Deck 7: Muscles of the Wrist Joint

Question 1

If a muscle crosses the wrist joint laterally (radially),what will its action be?

A)extension of the hand at the wrist joint
B)flexion of the hand at the wrist joint
C)radial deviation (abduction)of the hand at the wrist joint
D)ulnar deviation (adduction)of the hand at the wrist joint

Answer 1

C

Question 2

Which are actions of the flexor carpi ulnaris?

A)flexion of the hand at the wrist joint and extension of the forearm at the elbow joint
B)flexion and radial deviation (abduction)of the hand at the wrist joint
C)flexion and ulnar deviation (adduction)of the hand at the wrist joint
D)radial deviation (abduction)and ulnar deviation (adduction)of the hand at the wrist joint

Answer 2

C

Question 3

If a muscle crosses the wrist joint posteriorly,what will its action be?

A)extension of the hand at the wrist joint
B)flexion of the hand at the wrist joint
C)radial deviation (abduction)of the hand at the wrist joint
D)ulnar deviation (adduction)of the hand at the wrist joint

Answer 3

A

Question 4

Which are the attachments of the palmaris longus?

A)lateral epicondyle of the humerus (via the common extensor tendon)to the radial hand on the posterior side
B)medial epicondyle of the humerus (via the common flexor tendon)to the ulnar hand on the anterior side
C)medial epicondyle of the humerus (via the common flexor tendon)to the palm of the hand
D)medial epicondyle of the humerus (via the common flexor tendon)to the radial hand on the anterior side

Question 5

Which are the attachments of the extensor carpi radialis longus?

A)medial epicondyle of the humerus (via the common flexor tendon)to the radial hand on the anterior side
B)medial supracondylar ridge of the humerus to the radial hand on the posterior side
C)lateral supracondylar ridge of the humerus to the radial hand on the posterior side
D)anterior ulna to the ulnar hand on the posterior side

Question 6

If a muscle crosses the wrist joint anteriorly,what will its action be?

A)extension of the hand at the wrist joint
B)flexion of the hand at the wrist joint
C)radial deviation (abduction)of the hand at the wrist joint
D)ulnar deviation (adduction)of the hand at the wrist joint

Question 7

Which muscles attach onto the lateral epicondyle of the humerus (via the common extensor tendon)?

A)flexor carpi radialis and flexor carpi ulnaris
B)extensor carpi radialis longus,extensor carpi radialis brevis,and extensor carpi ulnaris
C)extensor carpi radialis brevis and extensor carpi ulnaris
D)pronator teres and pronator quadratus

Question 8

Which muscles attach onto the medial epicondyle of the humerus (via the common flexor tendon)?

A)pronator teres,flexor carpi radialis,and palmaris longus
B)pronator quadratus,palmaris longus,and flexor carpi ulnaris
C)extensor carpi radialis longus,extensor carpi radialis brevis,and extensor carpi ulnaris
D)pronator teres,flexor digitorum superficialis,and flexor digitorum profundus

Question 9

Which is an action of the extensor carpi ulnaris?

A)radial deviation (abduction)of the hand at the wrist joint
B)flexion of the hand at the wrist joint
C)extension of the arm at the glenohumeral joint
D)ulnar deviation (adduction)of the hand at the wrist joint

Question 10

Which are the attachments of the flexor carpi radialis?

A)medial epicondyle of the humerus (via the common flexor tendon)to the ulnar hand on the anterior side
B)supraglenoid tubercle and coracoid process of the scapula to the radial tuberosity
C)medial epicondyle of the humerus (via the common flexor tendon)and the coronoid process of the ulna to the radial hand on the anterior side
D)medial epicondyle of the humerus (via the common flexor tendon)to the radial hand on the anterior side

Question 11

Which is an action of the flexor carpi ulnaris?

A)extension of the hand at the wrist joint
B)flexion of the hand at the wrist joint
C)radial deviation (abduction)of the hand at the wrist joint
D)flexion of the arm at the glenohumeral joint

Question 12

Which are the attachments of the extensor carpi ulnaris?

A)medial epicondyle of the humerus (via the common flexor tendon)and the ulna to the ulnar hand on the anterior side
B)lateral supracondylar ridge of the humerus to the radial hand on the posterior side
C)lateral epicondyle of the humerus (via the common extensor tendon)to the ulnar hand on the posterior side
D)medial epicondyle of the humerus (via the common extensor tendon)to the ulnar hand on the posterior side

Question 13

Which is an action of the extensor carpi radialis brevis?

A)ulnar deviation (adduction)of the hand at the wrist joint
B)radial deviation (abduction)of the hand at the wrist joint
C)flexion of the hand at the wrist joint
D)flexion of the arm at the glenohumeral joint

Question 14

Which is an action of the extensor carpi radialis longus?

A)radial deviation (abduction)of the hand at the wrist joint
B)ulnar deviation (adduction)of the hand at the wrist joint
C)flexion of the hand at the wrist joint
D)extension of the arm at the glenohumeral joint

Question 15

Which are the attachments of the extensor carpi radialis brevis?

A)lateral supracondylar ridge of the humerus to the styloid process of the radius
B)medial epicondyle of the humerus (via the common flexor tendon)to the radial hand on the anterior side
C)medial epicondyle of the humerus (via the common flexor tendon)to the radial hand on the posterior side
D)lateral epicondyle of the humerus (via the common extensor tendon)to the radial hand on the posterior side

Question 16

Which is an action of the flexor carpi radialis?

A)ulnar deviation (adduction)of the hand at the wrist joint
B)extension of the hand at the wrist joint
C)flexion of the hand at the wrist joint
D)extension of the arm at the glenohumeral joint

Question 17

Which are the attachments of the flexor carpi ulnaris?

A)medial epicondyle of the humerus (via the common flexor tendon)and the radius to the radial hand on the anterior side
B)medial epicondyle of the humerus (via the common flexor tendon)to the palm of the hand
C)medial epicondyle of the humerus (via the common flexor tendon)and the ulna to the ulnar hand on the anterior side
D)lateral epicondyle of the humerus (via the common extensor tendon)to the ulnar hand on the posterior side

Question 18

Which is an action of the palmaris longus?

A)ulnar deviation (adduction)of the hand at the wrist joint
B)radial deviation (abduction)of the hand at the wrist joint
C)flexion of the hand at the wrist joint
D)extension of the hand at the wrist joint

Question 19

Which is an action of the flexor carpi radialis?

A)flexion of the arm at the glenohumeral joint
B)supination of the forearm at the radioulnar joints
C)ulnar deviation (adduction)of the hand at the wrist joint
D)radial deviation (abduction)of the hand at the wrist joint

Question 20

If a muscle crosses the wrist joint medially (on the ulnar side),what will its action be?

A)extension of the hand at the wrist joint
B)flexion of the hand at the wrist joint
C)radial deviation (abduction)of the hand at the wrist joint
D)ulnar deviation (adduction)of the hand at the wrist joint

Question 21

If a muscle crosses the wrist joint medially (on the ulnar side),what will its eccentric function be?

A)restrains/slows extension of the hand at the wrist joint
B)restrains/slows flexion of the hand at the wrist joint
C)restrains/slows radial deviation (abduction)of the hand at the wrist joint
D)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint

Question 22

Which muscles flex the hand at the wrist joint?

A)flexor carpi ulnaris and extensor carpi ulnaris
B)flexor carpi ulnaris and flexor carpi radialis
C)palmaris longus and extensor carpi radialis longus
D)extensor carpi radialis longus and extensor carpi radialis brevis

Question 23

If a muscle crosses the wrist joint laterally (radially),what will its eccentric function be?

A)restrains/slows extension of the hand at the wrist joint
B)restrains/slows flexion of the hand at the wrist joint
C)restrains/slows radial deviation (abduction)of the hand at the wrist joint
D)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint

Question 24

Which is an eccentric function of the flexor carpi ulnaris?

A)restrains/slows extension of the hand at the wrist joint
B)restrains/slows flexion of the hand at the wrist joint
C)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint
D)restrains/slows flexion of the arm at the glenohumeral joint

Question 25

Which are actions of the extensor carpi radialis longus?

A)extension and ulnar deviation (adduction)of the hand at the wrist joint
B)flexion and radial deviation (abduction)of the hand at the wrist joint
C)extension of the hand at the wrist joint and flexion of the arm at the glenohumeral joint
D)extension and radial deviation (abduction)of the hand at the wrist joint

Question 26

Which of the following are actions of the flexor carpi radialis?

A)flexion and radial deviation (abduction)of the hand at the wrist joint
B)extension and radial deviation (abduction)of the hand at the wrist joint
C)flexion and ulnar deviation (adduction)of the hand at the wrist joint
D)flexion and extension of the forearm at the elbow joint

Question 27

Which are actions of the extensor carpi radialis brevis?

A)extension and radial deviation (abduction)of the hand at the wrist joint
B)flexion and radial deviation (abduction)of the hand at the wrist joint
C)extension of the hand at the wrist joint and extension of the forearm at the elbow joint
D)extension and ulnar deviation (adduction)of the hand at the wrist joint

Question 28

If a muscle crosses the wrist joint posteriorly,what will its eccentric function be?

A)restrains/slows extension of the hand at the wrist joint
B)restrains/slows flexion of the hand at the wrist joint
C)restrains/slows radial deviation (abduction)of the hand at the wrist joint
D)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint

Question 29

What nerve innervates the flexor carpi radialis?

A)median nerve
B)axillary nerve
C)radial nerve
D)ulnar nerve

Question 30

Which is an eccentric function of the flexor carpi radialis?

A)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint
B)restrains/slows radial deviation (abduction)of the hand at the wrist joint
C)restrains/slows flexion of the hand at the wrist joint
D)restrains/slows extension of the arm at the glenohumeral joint

Question 31

Which muscles radially deviate (abduct)the hand at the wrist joint?

A)flexor carpi radialis,extensor carpi radialis longus,and extensor carpi radialis brevis
B)flexor carpi radialis,flexor carpi ulnaris,and palmaris longus
C)flexor carpi ulnaris and extensor carpi ulnaris
D)extensor carpi ulnaris,extensor carpi radialis longus,and extensor carpi radialis brevis

Question 32

If a muscle crosses the wrist joint anteriorly,what will its eccentric function be?

A)restrains/slows extension of the hand at the wrist joint
B)restrains/slows flexion of the hand at the wrist joint
C)restrains/slows radial deviation (abduction)of the hand at the wrist joint
D)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint

Question 33

Which is an eccentric function of the extensor carpi radialis longus?

A)restrains/slows radial deviation (abduction)of the hand at the wrist joint
B)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint
C)restrains/slows extension of the hand at the wrist joint
D)restrains/slows extension of the arm at the glenohumeral joint

Question 34

Which is an eccentric function of the flexor carpi radialis?

A)restrains/slows flexion of the arm at the glenohumeral joint
B)restrains/slows pronation of the forearm at the radioulnar joints
C)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint
D)restrains/slows radial deviation (abduction)of the hand at the wrist joint

Question 35

What nerve innervates the palmaris longus?

A)median nerve
B)axillary nerve
C)radial nerve
D)ulnar nerve

Question 36

Which is an eccentric function of the palmaris longus?

A)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint
B)restrains/slows radial deviation (abduction)of the hand at the wrist joint
C)restrains/slows flexion of the hand at the wrist joint
D)restrains/slows extension of the hand at the wrist joint

Question 37

Which are actions of the extensor carpi ulnaris?

A)extension and radial deviation (abduction)of the hand at the wrist joint
B)extension of the hand at the wrist joint and flexion of the forearm at the elbow joint
C)extension and ulnar deviation (adduction)of the hand at the wrist joint
D)pronation and supination of the forearm at the radioulnar joints

Question 38

Which is an eccentric function of the extensor carpi ulnaris?

A)restrains/slows radial deviation (abduction)of the hand at the wrist joint
B)restrains/slows extension of the hand at the wrist joint
C)restrains/slows extension of the arm at the glenohumeral joint
D)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint

Question 39

Which is an eccentric function of the extensor carpi radialis brevis?

A)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint
B)restrains/slows radial deviation (abduction)of the hand at the wrist joint
C)restrains/slows extension of the hand at the wrist joint
D)restrains/slows flexion of the arm at the glenohumeral joint

Question 40

What nerve innervates the flexor carpi ulnaris?

A)median nerve
B)axillary nerve
C)radial nerve
D)ulnar nerve

Question 41

What nerve innervates the extensor carpi radialis longus?

A)median nerve
B)axillary nerve
C)radial nerve
D)ulnar nerve

Question 42

What nerve innervates the extensor carpi radialis brevis?

A)median nerve
B)axillary nerve
C)radial nerve
D)ulnar nerve

Question 43

What are the three muscles of the "wrist extensor group"?

A)flexor carpi radialis,flexor carpi ulnaris,and palmaris longus
B)brachioradialis,extensor carpi radialis longus,and extensor carpi radialis brevis
C)extensor carpi radialis longus,extensor carpi radialis brevis,and extensor digitorum
D)extensor carpi radialis longus,extensor carpi radialis brevis,and extensor carpi ulnaris

Question 44

The flexor carpi radialis arises proximally from the medial epicondyle of the humerus as a part of what structure?

A)common flexor tendon
B)common extensor tendon
C)rotator cuff tendon
D)none of the above

Question 45

Which muscle of the wrist flexor group is commonly absent?

A)flexor carpi radialis
B)palmaris longus
C)flexor carpi ulnaris
D)pronator teres

Question 46

All three muscles of the wrist flexor group can also do what action?

A)flexion of the arm at the glenohumeral joint
B)flexion of the forearm at the elbow joint
C)extension of the hand at the wrist joint
D)pronation of the forearm at the radioulnar joints

Question 47

The muscles of the anterior forearm are usually innervated by what nerve?

A)median nerve
B)axillary nerve
C)radial nerve
D)ulnar nerve

Question 48

What are the names of the two heads of the extensor carpi ulnaris?

A)medial head and lateral head
B)long head and short head
C)radial head and ulnar head
D)ulnar head and humeral head

Question 49

Irritation and inflammation of the medial epicondyle of the humerus and/or the common flexor tendon is usually called

A)lateral epicondylitis,lateral epicondylosis,or tennis elbow.
B)lateral epicondylitis,lateral epicondylosis,or golfer's elbow.
C)medial epicondylitis,medial epicondylosis,or pitcher's shoulder.
D)medial epicondylitis,medial epicondylosis,or golfer's elbow.

Question 50

The muscles of the wrist flexor group are principally innervated by what nerve?

A)median nerve
B)axillary nerve
C)radial nerve
D)ulnar nerve

Question 51

The muscles of the wrist extensor group are innervated by what nerve?

A)median nerve
B)axillary nerve
C)radial nerve
D)ulnar nerve

Question 52

What are the three muscles of the "wrist flexor group"?

A)pronator teres,flexor carpi radialis,and flexor carpi ulnaris
B)flexor carpi radialis,flexor carpi ulnaris,and palmaris longus
C)flexor carpi radialis,extensor carpi radialis longus,and extensor carpi radialis brevis
D)extensor carpi radialis longus,extensor carpi radialis brevis,and extensor carpi ulnaris

Question 53

What nerve innervates the extensor carpi ulnaris?

A)median nerve
B)axillary nerve
C)radial nerve
D)ulnar nerve

Question 54

Irritation and inflammation of the lateral epicondyle of the humerus and/or the common extensor tendon is usually called

A)lateral epicondylitis,lateral epicondylosis,or tennis elbow.
B)lateral epicondylitis,lateral epicondylosis,or golfer's elbow.
C)medial epicondylitis,medial epicondylosis,or pitcher's shoulder.
D)medial epicondylitis,medial epicondylosis,or golfer's elbow.

Question 55

The muscles of the posterior forearm are usually innervated by what nerve?

A)median nerve
B)axillary nerve
C)radial nerve
D)ulnar nerve

Question 56

Which muscle of the wrist flexor group has two heads proximally?

A)flexor carpi radialis
B)palmaris longus
C)flexor carpi ulnaris
D)none of the above

Question 57

What three muscles comprise the "radial group" of forearm muscles?

A)extensor carpi radialis longus,extensor carpi radialis brevis,and extensor carpi ulnaris
B)extensor carpi radialis longus,extensor carpi radialis brevis,and flexor carpi ulnaris
C)brachioradialis,extensor carpi radialis longus,and extensor carpi radialis brevis
D)brachioradialis,brachialis,and biceps brachii