Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

SHB > 9.27.16 Forearm > Flashcards

9.27.16 Forearm Flashcards

1
Q

The deep fascia of the forearm (antebrachial fascia) is a continuation of the ___ from the arm. Distally, the antebrachial fascia will thicken and form the ___.

A

Brachial fascia; flexor and extensor retinacula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What extends obliquely across the posterior radiocarpal joint from the anterior border of the distal radius to the triquetrum and pisiform bones?

A

Extensor retinaculum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is also called the transverse carpal ligament?

A

Flexor retinaculum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is attached medially to the pisiform and the hook of the hamate, and laterally to the trapezium and scaphoid bones of the wrist?

A

Flexor retinaculum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The flexor retinaculum forms what two things?

A

The carpal tunnel and the canal of Guyon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the superficial muscles of the anterior forearm?

A
  1. Pronator teres
  2. Flexor carpi radialis
  3. Palmaris longus
  4. Flexor digitorum superficialis
  5. Flexor carpi ulnaris
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the origin and insertion of pronator teres?

A

Origin: two heads - medial epicondyle of humerus and coronoid process of ulna.
Insertion: Midway along lateral surface of radius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What innervates pronator teres?

A

Median nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the function of pronator teres?

A

Pronates forearm and assists with elbow flexion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What supplies pronator teres?

A

Anterior ulnar recurrent artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the origin and insertion of flexor carpi radialis?

A

Origin: medial epicondyle of humerus
Insertion: base of 2nd metacarpal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What innervates flexor carpi radialis?

A

Median nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the function of flexor carpi radialis?

A

Flexes and abducts hand at wrist

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What supplies flexor carpi radialis?

A

Radial artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the origin and insertion of palmaris longus?

A

Origin: medial epicondyle of humerus
Insertion: distal half of flexor retinaculum and palmar aponeurosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What innervates palmaris longus?

A

Median nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the function of palmaris longus?

A

Flexes hand at wrist and tenses palmar aponeurosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What supplies palmaris longus?

A

Posterior ulnar recurrent artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the origin and insertion of flexor digitorum superficialis?

A

Origin of humero-ulnar head: medial epicondyle of humerus and coronoid process of ulna
Origin of radial head: superior half of anterior radius
Insertion: Bodies of middle phalanges of medial four digits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What innervates flexor digitorum superficialis?

A

Median nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the function of flexor digitorum superficialis?

A

Flexes middle and proximal phalanges of medial four digits, flexes hand at wrist

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What supplies flexor digitorum superficials?

A

Ulnar and radial arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the origin and insertion of flexor carpi ulnaris?

A

Origin of humeral head: medial epicondyle of humerus
Origin of ulnar head: olecranon and posterior border of ulna
Insertion: pisiform bone, hook of hamate, base of 5th metacarpal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What innervates flexor carpi ulnaris?

A

Ulnar nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the function of flexor carpi ulnaris?

A

Flexes and adducts hand at wrist

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What supplies flexor carpi ulnaris?

A

Posterior ulnar recurrent artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

The tendons of flexor digitorum superficialis split and insert onto ___; this allows tendons of FDP to pass through to the ___.

A

Middle phalynx; Distal phalynx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What are the deep muscles of the anterior forearm?

A
  1. Flexor digitorum profundus
  2. Flexor pollicis longus
  3. Pronator quadratus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What is the origin and insertion of flexor digitorum profundus?

A

Origin: Medial and anterior surface of proximal 3/4 of ulna and interosseous membrane
Insertion: Palmar base of distal phalanges of medial four digits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What innervates flexor digitorum profundus?

A

Medial part: ulnar nerve

Lateral part: median nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What is the function of flexor digitorum profundus?

A

Flexes distal phalanges of medial four digits, assists with flexion of hand at wrist

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

What supplies flexor digitorum profundus?

A

Anterior interosseous artery, muscular branches of ulnar artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What is the origin and insertion of flexor pollicis longus?

A

Origin: anterior surface of radius and interosseous membrane
Insertion: palmar base of distal phalanx of thumb

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What innervates flexor pollicis longus?

A

Median nerve (anterior interosseous)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

What is the function of flexor pollicis longus?

A

Flexes phalanges of thumb

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

What supplies flexor pollicis longus?

A

Anterior interosseous artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

What is the origin and insertion of pronator quadratus?

A

Origin: distal fourth of anterior ulna
Insertion: Distal fourth of anterior radius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

What innervates pronator quadratus?

A

Median nerve (anterior interosseous)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

What is the function of pronator quadratus?

A

Pronates forearm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

What supplies pronator quadratus?

A

Anterior interosseous artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

The tendons of the flexor digitorum profoundus pass under/through the tendons of the FDS and isnert onto the ___.

A

Distal phalynx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

What are the superficial muscles of the posterior forearm?

A
  1. Brachioradialis
  2. Anconeus
  3. Extensor carpi radialis longus
  4. Extensor capri radialis brevis
  5. Extensor digitorum
  6. Extensor digiti minimi
  7. Extensor carpi ulnaris
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

The muscles of the posterior forearm are all innervated by a branch of the ___.

A

Radial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

What is the origin and insertion of brachioradialis?

A

Origin: proximal 2/3 of lateral supracondylar ridge of humerus
Insertion: lateral side of distal end of radius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

What innervates brachioradialis?

A

Radial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

What is the function of brachioradialis?

A

Weak flexion of forearm when forearm is midpronated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

What supplies brachioradialis?

A

Radial recurrent artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

What is the origin and insertion of anconeus?

A

Origin: posterior surface of lateral epicondyle of humerus
Insertion: lateral surface of olecranon and posterior proximal ulna

49
Q

What innervates anconeus?

A

Radial nerve (C5-T1)

50
Q

What is the function of anconeus?

A

Assists triceps in extending elbow, abducts ulna in pronation

51
Q

What supplies anconeus?

A

Deep brachial artery

52
Q

What is the origin and insertion of extensor carpi radialis longus?

A

Origin: distal third of lateral supracondylar ridge of humerus
Insertion: dorsal base of 2nd metacarpal and slip to 3rd metacarpal

53
Q

What innervates extensor carpi radialis longus?

A

Radial nerve

54
Q

What is the function of extensor carpi radialis longus?

A

Extends and abducts hand at wrist

55
Q

What supplies extensor carpi radialis longus?

A

Radial artery, radial recurrent artery

56
Q

What is the origin and insertion of extensor carpi radialis brevis?

A

Origin: lateral epicondyle of humerus
Insertion: dorsal base of 3rd metacarpal and slip to 2nd metacarpal

57
Q

What innervates extensor carpi radialis brevis?

A

Radial nerve (deep branch)

58
Q

What is the function of extensor carpi radialis brevis?

A

Extends and abducts hand at wrist

59
Q

What supplies the function of extensor carpi radialis brevis?

A

Radial artery, radial recurrent artery

60
Q

What is the origin and insertion of extensor digitorum?

A

Origin: lateral epicondyle of humerus
Insertion: extensor expansions of medial four digits

61
Q

What innervates extensor digitorum?

A

Radial nerve (posterior interosseous)

62
Q

What is the function of extensor digitorum?

A

Extends medial four digits, assists in wrist extension

63
Q

What supplies extensor digitorum?

A

Posterior interosseous artery

64
Q

What is the origin and insertion of extensor digiti minimi?

A

Origin: lateral epicondyle of humerus
Insertion: extensor expansion of 5th digit

65
Q

What innervates extensor digiti minimi?

A

Radial nerve (posterior interosseous)

66
Q

What is the function of extensor digiti minimi?

A

Extends 5th digit

67
Q

What supplies extensor digiti minimi?

A

Posterior interosseous artery

68
Q

What is the origin and insertion of extensor carpi ulnaris?

A

Origin: lateral epicondyle of humerus and posterior border of ulna
Insertion: dorsal base of 5th metacarpal

69
Q

What innervates extensor carpi ulnaris?

A

Radial nerve (posterior interosseous)

70
Q

What is the function of extensor carpi ulnaris?

A

Extends and adducts hand at wrist

71
Q

What supplies extensor carpi ulnaris?

A

Posterior interosseous artery

72
Q

What are the deep muscles of the posterior forearm?

A
  1. Abductor pollicis longus
  2. Extensor pollicis longus
  3. Extensor pollicis brevis
  4. Supinator
  5. Extensor indicis
73
Q

What is the origin and insertion of abductor pollicis longus?

A

Origin: Posterior surface of ulna, radius, and interosseous membrane
Insertion: base of 1st metacarpal

74
Q

What innervates abductor pollicis longus?

A

Radial nerve (posterior interosseous)

75
Q

What is the function of abductor pollicis longus?

A

Abducts and extends thumb at carpometacarpal joint

76
Q

What supplies abductor pollicis longus?

A

Posterior interosseous artery

77
Q

What is the origin and insertion of extensor pollicis longus?

A

Origin: posterior surface of middle third of ulna, interosseous membrane
Insertion: dorsal base of distal phalanx of thumb

78
Q

What innervates extensor pollicis longus?

A

Radial nerve (posterior interosseous)

79
Q

What is the function of extensor pollicis longus?

A

Extends distal phalanx of thumb at interphalangeal and metacrapophalangeal joints

80
Q

What supplies extensor pollicis longus?

A

Posterior interosseous artery

81
Q

What is the origin and insertion of extensor pollicis brevis?

A

Origin: posterior surface of radius and interosseous membrane
Insertion: dorsal base of proximal phalanx of thumb

82
Q

What innervates extensor pollicis brevis?

A

Radial nerve (posterior interosseous)

83
Q

What is the function of extensor pollicis brevis?

A

Extends proximal phalanx of thumb at carpometacarpal joint

84
Q

What supplies extensor pollicis brevis?

A

Posterior interosseous artery

85
Q

What is the origin and insertion of supinator?

A

Origin: lateral epicondyle of humerus, supinator crest of ulna
Insertion: lateral, posterior, and anterior surfaces of proximal third of radius

86
Q

What innervates supinator?

A

Radial nerve (deep branch)

87
Q

What is the function of supinator?

A

Supinates forearm

88
Q

What supplies supinator?

A

Radial recurrent artery, posterior interosseous arteries

89
Q

What is the origin and insertion of extensor indicis?

A

Origin: posterior surface of ulna and interosseous membrane
Insertion: extensor expansion of 2nd digit

90
Q

What innervates extensor indicis?

A

Radial nerve (posterior interosseous)

91
Q

What is the function of extensor indicis?

A

Extends 2nd digit and helps extend hand at wrist

92
Q

What supplies extensor indicids?

A

Posterior interosseous artery

93
Q

What are the two pronators?

A

Pronator teres and pronator quadratus

94
Q

What forms the anatomical snuff box?

A

Abductor pollicis longus and extensor pollicis brevis tendons laterally, and extensor pollicis longus tendon medially

95
Q

___ runs through the floor of the anatomical snuff box. Branches of ___ run across the roof.

A

Radial artery; superficial radial nerve

96
Q

What muscles are found within the anatomical snuff box?

A

Scaphoid and trapezium

97
Q

What is the continuation of the axillary artery at the inferior border of the teres major muscle? It terminates in the distal end of the cubital fossa where it divides into what two arteries?

A

Brachial; radial and ulnar

98
Q

The ___ is one of two terminal branches of the brachial artery. It extends from the neck of the radius to the medial side of the styloid process. It lies deep to the brachioradialis muscle, but becomes superficial in the distal 1/3 of the arm.

A

Radial artery

99
Q

What is the other terminal branch of the brachial artery that extends from the neck of the radius to the flexor retinaculum on the medial edge of the wrist. It runs deep to superficial flexors in the forearm. It runs with the ulnar nerve in the distal half of the forearm, and enters the hand via the canal of Guyon with the ulnar nerve. It can be palpated just lateral to the tendon of FCU. This gives off the common interosseous artery in the cubital fossa

A

Ulnar artery

100
Q

What is a short trunk off of the ulnar artery extending laterally?

A

Common interosseous artery

101
Q

Describe the path of the anterior interosseus.

A

Travels down the forearm superficial to the interosseous membrane, pierces the interosseous membrane distally to anastamose with posterior interosseous artery, continues under pronator quadratus muscle to the palmar carpal network.

102
Q

Describe the path of posterior interosseous.

A

Passes immediately deep to the interosseous membrane to supply the posterior forearm between the superficial and deep groups of muscles

103
Q

The median nerve enters the forearm between the heads of ___.

A

Pronator teres muscle

104
Q

What does the median nerve innervate in the forearm?

A

Pronator teres, flexor carpi radialis, palmaris longus, flexor digitorum superficialis

105
Q

The median nerve gives of the ___ branch within the pronator teres muscle which supplies the deep flexors - name these.

A

Anterior interosseous; flexor pollicis longus, pronator quadratus, radial 1/2 of flexor digitorum profundus

106
Q

The median nerve lies deep to the ___ as it continues distally and becomes superficial in the ___.

A

Flexor digitorum superficialis; distal forearm

107
Q

The median nerve can be found between the tendons of what two muscles?

A

Flexor digitorum superficialis and flexor carpi radialis

108
Q

The median nerve passes deep and medial to the ___ tendon, where it enters the ___ deep to the flexor retinaculum

A

Palmaris longus; flexor retinaculum

109
Q

The median nerve then supplies what three muscles in the hand?

A

Thenar muscles, 1st lumbrical, 2nd lumbrical

110
Q

Finally, the median nerve gives off ___ branch to skin of the palm.

A

Palmar

111
Q

The ulnar nerve enters the forearm behind the ___ and pierces the flexor carpi ulnaris muscle, continues deep to ___ and then travels with the ___ artery to the wrist.

A

Medial epicondyle; flexor digitorum superficialis; ulnar

112
Q

Then, the ulnar nerve enters the hand deep to the ___ ligament but superficial to the flexor retinaculum (transverse carpal ligament) in the ___ with the ulnar artery.

A

Palmar carpal; Canal of Guyon

113
Q

The radial nerve divides into superficial and deep branches as it lies between what two muscles?

A

Brachialis and brachioradialis

114
Q

Describe the path of the superficial branch of the radial nerve.

A

Runs deep to the brachioradialis muscle just lateral to the radial artery; in the distal 1/3 of the forearm, it crosses to the dorsum. It is seen crossing the top of the anatomical snuffbox, and is cutaneous to the dorsum of the hand and radial 2.5 digits

115
Q

Describe the path of the deep branch of the radial nerve.

A

Passes through supinator to innervate posterior forearm extensor muscles

116
Q

What innervates all of the muscles of the posterior forearm?

A

Radial nerve

117
Q

What innervates the flexor carpi ulnaris muscle and the medial 1/2 of the flexor digitorum profundus muscle?

A

Ulnar nerve

118
Q

What innervates a majority of the muscles in the anterior compartment of the forearm?

A

Median nerve

SHB (36 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions