

Question 6

Which scapular movement is essential during overhead reaching to maintain adequate subacromial space and prevent impingement?

Accepted Answer

Upward rotation

Answer

Downward rotation

Answer

Scapular retraction

Answer

Scapular depression

Question 7

Optimal elbow angle for seated computer workstation ergonomics is approximately:

Accepted Answer

90–100 degrees of flexion

Answer

60–70 degrees of flexion

Answer

120–130 degrees of flexion

Answer

Full elbow extension