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MSK I muscles > MSK I upper limb > Flashcards

MSK I upper limb Flashcards

1
Q

Deltopectoral groove location

A

between the deltoid and the pectoralis major

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2
Q

What makes the deltopectoral triangle

A

clavicle, deltoid and pectoralis major

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3
Q

Mammary gland perfusion

A

lateral and medial mammary artery and veins

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4
Q

Mammary gland innervation

A

lateral and anterior cutaneous branches of intercostal muscles 4-6

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5
Q

mammary gland lymphatic drainage

A

predominantly go to the axillary lymph nodes but can also go to parasternal lymph nodes

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6
Q

Pectoralis major origin

A

medial inferior border of clavicle, manubrium, sternum, costal cartilages of ribs 1-6, external abdominal oblique aponeurosis

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7
Q

pectoralis major insertion

A

lateral lip of the intertubercular groove of the humerus

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8
Q

pectoralis major action

A

adduction & medial rotation of the humerus, clavicular head flexes the humerus

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9
Q

pectoralis major innervation

A

medial pectoral nerve c8 and t1, and lateral pectoral nerve c5, c6, c7

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10
Q

Pectoralis minor origin

A

outer surface of ribs 3-5

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11
Q

pectoralis minor insertion

A

coracoid process of the scapula

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12
Q

pectoralis minor action

A

protraction and depression of the scapula , also accessory muscle for respiration

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13
Q

pectoralis minor innervation

A

medial pectoral nerve c8 t1

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14
Q

Subclavius origin

A

upper border of 1st rib and costal cartilage

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15
Q

Subclavius insertion

A

inferior surface of the clavicle

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16
Q

subclavius action

A

anchors and depresses clavicle

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17
Q

subclavius innervation

A

nerve to subclavius c5, c6

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18
Q

structures that penetrate the costocoracoid membrane

A

cephalic vein, thoracoacromial trunk, and lateral pectoral nerve

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19
Q

Apex of Axillary boundary aka cervicaxillary canal

A

between clavicle, superior scapula and the 1st rib

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20
Q

Medial wall of axillary boundary

A

border is the rib at that level and the muscles that cover those ribs

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21
Q

Lateral wall of axillary boundary

A

lateral wall of the intertubercular grove

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22
Q

anterior wall of the axillary boundary

A

pectoralis major, pectoralis minor and the clavipectoral fascia

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23
Q

Posterior wall of the axillary boundary

A

teres major, latissimus dorsi, subscapularis and scapula

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24
Q

base of axillary boundary

A

skin and axillary fascia held in place by the suspensory ligament

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25
Q

Brachiochephalic artery branches into

A

right subclavian cartery and right common carotid artery

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26
Q

Right subclavian artery branches into

A

Vertebral artery, thyrocervical trunk, and internal thoracic artery

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27
Q

Rotator cuff action

A

Rotate humerus and hold it in the glenoid during movements

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28
Q

Quadrangular space borders

A

Inferior- teres major
Lateral- surgical neck of the humerus
Medial- long head of triceps
Superior- teres minor

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29
Q

Triangular space borders

A

Inferior- teres major
lateral- long head triceps
superior- teres minor

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30
Q

Runs through the triangular space

A

circumflex scapular artery

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31
Q

Runs through the triangular space

A

circumflex scapular artery

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32
Q

Runs through radial groove of humerus

A

radial nerve and deep brachial artery

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33
Q

Borders of cubital fossa

A

superior- imaginary line between condyles, lateral- Brachioradialis, medial- pronator teres, roof- deep fascia of arm/forearm and bicpital aponeuroses, floor- brachialis and supinator

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34
Q

Deltoid origin

A

anterior- lateral 3rd of clavicle, middle- acromion, posterior- scapular spine

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35
Q

Deltoid insertion

A

deltoid tuberosity

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36
Q

deltoid innervation

A

axillary nerve c5, c6

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37
Q

deltoid action

A

anterior/clavicular- flexion of shoulder, medial rotation of humerus/arm, middle/acromion- last 85 degrees of abduction of the arm, posterior/spinous- extension of the shoulder, lateral rotation of the humerus/arm

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38
Q

Supraspinatus origin

A

supraspinous fossa

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39
Q

supraspinatus insertion

A

superior facet of greater tubercle

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40
Q

supraspinatus innervation

A

suprascapular nerve c4, c5, c6

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41
Q

supraspinatus action

A

first 15 degrees of abduction, acts with rotator cuff

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42
Q

infraspinatus origin

A

infraspinous fossa

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43
Q

infraspinatus insertion

A

middle face of greater tubercle

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44
Q

infraspinatus action

A

lateral rotation of humerus, abduction, acts with rotator cuff

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45
Q

subscapularis origin

A

subscapular fossa

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46
Q

subscapularis insertion

A

lesser tubercle of humerus

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47
Q

subscapularis innervation

A

Upper C5 and lower C6 subscapular nerves

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48
Q

subscapular action

A

medial rotation of the humerus, abduction, acts with rotator cuff

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49
Q

infraspinatus innervation

A

suprascapular nerve C5, C6

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50
Q

Teres minor origin

A

middle part of lateral border of scapula

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51
Q

Teres minor insertion

A

inferior facet of the greater tubercle

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52
Q

Teres minor innervation

A

axillary nerve c5 c6

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53
Q

teres minor action

A

lateral rotation of humerus, abduction, acts with rotator cuff

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54
Q

teres major origin

A

posterior aspect of the inferior angle of scapula

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55
Q

teres major insertion

A

medial lip of intertubercle groove

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56
Q

teres major innervation

A

lower subscapular nerve c5, c6

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57
Q

teres major action

A

adduction and medial rotation

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58
Q

Serratus anterior origin

A

medial border of the scapula

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59
Q

Serratus anterior insertion

A

external surface of ribs 1-9

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60
Q

Serratus anterior innervation

A

long thoracic nerve c5, c6, c7

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61
Q

Serratus anterior action

A

protraction of scapula, prevents winging of scapula

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62
Q

Biceps brachii origin

A

long head- supraglenoid tubercle, short head- coracoid process

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63
Q

Biceps brachii insertion

A

radial tuberosity and forearm fascia via bicipital aponeurosis

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64
Q

Biceps brachii innervation

A

musculocutaneous nerve c5, c6, c7

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65
Q

biceps brachii action

A

flexion of forearm

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66
Q

Triceps brachii origin

A

long head- infraglenoid tubercle, medial head- distal 2/3 of posteromedial humerus, lateral head- upper half of the posterior humerus

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67
Q

triceps brachii insertion

A

proximal olecranon process and forearm fascia

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68
Q

triceps brachii innervation

A

radial nerve c6, c7, c8

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69
Q

triceps brachi action

A

resist dislocation of glenohumeral joint, forearm extension

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70
Q

Coracobrachialis origin

A

coracoid process

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71
Q

coracobrachialis insertion

A

middle 3rd of the medial humeral shaft

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72
Q

coracobrachialis innervation

A

musculocutaneous nerve c5, c6, c7

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73
Q

coracobrachialis action

A

flexion and adduction of the arm at the shoulder, resists dislocation of the glenohumeral joint

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74
Q

brachialis origin

A

distal half of humeral shaft

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75
Q

brachialis insertion

A

coronoid process and ulnar tuberosity

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76
Q

brachialis innervation

A

musculocutaneous nerve c5, c6 and radial nerve c5, c7

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77
Q

brachialis action

A

flexion of forearm

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78
Q

anconeus origin

A

posterior aspect of lateral epicondyle of the humerus

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79
Q

anconeus insertion

A

posterolateral olecranon process

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80
Q

anconeus innervation

A

radial nerve c7,c8, T1

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81
Q

anconeus action

A

weak forearm extension, stabilizes elbow joint, abduction of ulna during pronation

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82
Q

Pronator teres origin

A

humeral head- medial epicondyle by common flexor tendon, ulnar head- coronoid process of the ulna

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83
Q

pronator teres insertion

A

Lateral surface of middle portion of shaft of radius

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84
Q

pronator teres innervation

A

median nerve

85
Q

Pronator teres action

A

pronates the hand and slightly flexes the forearm

86
Q

Flexor carpi radialis origin

A

medial epicondyle of humerus by common flexor tendon

87
Q

flexor carpi radialis insertion

A

base of 2nd and 3rd metacarpal

88
Q

Flexor carpi radialis innervation

A

median nerve

89
Q

flexor carpi radialis action

A

flexes wrist, abducts hand

90
Q

Palmaris longus origin

A

medial epicondyle of humerus by common flexor tendon

91
Q

palmaris longus insertion

A

palmar aponeurosis

92
Q

palmaris longus innervation

A

median nerve

93
Q

palmaris longus action

A

flexes wrist

94
Q

Flexor carpi ulnaris origin

A

humeral head- medial epicondyle of humerus, ulnar head- medial border of olecranon process and proximal dorsal surface of the ulna

95
Q

Flexor carpi ulnaris insertion

A

pisiform, hamulus of the hamate and base of 5th metacarpal

96
Q

flexor carpi ulnaris innervation

A

ulnar nerve

97
Q

flexor carpi ulnaris action

A

flexes wrist and adducts hand

98
Q

flexor digitorum superficialis origin

A

humeroulnar head- medial epicondyle of humerus and coronoid process of the ulna, radial head- proximal half anterior border of radius

99
Q

flexor digitorum superficialis insertion

A

palmar aspect of middle phalanges of digits 2-5

100
Q

Flexor digitorum superficialis innervation

A

median nerve

101
Q

flexor digitorum superficialis action

A

flexes proximal IP joints of 2-5 and assists in flexion of the MP joints of wrist and forearm

102
Q

flexor digitorum profundus origin

A

proximal 2/3 of the medial anterior surface of the ulnar and adjacent interosseous membrane

103
Q

flexor digitorum profundus insertion

A

palmar surface of distal phalanges digits 2-5

104
Q

flexor digitorum profundus innervation

A

1/2 anterior interosseous nerve, 1/2 ulnar nerve

105
Q

flexor digitorum profundus action

A

Flexion of distal IP joints, flexion of proximal IP joints, MP joints and wrist joints

106
Q

Flexor pollicis longus origin

A

grooved anterior surface of radius and adjacent interosseous membrane, may also attach to the medial border of the coronoid process of the ulna and the medial epicondyle of the humerus

107
Q

flexor pollicis longus insertion

A

palmar surface, base of distal phalanx of thumb

108
Q

Flexor pollicis longus innervation

A

anterior interosseous nerve

109
Q

flexor pollicis longus action

A

flexes thumb

110
Q

Pronator quadratus origin

A

distal 4th of anterior surface of the ulna

111
Q

pronator quadratus insertion

A

distal 4th anterior surface of the radius

112
Q

pronator quadratus innervation

A

anterior interosseous nerve

113
Q

pronator quadratus action

A

pronates the hand

114
Q

Extensor carpi radialis longus origin

A

lateral supracondylar ridge of humerus

115
Q

extensor carpi radialis longus insertion

A

dorsal surface of the 2nd metacarpal

116
Q

extensor carpi radialis longus innervation

A

radial nerve

117
Q

extensor carpi radialis longus action

A

extends and abducts the hand

118
Q

extensor carpi radialis brevis origin

A

lateral epicondyle of humerus

119
Q

extensor carpi radialis brevis insertion

A

dorsal surface of base of the 3rd metacarpal

120
Q

extensor carpi radialis brevis innervation

A

deep branch of radial nerve

121
Q

extensor carpi radialis brevis action

A

extends and assists in abduction of the hand

122
Q

Extensor digitorum origin

A

lateral epicondyle of the humerus

123
Q

Extensor digitorum insertion

A

dorsal surface of the middle and distal phalanges of digits 2-5

124
Q

extensor digitorum innervation

A

deep branch of radial nerve

125
Q

extensor digitorum action

A

Extends digits 2-5, assists with extension of hand

126
Q

extensor digiti minimi origin

A

lateral epicondyle of the humerus via common extensor tendon

127
Q

extensor digiti minimi insertion

A

dorsal surface of proximal phalanx of the 5th digit

128
Q

extensor digiti minimi innervation

A

deep branch of the radial nerve

129
Q

extensor digiti minimi action

A

extends the 5th digit

130
Q

Extensor carpi ulnaris origin

A

lateral epicondyle of humerus and posterior border of the ulna

131
Q

extensor carpi ulnaris insertion

A

dorsal base of 5th metacarpal

132
Q

Extensor carpi ulnaris innervation

A

deep branch of radial nerve

133
Q

extensor carpi ulnaris action

A

extends and adducts the hand

134
Q

abductor pollicis longus origin

A

middle 3rd of posterior surface of ulna, radius and interosseous membrane

135
Q

abductor pollicis longus insertion

A

dorsolateral surface of base of the 1st metacarpal

136
Q

abductor pollicis longus innervation

A

posterior interosseous nerve

137
Q

abductor pollicis longus action

A

abducts the thumb and wrist, assists with extension of thumb

138
Q

Extensor pollicis brevis origin

A

distal 3rd of posterior surface of the radius and interosseous membrane

139
Q

extensor pollicis brevis insertion

A

dorsal surface of base of proximal phalanx of thumb

140
Q

extensor pollicis brevis innervation

A

posterior interosseous nerve

141
Q

extensor pollicis brevis action

A

extends proximal phalanx of thumb and 1st metacarpal

142
Q

Extensor pollicis longus origin

A

middle 3rd of ulnar and interosseous membrane

143
Q

extensor pollicis longus insertion

A

dorsal surface of base of distal phalax of thumb

144
Q

extensor pollicis longus innervation

A

posterior interosseous nerve

145
Q

extensor pollicis longus action

A

extends the thumb at the IP and MCP joints

146
Q

extensor indicis origin

A

distal 3rd of posterior surface of the ulna and interosseous membrane

147
Q

extensor indicis insertion

A

dorsum, base of distal phalanx of 2nd digit with extensor expansion

148
Q

extensor indicis innervation

A

posterior interosseous nerve

149
Q

extensor indicis action

A

extends the index finger

150
Q

Supinator origin

A

lateral epicondyle of humerus, radial collateral ligament of elbow joint, annular ligament of radial head, supinator fossa of ulna and associated crest

151
Q

Supinator insertion

A

lateral and anterior surface of proximal 3rd of radius

152
Q

Supinator innervation

A

deep branch of radial nerve

153
Q

supinator action

A

supinates the hand

154
Q

brachioradialis origin

A

lateral supracondylar ridge of the humerus

155
Q

brachioradialis insertion

A

lateral radius at base of

styloid process

156
Q

brachioradialis innervation

A

radial nerve

157
Q

brachioradialis action

A

relatively weak forearm flexion, maximal when forearm is midpronated

158
Q

abductor pollicis brevis innervation

A

recurrent branch of median nerve

159
Q

abductor pollicis brevis perfusion

A

superficial palmar branch of radial artery

160
Q

abductor pollicis brevis action

A

abducts thumb

161
Q

Thenar compartment muscles

A

abductor pollicis brevis, flexor pollicis brevis, opponens pollicis

162
Q

flexor pollicis brevis perfusion

A

superficial palmar branch of radial artery

163
Q

flexor pollicis brevis innervation

A

superficial head- recurrent branch of median nerve, deep head- deep branch of ulnar nerve

164
Q

flexor pollicis brevis action

A

flexes thumb

165
Q

opponens pollicis perfusion

A

superficial branch of radial artery

166
Q

opponens pollicis innervation

A

recurrent branch of median nerve

167
Q

Adductor compartment muscle

A

adductor pollicis

168
Q

adductor pollicis perfusion

A

deep palmar arch

169
Q

adductor pollicis innervation

A

deep branch of ulnar nerve

170
Q

adductor pollicis action

A

adducts thumb

171
Q

Hypothenar compartment muscles

A

Abductor digiti minimi, flexor digiti minimi brevis, opponens digiti minimi

172
Q

Abductor digiti minim perfusion

A

deep palmar branch of ulnar artery

173
Q

abductor digiti minimi innervation

A

deep ulnar nerve

174
Q

abductor digiti minimi action

A

abducts 5th digit

175
Q

flexor digiti minimi brevis perfusion

A

deep palmar branch of ulnar artery

176
Q

flexor digiti minimi brevis innervation

A

deep branch of ulnar nerve

177
Q

flexor digiti minimi brevis action

A

flexes proximal phalanx of 5th digit

178
Q

opponens digiti minimi perfusion

A

deep palmar branch of ulnar artery

179
Q

opponens digiti minimi innervation

A

deep branch of ulnar nerve

180
Q

opponens digit minimi action

A

rotates and flexes 5th digit toward thumb

181
Q

muscle superficial to hypothenar compartment

A

palmaris brevis

182
Q

palmaris brevis perfusion

A

superficial palmar arch

183
Q

palmaris brevis innervation

A

superficial branch of ulnar nerve

184
Q

palmaris brevis action

A

assists with grip, protects ulnar artery and nerve

185
Q

central compartment muscle

A

lumbricals

186
Q

lumbricals perfusion

A

superficial and deep palmar arches

187
Q

lumbricals innervation

A

1st and 2nd lumbricals- unipennate and median nerve

3rd and 4th lumbricals- bipennate and ulnar nerve

188
Q

lumbricals action

A

extend IP joint and flex the MCP joint

189
Q

interosseous compartment muscles

A

palmar interosseous muscles, dorsal interosseous muscles

190
Q

palmar interosseous muscles perfusion

A

deep palmar arch

191
Q

palmar interosseous muscles innervation

A

deep branch of ulnar nerve

192
Q

palmar interosseous muscles action

A

adduction of digits

193
Q

dorsal interosseous muscles perfusion

A

deep palmar arch

194
Q

dorsal interosseous innervation

A

deep branch of ulnar nerve

195
Q

dorsal interosseous action

A

abduction of digits 2-4

196
Q

What is innervated by the median nerve before the branching of the anterior interosseous nerve

A

Flexor carpi radialis, palmaris longus, and flexor digitorum superficialis, pronator teres

197
Q

What is innervated by the median nerve after the branching of the anterior interosseous nerve

A

lumbricals 1 and 2, and palmar cutaneous branch to lateral 3.5 digits

198
Q

what is innervated by the anterior interosseous nerve

A

lateral 1/2 of flexor digitorum profundus, flexor pollicis longus, pronator quadratus

199
Q

what is innervated by the recurrent median nerve

A

opponens pollicis, superficial head of flexor pollicis brevis, abductor pollicis brevis

200
Q

Median nerve branches in the hand

A

recurrent branch of median nerve, common digital branches and then proper digital nerves

201
Q

Ulnar nerve innervates

A

flexor carpi ulnaris and medial 1/2 of flexor digitorum profundus

202
Q

superficial branch of ulnar nerve innervates

A

palmaris brevis and cutaneous sensation to the medial 1.5 digits

203
Q

deep branch of the ulnar nerve innervates

A

deep head of flexor pollicis brevis, adductor pollicis, abductor digiti minimi, flexor digiti minimi brevis, opponens digiti minimi, 3rd and 4th lumbricals, palmar interosseous and dorsal interosseous muscles

204
Q

radial nerve innnervates

A

triceps brachii, anconeus, brachialis, brachioradialis, extensor carpi radialis longus

205
Q

superficial branch of radial nerve innervates

A

cutaneous sensation of posterior arm and dorsal hand

206
Q

deep branch of radial nerve innervates

A

supinator, extensor digiti minimi, extensor digitorum, extensor carpi radialis brevis, extensor carpi ulnaris

207
Q

After passing through supinator radial nerve turns into posterior interosseous nerve and innervates

A

abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus, and extensor indicis

208
Q

Musculocutaneous nerve innervates

A

biceps brachii, coracobrachialis, and brachialis

209
Q

Musculocutaneous nerve becomes the lateral antebrachial cutaneous nerve which innervates

A

cutaneous sensation to lateral forearm

MSK I muscles (2 decks)

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