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Clinical Anatomy > OIA's Upper Limbs > Flashcards

OIA's Upper Limbs Flashcards

1
Q

Pectoralis major mm. O

A

clavicular head: clavicle
sternal head: anterior sternum and upper costal cartilages
abdominal head: rectus sheath

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2
Q

Pec. major Ins.

A

lateral lip of intertubercular groove (humerus)

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3
Q

Pec. major innerv.

A

lateral pectoral n.

medial pectoral n. (c5, C6, C7, C8, t1)

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4
Q

Pec major action

A

all heads: adduct and medially rotate humerus
sternocostal head: extend humerus when arm s flexed (pulls arm down)
clavicular head: flex humerus

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5
Q

pectoralis minor mm. O

A

anterior rib #3-#5

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6
Q

pec minor Insert.

A

coracoid process (scapula)

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7
Q

pec minor innerv.

A

medial pectoral n. (c8-t1)

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8
Q

pec minor action

A

1; depresses scapula and rotates head downward

2; stabilize scap and elevate ribs 3-5 for inhalation

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9
Q

subclavius mm. O

A

rib #1

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10
Q

sublclavius mm. Insert.

A

inferior surface of clavicle

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11
Q

subclavius mm. Innerv.

A

C5, c6, subclavius n.

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12
Q

subclavius action

A

1; depress clavicle

2; stabilize clavicle and sternoclavicular jnt

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13
Q

serratus anterior mm. O

A

external lateral surface of ribs #1-8/9

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14
Q

serratus anterior mm. Ins.

A

anterior surface at medial border of scapula

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15
Q

serratus anterior mm. Innerv.

A

long thoracic nn. (c5, C6, C7)

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16
Q

serratus anterior mm. action

A

1; protracts scapula and rotates head upward

2; stabilize scapula against thoracic wall

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17
Q

Trapezius O

A

Descending fibers: occiput, spinous process c1-c7
middle fibers: ligamentum nuchae & spinous process T1-T4
ascending fibers: spinous process T15-T12

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18
Q

trapezius insertion

A

desc. fibers: lateral 1/3 of clavicle
middle fibers: acromion of scap
ascending fibers: scapular spine

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19
Q

trap innerv.

A

accessory cranial n. (motor CNX1)

somatic sensory from (C3, C4)

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20
Q

trap desc. fib action

A

elevate scap

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21
Q

trap middle fib action

A

retracts scap

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22
Q

asc. fib action

A

depresses scap

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23
Q

all fibers of traps… action

A

rotates scap

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24
Q

Lat Dorsi O

A

spinous process t7-t12; thoracolumbar fascia; iliac crest, ribs 9-12

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25
Q

Lat dorsi I

A

floor of intertubercular groove of humerus

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26
Q

lat. innerv.

A

thoracodorsal nn. (c6, c7, c8)

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27
Q

lat dorsi action

A

extends, adducts, and internally rotates humerus; raises body towards arm (?)

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28
Q

levator scapulae O

A

transverse process C1-C4

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29
Q

levator scap I

A

supermedial border of scapula

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30
Q

levator scap innerv.

A

dorsal scapular n. (c4, c5)

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31
Q

levator scap action

A

elevates scapula & rotates head downward; extends and laterally flexes cervical vertebrae

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32
Q

rhomboid major origin

A

spinous process of T1-T4

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33
Q

rhomboid major insertion

A

inferomedial border of scapula

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34
Q

rhomboid major innerv.

A

dorsal scapular nerve (c4, c5)

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35
Q

rhomboid major action

A

retracts scapula and rotates head downward; stabilizes scapula to thoracic wall

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36
Q

rhomboid minor O

A

ligamentum nuchae & spinous process of c6-T1

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37
Q

rhomboid minor Insertion

A

medial border of scapula (at base of spine)(

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38
Q

rhomboid minor Innerv.

A

dorsal scapular nn (c4, c5)

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39
Q

rhomboid minor action

A

retracts scapula and rotates head downward; stab. scapula to thoracic wall

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40
Q

deltoid origin

A

lateral 1/3 of clavicle, acromion and spine of scapula

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41
Q

deltoid insertion

A

deltoid tuberosity of humerus

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42
Q

deltoid innerv.

A

axillary nn. (c5, c6)

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43
Q

deltoid action

A

anterior head: flex, adduct, and internally rotate humerus
middle head: abduct humerus
posterior head: extend, adduct, and externally rotate humerus

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44
Q

teres major origin

A

inferior angle of the scapula

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45
Q

teres major insertion

A

intertubercular groove of humerus

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46
Q

teres major inn.

A

lower subscapular nn. (c5, c6)

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47
Q

teres major action

A

adduct, extend, medially rotate humerus (helps stabilize GHJ)

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48
Q

S- supraspinatus origin

A

supraspinous fossa of scapula

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49
Q

supraspinatus insertion

A

greater tubercle of the humerus!

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50
Q

supraspinatus innerv.

A

suprascapular n. (c4, c5, c6)

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51
Q

supraspinatus action

A

initiates abduction of humerus

* rotator cuff- prevent inferior glide of humerus!

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52
Q

infraspinatus origin

A

infraspinous fossa of the scapula

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53
Q

infraspinatus insertion

A

greater tubercle of the humerus

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54
Q

infraspinatus innerv.

A

suprascapular nn.

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55
Q

suprascapular nn. innervates what 2 mm?? (because its super!)

A

supraspinatus and infraspinatus

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56
Q

infraspinatus action

A

externally rotate humerus

*rotator cuff- prevent superior glide of humerus (when flexed)

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57
Q

teres minor origin

A

mid-lateral border of the scapula

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58
Q

teres minor insertion

A

greater tubercle of humerus

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59
Q

teres minor innerv.

A

axillary n. (c5, c6)

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60
Q

teres minor action

A

externally rotate and weak adduction of humerus

*rotator cuff- stabilizes GHJ

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61
Q

subscapularis origin

A

subscapular fossa of scapula

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62
Q

subscapularis insertion

A

lesser tubercle of humerus

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63
Q

subscapularis innerv.

A

upper and lower subscapular nerves (c5, c6, c7)

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64
Q

subscapularis action

A

adduct and IR humerus!

*rotator cuff- prevent superior glide of humerus (when flexed)

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65
Q

coracobrachialis origin

A

coracoid process of scapula

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66
Q

coracobrachialis insertion

A

middle 1/3 of medial humerus

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67
Q

coracobrachialis innerv.

A

musculocutanous nn. (c5, c6, c7)

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68
Q

coracobrachialis action

A

flex and adduct humerus

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69
Q

biceps brachii (long head) origin

A

supraglenoid tubercle of scapula

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70
Q

biceps brachii (long head) insertion

A

radial tuberosity and bicipital aponeurosis

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71
Q

biceps brachii (long head) innerv.

A

musculocutaneous nn. (c5, c6, c7)

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72
Q

biceps brachii (long head) action

A

stabilizes GHJ and supinates and flexes forearm/elbow

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73
Q

biceps brachii (short head) O

A

coracoid process of scapula

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74
Q

biceps brachii (short head) Insert.

A

radial tuberosity and bicipital aponeurosis

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75
Q

biceps brachii (short head) innerv.

A

musculocut n. (c5, 6, 7)

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76
Q

biceps brachii (short head) action

A

supinates and flexes forearm/ elbow

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77
Q

brachialis O

A

distal 1/2 of anterior humerus

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78
Q

brachialis Insert.

A

coronoid process of ulna

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79
Q

brachialis innerv.

A

musculocutaneous n. (c5, c6) and radial nn. (c6, c7)

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80
Q

brachialis action

A

flexes forearm

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81
Q

triceps brachii (long head) O

A

infraglenoid tubercle of scapula

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82
Q

triceps brachii (long head) Insert.

A

olecranon process of the ulna

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83
Q

triceps brachii (long head) Innerv.

A

radial nn. (c6, c7, c8)

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84
Q

triceps brachii (long head) action

A

extends and adducts arm/shoulder

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85
Q

triceps brachii (medial head) O

A

posterior surface of humerus (below RADIAL GROOVE)

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86
Q

triceps brachii (medial head) I

A

olecranon process

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87
Q

triceps brachii (medial head) innerv.

A

radial nn. (c6,c7,c8)

88
Q

triceps brachii (medial head) action

A

extends forearm/elbow

89
Q

triceps brachii (lateral head) O

A

posterior surface of humerus (above radial groove)

90
Q

triceps brachii (lateral head) Insert.

A

olecranon process of ulna

91
Q

triceps brachii (lateral head) innerv/

A

radial nn. (c6, c7, 8)

92
Q

triceps brachii (lateral head) action

A

extends forearm/elbow

93
Q

anconeus origin

A

lateral epicondyle

94
Q

anconeus insertion

A

lateral suface of olecranon

95
Q

anconeus innerv.

A

radial nn. (c7, 8 , T1)

96
Q

anconeus action

A

weakly extends forearm/elbow and stabilizes elbow

97
Q

pronator teres is part of which compartment

A

flexor/ anterior/ pronator

98
Q

pronator teres origin

A

medial epicondyle of humerus and coronoid process of ulna

99
Q

pronator teres insertion

A

lateral surface of proximal 1/3 of radius!

100
Q

pronator teres innerv.

A

median nn. (c6, c7)

101
Q

pronator teres action

A

pronates and flexes forearm/elbow

102
Q

flexor carpi radialis origin

A

medial epicondyle of humerus

103
Q

flexor carpi radialis insertion

A

base of 2nd metacarpal

104
Q

flexor carpi radialis innerv.

A

meidan n. (c6, c7)

105
Q

flexor carpi radialis action

A

flexes and abducts hand at wrist

106
Q

palmaris longus O

A

medial epicondyle

107
Q

palmaris longus Insert.

A

palmar aponeurosis

108
Q

palmaris longus innerv.

A

median n (c7, c8)

109
Q

palmaris longus action

A

weak elbow flexor; flexes hand at wrist and tenses palmar fascia

110
Q

flexor carpi ulnaris origin

A

medial epicondyle

111
Q

flexor carpi ulnaris insertion

A

pisiform, hamate, base of metacarpal 5

112
Q

flexor carpi ulnaris innerv.

A

ulnar n. (c7, 8)

113
Q

flexor carpi ulnaris action

A

flexes and adducts hand at wrist

114
Q

flexor digitorum superficialis O

A

medial epicondyle of humerus and coronoid process of ulna; proximal 1/2 of ant. border of radius

115
Q

flexor digit. superficialis Ins.

A

palmar shaft of middle phalanges 2-5

116
Q

flexor digit. superficialis innerv.

A

median n. (c7, c8, T1)

117
Q

flexor digit. superficialis action

A

weak elbow flexor; flexes digits at proximal IP joint and MCP joint for digits 2-5

118
Q

flexor digitorum profundus origin

A

proximal 2/3 of anteromedial surface of ulna and interosseous membrane

119
Q

flexor digit. profundus insertion

A

palmar base of distal phalanges (2-5)

120
Q

flexor digit. profundus innerv.

A

ulnar n. (c8, T1)

and median n. (c8, T1)

121
Q

FDP action

A

flexes digits at proximal IP, distal IP, and mcp joints of digits 2-5

122
Q

flexor pollicis longus origin

A

anterior surface of proximal radius and interosseous membrane

123
Q

FPL insertion

A

base of distal phalanx of pollex

124
Q

FPL innerv.

A

median n (c8, T1) (anterior interosseous?)

125
Q

FPL action

A

flexes pollex at distal IP joint

126
Q

pronator quadratus origin

A

distal 1/4 of anterior surface of ulna

127
Q

pronator quadratus insertion

A

distal 1/4 of anterior surface of radius

128
Q

pronator quad. innerv.

A

anterior interosseous median n. (c8-t1)

129
Q

pronator quad. action

A

pronates forearm

130
Q

brachioradialis origin

A

lateral supraepicondylar ridge

131
Q

brachioradialis insertion

A

styloid process of the radius

132
Q

brachioradialis innerv.

A

radial n. (c5, c6)

133
Q

brachioradialis action

A

flexes forearm

134
Q

extensor carpi radialis longus Origin

A

lateral supraepicondylar ridge

135
Q

extensor carpi radialis longus insertion

A

Posterior surface of base of 2nd met.

136
Q

extensor carpi radialis longus innerv.

A

radial n. (c6, c7)

137
Q

ECRL action

A

weak forearm flexion; extends and abducts wrist and hand

138
Q

ECRB origin

A

lateral epicondyle of humerus

139
Q

ECRB insertion

A

posterior base of 3rd met!

140
Q

ECRB innerv.

A

radial n. (deep branch) c7, c8

141
Q

ECRB action

A

weak forearm flexion; extends and abducts wrist and hand (same as ECRL)

142
Q

extensor digitorum origin

A

lateral epicondyle of humerus

143
Q

extensor digitorum insertion

A

extensory expansions of digits 2-5

144
Q

extensor digitorum innerv.

A

radial n. (deep branch) c6, c8

145
Q

extensor digiti minimi origin

A

lateral epicondyle of humerus

146
Q

extensor digiti minimi insertion

A

extensor expansion of digit 5

147
Q

extensor carpi ulnaris origin

A

lateral epicondyle & POSTERIOR ASPECT OF MID SHAFT OF ULNA

148
Q

ECU insertion

A

Dorsal surface of base of met 5

149
Q

ECU innerv.

A

radial n. (deep branch c7, c8)

150
Q

ECU action

A

extends and adducts hand at wrist

151
Q

extensor digiti minimi innerv.

A

radial n. (deep barnch c7, c8)

152
Q

extensor digiti minimi action

A

extends digit 5 at mcp and IP joints

153
Q

supinator mm. (extensor) origin

A

lateral epicondyle and lateral collateral and annular ligaments at elbow

154
Q

supinator insertion

A

posterior, lateral, and anterior surface of proximal radius

155
Q

supinator innerv.

A

radial n. (c6, c7)

156
Q

supinator action

A

supinates forearm/ elbow

157
Q

extensor indicis origin

A

interosseous membrane and post. surface of distal ulna

158
Q

extensor indicis insertion

A

extensor expansion of 2nd digit

159
Q

extensor indicis innerv.

A

radial n. (c7, c8)

160
Q

extensor indicis action

A

extends 2nd digits, helps extend hand at wrist

161
Q

abductor pollicis longus origin

A

interosseous membrane and posterior surface of proximal ulna and radius

162
Q

abductor pollicis longus insertion

A

base of first met. (pollex)

163
Q

abductor pollicis longus innerv.

A

radial n. (c7, c8)

164
Q

abductor pollicis longus action

A

abduct hand at wrist; abduct thumb at cmc joint

165
Q

extensor pollicis brevis origin

A

interosseous membrane and post. surface of distal radius

166
Q

extensor pollicis brevis insertion

A

base of proximal phalanx of pollex

167
Q

extensor pollicis brevis innerv.

A

radial nn. (c7, 8)

168
Q

EPB action

A

abduct hand at wrist; extend thumb and cmc and mcp joint

169
Q

extensor pollicis longus origin

A

interosseous membrane and posterior surface of middle 1/3 of ulna

170
Q

extensor pollicis longus insertion

A

base of distal phalanx of pollex

171
Q

extensor pollicis longus innerv.

A

radial nn. (c7, c8)

172
Q

extensor pollicis longus action

A

abduct and extends hand at wrist; extends distal phalanx of thumb at 1st IP joint and cmc and mcp joint

173
Q

opponens pollicis origin

A

flexor retinaculum and scaphoid and trapezium

174
Q

opponens pollicis insertion

A

lateral side of 1st metacarpal

175
Q

opponens pollicis innerv.

A

median nn. (recurrent branch) (c8, t1)

176
Q

opponens pollicis action

A

opposition of thumb at 1st metacarpal

177
Q

abductor pollicis brevis origin

A

flexor retinaculum and scaphoid and trapezium

178
Q

abductor pollicis brevis insertion

A

lateral side of base of proximal phalanx of pollex (higher up than opponens pollicis)

179
Q

abductor pollicis brevis innerv.

A

median n. (c8, t1)

180
Q

abductor pollicis brevis action

A

abdcuts thumb at cmc joint

181
Q

flexor pollicis brevis origin

A

flexor retinaculum and scaphoid and trapezium

182
Q

flexor pollicis brevis insertion

A

lateral side of base of proximal phalanx of pollex

183
Q

flexor pollicis brevis innerv.

A

ulnar and median nn. (c8, t1)

184
Q

flexor pollicis brevis action

A

flexes thumb at cmc joint

185
Q

adductor pollicis brevis- oblique head Origin

A

base of 2nd and 3rd metacarpal and capitate

186
Q

adductor pollicis brevis- oblique head insertion

A

medial side of base of proximal phalanx of pollex

187
Q

adductor pollicis brevis- oblique head innerv.

A

ulnar nn. (c8, t1)

188
Q

adductor pollicis brevis- oblique head action

A

adducts thumb at cmc joint; flexes thumb at mcp joint

189
Q

adductor pollicis brevis- transverse head origin

A

palmar surface of 3rd met

190
Q

adductor pollicis brevis- transverse head insertion

A

medial side of base of proximal phalanx of pollex

191
Q

adductor pollicis brevis- transverse head innerv.

A

ulnar n. (c8, t1)

192
Q

adductor pollicis brevis- transverse head action

A

adducts thumb at cmc joint; flexes thumb at mcp joint

193
Q

abductor digiti minimi origin

A

pisiform

194
Q

abductor digiti minimi insertion

A

medial side of base of proximal phalanx of 5th digit

195
Q

abductor digiti minimi innerv.

A

ulnar n. (c8, t1)

196
Q

abductor digiti minimi action

A

abducts 5th digit, assists in flexion of 5th proximal phalanx

197
Q

flexor digiti minimi (brevis) origin

A

hook of hamate and flexor retinaculum

198
Q

flexor digiti minimi (brevis) insertion

A

medial side of base of proximal phalanx of 5th digit

199
Q

flexor digiti minimi (brevis) innerv.

A

ulnar n.

200
Q

flexor digiti minimi (brevis) action

A

flexes proximal phalanx at mcp joint of 5th digit

201
Q

opponens digiti (minimi) origin

A

hook of hamate and flexor retinaculum

202
Q

opponens digiti (minimi) insertion

A

medial border of 5th metacarpal

203
Q

opponens digiti (minimi) innerv.

A

ulnar n. (c8, t1)

204
Q

opponens digiti (minimi) action

A

draws 5th metacarpal anterior and rotates it for opposition with the thumb

205
Q

lumbricals origin

A

tendons of flexor digitorum profundus

206
Q

lumbricals insertion

A

extensor expansions of proximal phalanges of 2nd-5th digits

207
Q

lumbricals innerv.

A

median and ulnar n. (c8, t1)

208
Q

lumbricals action

A

flex mcp joints; extend IP joints of 2nd-5th digits

209
Q

dorsal interossei 1-4 origin

A

adjacent sides of 2 adjacent metacarpals

210
Q

dorsal interossei 1-4 insertion

A

base of proximal phalanges; extensor expansions of 2-4 digits

211
Q

dorsal interossei 1-4 innerv.

A

ulnar nn. (c8, t1)

212
Q

dorsal interossei1-4 action

A

abducts 2-4 digits; flex of cmc; mcp and extend IP joints

213
Q

palmar interossei 1-3 origin

A

palmar surface of 2, 4, 5 metacarpals

214
Q

palmar interossei 1-3 insertion

A

base of proximal phalanges; extensor expansions of 2, 4, 5 digits

215
Q

palmar interossei 1-3 innerv.

A

ulnar nn. (c8, t1)

216
Q

palmar interossei 1-3 action

A

adduct 2, 4, 5; flex mcp and extend IP joint

Clinical Anatomy (8 decks)

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