NCBTMB Kinesiology and Biomechanics 3

Question 1

Which rotator cuff muscle is most commonly involved in impingement syndrome?

Accepted Answer

Supraspinatus

Answer

The supraspinatus tendon is most frequently impinged under the coracoacromial arch, making it the most common rotator cuff muscle involved in shoulder impingement.

Question 2

A force couple at the shoulder girdle involves coordinated action between the upper trapezius, lower trapezius, and:

Accepted Answer

Serratus anterior

Answer

The serratus anterior works with the upper and lower trapezius to create upward rotation of the scapula through a force couple mechanism.

Question 3

The center of gravity in the adult human body is typically located:

Accepted Answer

Anterior to the S2 vertebra

Answer

The center of gravity in adults is typically located just anterior to the second sacral segment (S2), within the pelvis.

Question 4

Which plane of motion does lumbar lateral flexion occur in?

Accepted Answer

Frontal (coronal) plane

Answer

Lateral flexion of the lumbar spine occurs in the frontal (coronal) plane around an anterior-posterior axis.

Question 5

Which muscle is the primary wrist flexor and also contributes to forearm pronation?

Accepted Answer

Flexor carpi radialis

Answer

The flexor carpi radialis is the primary wrist flexor and also assists in forearm pronation due to its distal attachment on the radial side.

NCBTMB Exam Practice Test

NCBTMB Exam Practice Test

NCBTMB Kinesiology and Biomechanics 3