CEAS Human Anatomy & Biomechanics 3

Question 1

Carpal tunnel syndrome results from compression of which nerve at the wrist?

Accepted Answer

Median nerve

Answer

The median nerve passes through the carpal tunnel and is compressed when tunnel pressure rises, causing the pain, numbness, and tingling characteristic of carpal tunnel syndrome.

Question 2

An exaggerated anterior (inward) curvature of the lumbar spine beyond normal limits is clinically described as:

Accepted Answer

Hyperlordosis

Answer

Hyperlordosis is an excessive inward curve of the lumbar spine that increases compressive loading on posterior facet joints and discs, a common finding in prolonged standing workers.

Question 3

Which of the following muscles is NOT part of the rotator cuff?

Accepted Answer

Deltoid

Answer

The rotator cuff comprises supraspinatus, infraspinatus, teres minor, and subscapularis; the deltoid is a large, superficial shoulder muscle with a separate function and origin.

Question 4

Lateral epicondylitis ('tennis elbow') involves degeneration of the common tendon origin at the lateral epicondyle, primarily affecting which muscle group?

Accepted Answer

Wrist extensors

Answer

Lateral epicondylitis affects the common extensor tendon origin — most often the extensor carpi radialis brevis — at the lateral epicondyle of the humerus.

Question 5

Thoracic outlet syndrome (TOS) involves compression of neurovascular structures (brachial plexus, subclavian vessels) between:

Accepted Answer

The clavicle or first rib and surrounding scalene or pectoralis minor muscles

Answer

TOS occurs when the brachial plexus and/or subclavian vessels are compressed within the thoracic outlet — the space bounded by the clavicle, first rib, and adjacent muscles.

CEAS - Certified Ergonomics Assessment Specialist Practice Test

CEAS - Certified Ergonomics Assessment Specialist Practice Test

CEAS Human Anatomy & Biomechanics 3