Hand Anatomy

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Which compartment of the hand is primarily responsible for abduction, flexion, and opposition of the 1st digit (thumb)?

Adductor

Central

Hypothenar

Thenar (correct)

What action is the adductor pollicis muscle responsible for?

Abduction

Opposition

Adduction (correct)

Flexion

Which digit does the hypothenar compartment primarily move?

2nd digit

1st digit

5th digit (correct)

3rd digit

What is the action of the lumbrical muscles in the central compartment and which digits do they act upon?

Flexion of digits 2-5 at the MCP joints Signup and view all the answers

What are the actions of the dorsal interossei muscles in the interosseous compartment and which digits do they act upon?

Abduction of 2nd-4th digits Signup and view all the answers

What are the actions of the palmar interossei muscles in the interosseous compartment and which digits do they act upon?

Adduction of digits 2, 4, and 5 Signup and view all the answers

Where would you palpate the radial pulse?

On the anterior distal radius just proximal to the radialcarpal joint Signup and view all the answers

Where would you palpate the ulnar pulse?

On the anterior distal ulna just proximal to the radialcarpal joint Signup and view all the answers

What are the borders of the anatomical snuff box?

Anterior: tendons of abductor pollicis longus and extensor pollicis brevis, Posterior: tendon of extensor pollicis longus, Floor: scaphoid and trapezium Signup and view all the answers

What are the tendons that pass through the carpal tunnel?

Flexor Digitorum Superficialis (4), Flexor Digitorum Profundus (4), Flexor Pollicis Longus (1) Signup and view all the answers

Hand Anatomy

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Questions and Answers

Which compartment of the hand is primarily responsible for abduction, flexion, and opposition of the 1st digit (thumb)?

What action is the adductor pollicis muscle responsible for?

Which digit does the hypothenar compartment primarily move?

What is the action of the lumbrical muscles in the central compartment and which digits do they act upon?

What are the actions of the dorsal interossei muscles in the interosseous compartment and which digits do they act upon?

What are the actions of the palmar interossei muscles in the interosseous compartment and which digits do they act upon?

Where would you palpate the radial pulse?

Where would you palpate the ulnar pulse?

What are the borders of the anatomical snuff box?

What are the tendons that pass through the carpal tunnel?

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