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Anatomy of the Hand: Carpal Bones and Flexor Retinaculum

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Questions and Answers

What is the main structure that completes the carpal arch by attaching to the flexor retinaculum?

Scaphoid bone
Trapezium bone
Pisiform bone (correct)
Hamate bone

What nerve passes through the carpal tunnel?

Median nerve (correct)
Axillary nerve
Radial nerve
Ulnar nerve

Which of the following tendons does NOT pass through the carpal tunnel?

Flexor digitorum profundus tendon
Extensor digitorum communis tendon (correct)
Flexor digitorum superficialis tendon
Flexor pollicis longus tendon

What is the result of compression of the median nerve within the carpal tunnel?

Carpal tunnel syndrome (B) Signup and view all the answers

What is the main function of the flexor retinaculum?

To convert the concave anterior surface of the wrist into an osteofascial tunnel (B) Signup and view all the answers

Which structure passes superficial to the flexor retinaculum?

Palmar cutaneous branch of median nerve (A) Signup and view all the answers

What is the purpose of the synovial sheath?

To lubricate the tendons (A) Signup and view all the answers

What is the function of the septa sent by the extensor retinaculum?

To form compartments for the tendons (B) Signup and view all the answers

What is the Anatomical Snuff Box also known as?

Radial fossa (C) Signup and view all the answers

Which tendon is located at the ulnar border of the Anatomical Snuff Box?

Tendon of the extensor pollicis longus (C) Signup and view all the answers

What is the shape of the Anatomical Snuff Box?

Triangular (A) Signup and view all the answers

What structures pass deep to the Extensor Retinaculum?

Tendons of the extensor carpi ulnaris and extensor digiti minimi (C) Signup and view all the answers

What is the relationship between the ulnar nerve and the pisiform bone?

The ulnar nerve lies lateral to the pisiform bone (B) Signup and view all the answers

What is the purpose of the extensor retinaculum?

To hold the long extensor tendons in position (D) Signup and view all the answers

What vein is located on the medial aspect of the wrist?

Basilic vein (A) Signup and view all the answers

What is the origin of the palmar cutaneous branch of the ulnar nerve?

Ulnar nerve (A) Signup and view all the answers

What is the attachment of the extensor retinaculum medially?

Pisiform bone (D) Signup and view all the answers

What is the structure that lies superficial to the flexor retinaculum?

Palmaris longus tendon (B) Signup and view all the answers

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