CMP Kinesiology & Biomechanics 2

Question 1

The rotator cuff is composed of which four muscles?

Accepted Answer

Supraspinatus, infraspinatus, teres minor, and subscapularis

Answer

Deltoid, biceps brachii, triceps, and pectoralis minor

Answer

Trapezius, rhomboids, levator scapulae, and serratus anterior

Answer

Biceps brachii, brachialis, coracobrachialis, and brachioradialis

Question 2

Which type of joint allows rotation around a single axis, as seen in the atlantoaxial joint of the cervical spine?

Accepted Answer

Pivot joint

Answer

Ball-and-socket joint

Answer

Hinge joint

Answer

Saddle joint

Question 3

Pronation of the forearm involves:

Accepted Answer

Rotating the palm to face downward (posteriorly)

Answer

Rotating the palm to face upward (anteriorly)

Answer

Bending the elbow toward the shoulder

Answer

Extending the wrist into hyperextension

Question 4

Which muscle is the primary wrist flexor located on the medial (ulnar) side of the forearm?

Accepted Answer

Flexor carpi ulnaris

Answer

Extensor carpi radialis longus

Answer

Flexor carpi radialis

Answer

Palmaris longus

Question 5

In muscle function terminology, an 'agonist' is best described as:

Accepted Answer

The primary muscle responsible for producing a specific movement

Answer

A muscle that opposes and controls the prime mover

Answer

A muscle that stabilizes the proximal joint during movement

Answer

A muscle that assists indirectly through fascial connections

Question 6

Lumbar lordosis refers to:

Accepted Answer

An exaggerated anterior (inward) curve of the lower back

Answer

Excessive lateral curvature of the lumbar spine

Answer

An excessive posterior (kyphotic) curve of the thoracic spine

Answer

Lateral deviation of the spine with vertebral rotation

Question 7

What is the primary role of fascia in the musculoskeletal system?

Accepted Answer

To connect, support, and separate muscles and soft tissue structures

Answer

To generate muscular contractile force

Answer

To conduct sensory and motor nerve impulses

Answer

To produce synovial fluid for joint lubrication