Question 1

The ulnar nerve provides sensation to the ulnar side of the hand, the ulnar half of the ring finger, and the entire little finger.

Accepted Answer

A) True 
 B)False  True

Question 2

Which of the following is the primary function of the extensor pollicis longus muscle?

Accepted Answer

A)  Extension of the little finger
B)  Extension of the thumb
C)  Flexion of the index finger
D)  Flexion of the thumbE) B) and C)
F) None of the above

Question 3

Carpal tunnel syndrome is a condition in which there is an increased pressure in the carpal tunnel, which interferes with the normal function of the median nerve.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is the insertion of the extensor carpi radialis longus muscle?

Accepted Answer

A)  The base of the distal phalanges of the four fingers
B)  The base of the fifth metacarpal on the dorsal surface
C)  The base of the second metacarpal on the dorsal surface
D)  The base of the third metacarpal on the dorsal surfaceE) B) and C)
F) A) and D)

Question 5

Which of the following muscles performs extension of the index finger at the metacarpophalangeal joint?

Accepted Answer

A)  The abductor pollicis longus muscle
B)  The extensor digiti minimi muscle
C)  The extensor indicis muscle
D)  The extensor pollicis longus muscleE) None of the above
F) A) and B)

Question 6

All of the flexor tendons except for the flexor carpi ulnaris and palmaris longus pass through the carpal tunnel, along with the median nerve.

Accepted Answer

A) True 
 B)False

Question 7

The extensor carpi radialis longus muscle can perform weak extension of the elbow during a concentric contraction.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following muscles performs adduction of the wrist?

Accepted Answer

A)  The extensor carpi radialis longus muscle
B)  The flexor carpi ulnaris muscle
C)  The flexor pollicis longus muscle
D)  The palmaris longus muscleE) A) and C)
F) B) and C)

Question 9

Which of the following muscles may not be palpated on the dorsal aspect of the hand?

Accepted Answer

A)  The abductor pollicis longus muscle
B)  The extensor digitorum muscle
C)  The extensor indicis muscle
D)  The extensor pollicis longus muscleE) All of the above
F) B) and D)

Question 10

The wrist flexor muscles have their origin on the medial epicondyle of the humerus.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following muscles performs actions in the frontal plane about the sagittal axis?

Accepted Answer

A)  The abductor pollicis longus muscle
B)  The extensor digitorum muscle
C)  The extensor indicis muscle
D)  The extensor pollicis longus muscleE) None of the above
F) All of the above

Question 12

The muscles of the wrist and hand are all innervated from the radial and median nerves and their respective branches.

Accepted Answer

A) True 
 B)False

Question 13

Which of these muscles may be palpated just proximal to the dorsal aspect of the wrist and approximately 1 cm medial to the radial styloid?

Accepted Answer

A)  The extensor carpi radialis longus muscle
B)  The flexor carpi ulnaris muscle
C)  The flexor pollicis longus muscle
D)  The palmaris longus muscleE) C) and D)
F) A) and B)

Question 14

Movements of the wrist joint include flexion, extension, abduction, and adduction.

Accepted Answer

A) True 
 B)False  True

Question 15

Each finger has three interphalangeal joints, whereas the thumb has only two.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is the origin of the flexor digitorum profundus muscle?

Accepted Answer

A)  Medial epicondyle of the humerus
B)  Middle anterior surface of the radius
C)  Posterior aspect of the proximal ulna
D)  Proximal three-fourths of the anterior and medial ulnaE) C) and D)
F) All of the above

Question 17

Which of the following is the only muscle that flexes the finger distal interphalangeal joint (DIP)  joints?

Accepted Answer

A)  The flexor carpi radialis muscle
B)  The flexor carpi ulnaris muscle
C)  The flexor digitorum profundus muscle
D)  The flexor digitorum superficialis muscleE) B) and D)
F) A) and D)

Question 18

Which of the following is the origin of the flexor carpi radialis muscle?

Accepted Answer

A)  Medial epicondyle of the humerus
B)  Middle anterior surface of the radius
C)  Posterior aspect of the proximal ulna
D)  Proximal three-fourths of the anterior and medial ulnaE) C) and D)
F) A) and B)

Question 19

Which of the following muscles performs flexion of the thumb?

Accepted Answer

A)  The extensor carpi radialis longus muscle
B)  The flexor carpi ulnaris muscle
C)  The flexor pollicis longus muscle
D)  The palmaris longus muscleE) None of the above
F) All of the above

Question 20

Disruption of a tendon at or near the insertion of the ________ is known as a jersey or sweater finger and should be addressed surgically within approximately one week.

Accepted Answer

A)  extensor digitorum muscle
B)  extensor indicis muscle
C)  flexor digitorum profundus muscle
D)  flexor digitorum superficialis muscleE) None of the above
F) B) and C) C

Exam 7: The Wrist and Hand Joints

The ulnar nerve provides sensation to the ulnar side of the hand, the ulnar half of the ring finger, and the entire little finger.

Correct AnswerverifiedTrue

Which of the following is the primary function of the extensor pollicis longus muscle?

Correct AnswerverifiedShow Answer

Carpal tunnel syndrome is a condition in which there is an increased pressure in the carpal tunnel, which interferes with the normal function of the median nerve.

Correct AnswerverifiedShow Answer

Which of the following is the insertion of the extensor carpi radialis longus muscle?

Correct AnswerverifiedShow Answer

Which of the following muscles performs extension of the index finger at the metacarpophalangeal joint?

Correct AnswerverifiedShow Answer

All of the flexor tendons except for the flexor carpi ulnaris and palmaris longus pass through the carpal tunnel, along with the median nerve.

Correct AnswerverifiedShow Answer

The extensor carpi radialis longus muscle can perform weak extension of the elbow during a concentric contraction.

Correct AnswerverifiedShow Answer

Which of the following muscles performs adduction of the wrist?

Correct AnswerverifiedShow Answer

Which of the following muscles may not be palpated on the dorsal aspect of the hand?

Correct AnswerverifiedShow Answer

The wrist flexor muscles have their origin on the medial epicondyle of the humerus.

Correct AnswerverifiedShow Answer

Which of the following muscles performs actions in the frontal plane about the sagittal axis?

Correct AnswerverifiedShow Answer

The muscles of the wrist and hand are all innervated from the radial and median nerves and their respective branches.

Correct AnswerverifiedShow Answer

Which of these muscles may be palpated just proximal to the dorsal aspect of the wrist and approximately 1 cm medial to the radial styloid?

Correct AnswerverifiedShow Answer

Movements of the wrist joint include flexion, extension, abduction, and adduction.

Correct AnswerverifiedTrue

Each finger has three interphalangeal joints, whereas the thumb has only two.

Correct AnswerverifiedShow Answer

Which of the following is the origin of the flexor digitorum profundus muscle?

Correct AnswerverifiedShow Answer

Which of the following is the only muscle that flexes the finger distal interphalangeal joint (DIP) joints?

Correct AnswerverifiedShow Answer

Which of the following is the origin of the flexor carpi radialis muscle?

Correct AnswerverifiedShow Answer

Which of the following muscles performs flexion of the thumb?

Correct AnswerverifiedShow Answer

Disruption of a tendon at or near the insertion of the ________ is known as a jersey or sweater finger and should be addressed surgically within approximately one week.

Correct AnswerverifiedC

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True

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C