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Anatomy Exam 4 > The Forearm > Flashcards

The Forearm Flashcards

1
Q

Which bone of forearm is on medial side?

A

ulna

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2
Q

Which bone of forearm is on distal side?

A

Radius

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3
Q

The ___ of the humerus is the common flexor origin

A

medial epicondyle of humerus

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4
Q

The ___ of the humerus is the common extensor origin

A

lateral epicondyle of humerus

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5
Q

The ___ of the humerus articulates with the ulna

A

Trochlea

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6
Q

The ___ of the humerus articulates with the radius

A

capitulum

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7
Q

The ___ position of forearm is anatomical position

A

supinated

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8
Q

The ___ position is how we naturally tend to hold our forearm

A

pronated

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9
Q

______ surrounds and invests the forearm and is continuous with the brachial fascia of the arm.

A

Antebrachial fascia

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10
Q

What 3 nerves provides cutaneous innervation of forearm?

A

Musculocutaneous, medial antebrachial cutaneous, and radial n

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11
Q

Superior ulnar collateral artery anastomoses with _____ artery

A

posterior ulnar recurrent artery

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12
Q

Inferior ulnar collateral artery anastomoses with ___ artery

A

anterior ulnar recurrent artery

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13
Q

Radial collateral artery anastomoses with ___ artery

A

radial recurrent artery

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14
Q

Middle collateral artery anastomoses with ___ artery

A

interosseous recurrent artery

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15
Q

How many superficial muscles are there in the anterior forearm?

A

4

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16
Q

How many intermediate muscles are found in the anterior forearm?

A

1

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17
Q

How many deep muscles are found in the anterior forearm?

A

3

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18
Q

What are the superficial muscles of the anterior forearm?

A

Palmaris longus, pronator teres, flexor carpi radialis, and flexor carpi ulnaris

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19
Q

Proximal Attachment:-medial epicondyle of humerus

Distal Attachment:-flexor retinaculum; continuous with palmar aponeurosis

A

Palmaris longus

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20
Q

Proximal Attachment:-coronoid process of ulna

Distal Attachment:-middle of lateral surface of radius

A

Pronator teres

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21
Q

Proximal Attachment:-medial epicondyle of humerus(“common flexor origin”)
Distal Attachment:-base of 2nd metacarpal

A

Flexor carpi radialis

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22
Q

What muscles are part of the intermediate layer of anterior forearm?

A

Flexor digitorum superficialis

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23
Q

Proximal Attachment:-medial epicondyle of humerus (humeral head)-Olecranon and posterior border of ulna (ulnar head)
Distal Attachment:-pisiform, hook of hamate, 5th metacarpal

A

Flexor carpi ulnaris

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24
Q

Proximal Attachment:-medial epicondyle of humerus, superior½ of anterior border of radius
Distal Attachment:-shafts of middle phalanges of medial 4 digits

A

Flexor digitorum superficialis

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25
Q

What muscles are part of the deep layer of anterior forearm?

A

Flexor digitorum profundus, flexor pollicis longus, and pronator quadratus

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26
Q

Proximal Attachment:-proximal ¾ of medial and anterior surfaces of ulna and interosseous membrane
Distal Attachment:-bases of distal phalanges of 2nd-5th fingers

A

Flexor digitorum profundus

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27
Q

Proximal Attachment:-anterior surface of radius and interosseous membrane
Distal Attachment:-base of distal phalanx of thumb

A

Flexor pollicis longus

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28
Q

Proximal Attachment:-distal ¼ of anterior surface of ulna
Distal Attachment:-distal ¼ of anterior surface of radius
Actions:-pronates forearm, deep fibers bind radius & ulna together
Innervation:-median nerve via anterior interosseous nerve

A

Pronator quadratus

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29
Q

How many muscles are there in the superficial layer of posterior forearm?

A

6

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30
Q

How many muscles are there in the deep layer of posterior forearm?

A

5

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31
Q

Which muscle of the forearm is in the posterior compartment but functions to flex the elbow?

A

Brachioradialis

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32
Q

brachioradialis(flexes elbow joint), extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris are part of the _____ layer of the posterior forearm

A

superficial

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33
Q

ALL muscles of the posterior forearm are innervated by the _____ nerve via the deep branch of the radial nerve or the posterior interosseous nerve.

A

radial nerve

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34
Q

ALL muscles of the posterior forearm are innervated by the radial nerve via the ____ branch of the radial nerve or the ______ nerve.

A

deep branch; posterior interosseous

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35
Q

_____ branch of radial nerve (lateral, runs beneath brachioradialis) provides CUTANEOUS innervation ONLY (no motor branches) in posterior forearm

A

Superficial branch

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36
Q

Deep branch of radial nerve becomes ____ nerve

A

posterior interosseous nerve

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37
Q

Proximal Attachment:-proximal 2/3 of supraepicondylar ridge of humerus
Distal Attachment:-distal radius, proximal to styloid process

A

Brachioradialis

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38
Q

Proximal Attachment:-lateral supracondylar ridge of humerus

Distal Attachment:-dorsal aspect of base of 2nd metacarpal

A

Extensor carpi radialis longus

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39
Q

Proximal Attachment:-lateral epicondyle of humerus(common extensor origin)
Distal Attachment:-dorsal aspect of base of 3rd metacarpal

A

Extensor carpi radialis brevis

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40
Q

Proximal Attachment:-lateral epicondyle of humerus and posterior border of ulna
Distal Attachment:-dorsal aspect of base fo 5th metacarpal

A

Extensor carpi ulnaris

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41
Q

Proximal Attachment:-lateral epicondyle of humerus(common extensor origin)
Distal Attachment:-extensor expansions of medial 4 fingers

A

Extensor digitorum

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42
Q

Proximal Attachment:-lateral epicondyle of humerus(common extensor origin)
Distal Attachment:-extensor expansion of 5th finger

A

Extensor digiti minimi

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43
Q

tendons of extensor digitorum form a dorsal expansion over the metacarpophalangeal (MP) and interphalangeal (IP) joints called the ____ and _____

A

extensor expansion and extensor hood

44
Q

supinator, extensor indicis, abductor pollicis longus, extensor pollicis longus, and extensor pollicis brevis are all part of the ___ layer of the posterior forearm

A

deep layer

45
Q

abductor pollicis longus, extensor pollicis longus, and extensor pollicis brevis are considered the ____ muscles of the forearm

A

“outcropping” muscles

46
Q

ALL of the deep layer of the posterior forearm are innervated by the deep branch of the ___ nerve, or the _____ nerve, which is the continuation of this same nerve.

A

radial nerve; posterior interosseous

47
Q

Proximal Attachment:-lateral epicondyle of humerus, radial collateral & anular ligaments, ulnar crest
Distal Attachment:-proximal 1/3 of radius (nearly all surfaces,as it wraps around the bone)

A

Supinator

48
Q

Proximal Attachment:-posterior surface of distal 1/3 of ulna and interosseous membrane
Distal Attachment:-extensor expansion of 2nd finger

A

Extensor indicis

49
Q

Proximal Attachment:-posterior surface of proximal ½ of ulna and radius,interosseous membrane
Distal Attachment:-base of 1st metacarpal

A

Abductor pollicis longus

50
Q

Proximal Attachment:-posterior surface of distal 1/3 of radius,interosseous membrane
Distal Attachment:-dorsal aspect of proximal phalanx of thumb

A

Extensor pollicis brevis

51
Q

Proximal Attachment:-posterior surface of middle 1/3 of ulna,interosseous membrane
Distal Attachment:-dorsal aspect of base of distal phalanx of thumb

A

Extensor pollicis longus

52
Q

What are the anatomical relationships of the forearm from lateral to medial in regard to nerves and arteries

A

Superficial branch of the Radial nerve, Radial artery, Median Nerve, Ulnar Artery, Ulnar Nerve

53
Q

The ulnar nerve runs ____ to the medial epicondyle

A

posterior

54
Q

The ulnar nerve Runs along the medial forearm under what muscle?

A

flexor carpi ulnaris

55
Q

Ulnar nerve Goes through ____ lateral to the ____ bone (this is a fascial compartment)

A

Guyon’s canal; pisiform

56
Q

____ nerve Enters the hand and supplies most of the intrinsic muscles of the hand

A

Ulnar nerve

57
Q

T/F: Ulnar nerve and ulnar artery Run together

A

True

58
Q

Ulnar nerve is ___ to the ulnar artery

A

medial

59
Q

____ artery is Located under flexor carpi ulnaris or just lateral to it

A

ulnar artery

60
Q

ulnar artery and nerve run ___ to pisiform bone and Guyon’s canal

A

lateral

61
Q

___ nerve runs through pronator teres

A

Median nerve

62
Q

____ nerve runs deep to flexor digitorum superficialis

A

median

63
Q

___ nerve runs between flexor digitorum superficialis and flexor digitorum profundus

A

Median

64
Q

____ nerve runs deep to flexor retinaculum through carpal tunnel

A

Median nerve

65
Q

____ artery Located under flexor carpi ulnaris or just lateral to it

A

ulnar artery

66
Q

ulnar artery and ULNAR nerve run ___ to pisiform bone and Guyon’s canal

A

lateral

67
Q

radial artery is ____ to the superficial branch of the radial nerves

A

medial

68
Q

_____ artery is Under brachioradialis or just medial to it

A

radial

69
Q

Anterior interosseous nerve & anterior interosseous artery run ____ to the pronator quadratus muscle

A

deep

70
Q

Actions:-flexes hand at wrist, tenses palmar aponeurosis

A

Palmaris longus

71
Q

Palmaris longus is innervated by ____ nerve

A

median

72
Q

Actions:-pronates and flexes forearm at elbow

A

Pronator teres

73
Q

Innervation of pronator teres is ___ nerve

A

Median nerve

74
Q

Actions:-flexes and abducts hand at wrist

A

Flexor Carpi radialis

75
Q

Innervation of flexor carpi radialis is from ____ nerve

A

Median nerve

76
Q

Actions:-flexes and adducts hand at wrist

A

Flexor Carpi Ulnaris

77
Q

Innervation of Flexor Carpi Ulnaris is from ____ nerve

A

Ulnar nerve

78
Q

Actions:-flexes middle phalanges at proximal interphalangeal joint, flexes proximal phalanges at metacarpophalangeal joints

A

Flexor Digitorum Superficialis

79
Q

Innervation of Flexor Digitorum Superficialis is from ____ nerve

A

median nerve

80
Q

Actions:-flexes distal phalanges at interphalangeal joints (power grip)

A

Flexor digitorum profundus

81
Q

Innervation of Flexor digitorum profundus

A

median* & ulnar nerves

- *anterior interosseous nerve branch from median nerve

82
Q

Actions:-flexes thumb

A

Flexor pollicis longus

83
Q

Innervation of Flexor pollicis longus is from ____ nerve via _____

A

median nerve via anterior interosseous nerve (C8, T1)

84
Q

Actions:-flexes forearm when it is pronated (about midprone position)

A

Brachioradialis

85
Q

Innervation of Brachioradialis is from ____ nerve

A

radial nerve

86
Q

Actions:-supinates forearm, bringing radius back to anatomical position

A

Supinator

87
Q

Innervation of Supinator is from deep branch of ____ nerve

A

deep branch of radial nerve

88
Q

Actions:-extend and abduct hand at wrist.

A

Extensor carpi radialis longus

89
Q

Innervation of Extensor carpi radialis longus is from ____ nerve

A

Radial nerve

90
Q

Actions:-extend and abduct hand at wrist

A

Extensor carpi radialis brevis

91
Q

Innervation of Extensor carpi radialis brevis is from deep branch of _____ nerve

A

radial nerve

92
Q

Actions:-extends and adducts hand at wrist

A

Extensor carpi ulnaris

93
Q

Innervation of Extensor carpi ulnaris is ______ nerve

A

posterior interosseous nerve (remember that this nerve is the continuation of the deep branch of the radial nerve)

94
Q

Actions:-extends medial 4 fingers at metacarpophalangeal joints and somewhat at interphalangeal joints

A

Extensor digitorum

95
Q

Innervation of Extensor digitorum is from ____ nerve

A

posterior interosseous nerve (remember that this nerve is the continuation of the deep branch of the radial nerve)

96
Q

Actions:-extends 5th finger at metacarpophalangeal joint and secondarily at interphalangeal joints

A

Extensor digiti minimi

97
Q

Innervation of Extensor digiti minimi is from ____ nerve

A

posterior interosseous nerve(remember that this nerve is the continuation of the deep branch of the radial nerve)

98
Q

Actions:-independent extension of 2nd finger, but also helps with extension of wrist

A

Extensor indicis

99
Q

Innervation of Extensor indicis is from ____ nerve

A

posterior interosseous nerve (remember that this nerve is the continuation of the deep branch of the radial nerve)

100
Q

Actions:-abducts thumb and extends it at carpometacarpal joint

A

Abductor pollicis longus

101
Q

Innervation of Abductor pollicis longus from ___ nerve

A

posterior interosseous nerve(remember that this nerve is the continuation of the deep branch of the radial nerve)

102
Q

Actions:-extends proximal phalanx of thumb at its metacarpophalangeal joint, also extends carpometacarpal joint

A

Extensor pollicis brevis

103
Q

Innervation of Extensor pollicis brevis is from ____ nerve

A

posterior interosseous nerve(remember that this nerve is the continuation of the deep branch of the radial nerve)

104
Q

Actions:-extends distal phalanx of thumb at its interphalangeal joint and extends the metacarpophalangeal and carpometacarpal joint

A

Extensor pollicis longus

105
Q

Innervation of Extensor pollicis longus is from ____ nerve

A

posterior interosseous nerve(remember that this nerve is the continuation of the deep branch of the radial nerve)

Anatomy Exam 4 (9 decks)

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