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exci 253 tag 1 > lab 2+3 > Flashcards

lab 2+3 Flashcards

1
Q

what is the o of the pectoralis major m.?

A
  1. Clavicular head:
    medial clavicle
    2.Sternocostal head:
    Sternum and costal
    cartilages of ribs 2-6
    (sometimes ribs 1-7)
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2
Q

what is the i of pec major m?

A

Greater tubercle
and lateral lip of
intertubercular
groove of
humerus

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3
Q

what is the action of pec major?

A

Flexion, adduction
& medial rotation
of humerus

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4
Q

what is the innervation of pec major?

A

Medial &
lateral pectoral
n.

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5
Q

what is the o of pec MINOR?

A

Ribs 2-5 (sometimes
3-5 or 2-4) near their
costal cartilages

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6
Q

what is the i of pec minor?

A

coracoid process of scapula

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7
Q

what is the action of pec minor

A

Abduction &
downward
rotations of
scapula; assists in
elevation of ribs
when pectoral
girdle is fixed

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8
Q

what is the innervation of pec minor?

A

medial pectoralis n

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9
Q

what is the o of subclavius?

A

1st rib

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10
Q

what is the i of subclavius?

A

subclavian groove of clavicle

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11
Q

what is the action of the subclavius?

A

depress clavicle

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12
Q

what is the innervation of subclavius?

A

subclavian n.

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13
Q

what is the o of serratus ant m?

A

ribs 1-8 (sometimes 1-9)

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14
Q

what is the i of serratus anterior?

A

medial border of inf angle of the scapula

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15
Q

what is the action of serratus ant?

A

abduction and upward rotation of the scapula(protraction)

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16
Q

what is the innervation of the serratus ant?

A

long thoracic n.

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17
Q

what is the o of serratus posterior sup?

A

lig nuchae, spinous processes of C7-T3

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18
Q

what is the insertion of serratus post sup?

A

superior border of ribs 2-4

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19
Q

what is the action of serratus post sup?

A

elevation of ribs

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20
Q

what is the innervation of serratus post sup?

A

2-5 intercostal n.

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21
Q

what is the origin of serratus post inf?

A

spinous processes of T11-L2 vertebrae

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22
Q

what is the insertion of serratus post inf?

A

inf border of ribs 8-12 near their angles

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23
Q

what is the action of serratus post inf?

A

depression of ribs

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24
Q

what is the innervation of serratus post inf?

A

9-12 thoracic spinal n.

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25
Q

what is the origin of trapezius?

A

occipital bone, lig nuchae, spinous processes of C7-T12

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26
Q

what is the insertion of the trapezius?

A

lat 1/3 of clavicle, spine and acromion of scapula bone

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27
Q

what is the action of the superior fibres of the trapezius?

A

upward rotation of scapula; helps extend the head

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28
Q

what is the action of the middle fibres of the trapezius?

A

adduction of scapule(RETRACTION)

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29
Q

What is the action of the inf. fibres of the trapezius m?

A

depression and upward rotation of scapule

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30
Q

what is the innervation of the trapezius m?

A

CN XI(accessory) AND C3-C5

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31
Q

what is the origin of lat. dorsi?

A

spinous processes of T7-L5, sacral crest, iliac crest and inferior 4 ribs

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32
Q

what is the insertion of the latissimus dorsi?

A

floor of intertubercular groove of humerus

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33
Q

what is the insertion of the latissimus dorsi?

A

floor of the intertubercular groove of the humerus

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34
Q

what is the action of lat dorsi

A

extension, adduction, medial rotation of the humerus(use it’s location to help)

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35
Q

what is the innervation of latissimus dorsi?

A

thoracodorsal n. (it’s in the back/thorax region)

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36
Q

what is the origin of the levator scapula?

A

transverse processes of c1 and c4

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37
Q

what is the insertion of levator scapula?

A

upper 1/3 of medial border of scapula

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38
Q

what is the action of levator scapula?

A

elevation and downward rotation of scapula

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39
Q

what is the innervation of levator scapula?

A

dorsal scapula n. + cervical n. c3-c5

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40
Q

what is the origin of rhomboid major?

A

spinous process of t2-t5

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41
Q

what is the insertion of rhomboid major?

A

lower 1/3 of the medial border of scapula

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42
Q

what is the action of the rhomboid major?

A

elevation, adduction and downward rotation of scapula(STABILIZES SCAPULA)

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43
Q

what is the innervation of rhomboid major?

A

dorsal scapula n. (makes sense since its in the back and near/deals with scapula’s)

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44
Q

what is the origin of rhomboid minor?

A

spinous processes of C7-t1 (higher than major)

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45
Q

what is the insertion of the rhomboid minor?

A

medial border of scapula superior to spine (sup to rhb major)

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46
Q

what is the action of the rhomboid minor?

A

elevation, adduction and downward rotation of scapula (stabilizes scapula) i.e if winging of scap focus on rhomboids to fix

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47
Q

what is the origin of the deltoid?

A

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

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48
Q

what is the insertion of the deltoid?

A

deltoid tuberosity of humerus

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49
Q

what is the action of the ant.fibers for the deltoid?

A

flexion and medial rotation of humerus

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50
Q

what is the action of the lat fibers of the deltoid?

A

abduction of humerus

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51
Q

what is the action of the post fibers of the deltoid?

A

extension and lateral rotation of the humerus

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52
Q

what is the innervation of the deltoid m.?

A

axillary n

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53
Q

what are the muscles that are part of the rotator cuff muscle group?

A

supraspinatus
infraspinatus
teres minor
subscapularis

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54
Q

what is the purpose of the rotator cuff muscle group?

A

is to hold the head of the humerus in the glenoid fossa of the scapula

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55
Q

what is the origin of the supraspinatus?

A

supraspinous fossa of scapula

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56
Q

what is the insertion of the supraspinatus?

A

greater tubercle of humerus

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57
Q

what is the action of the supraspinatus?

A

assist deltoid muscle in abduction of the humerus at the joint jnt*

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58
Q

what is the innervation of the supraspinatus m?

A

suprascapular n

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59
Q

what is the origin of the infraspinatus m?

A

infraspinous fossa of the scapula

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60
Q

what is the insertion of the infraspinatus m?

A

the greater tubercle of the humerus

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61
Q

what is the action of the infraspinatus m?

A

lat rotation of the humerus at shoulder jnt

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62
Q

what is the innervation of the infraspinatus m?

A

suprascapular n

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63
Q

what is the origin of the teres minor?

A

inferior lateral border of scapula

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64
Q

what is the insertion of the teres minor m?

A

greater tubercle of the humerus

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65
Q

what is the action of teres minor m?

A

lateral rotation of the humerus at shoulder jnt.

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66
Q

what is the innervation of the teres minor m?

A

axillary n.

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67
Q

what is the origin of teres major m?

A

the inferior angle of the scapula

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68
Q

what is the insertion of the teres major m?

A

medial lip of intertubercular groove of humerus

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69
Q

what is the action of teres major?

A

extends and assists in adduction and medial rotation of humerus at shoulder jnt

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70
Q

what is the innervation of the teres major m?

A

lower subscapular n.

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71
Q

what is the origin of the subscapularis m?

A

subscapular fossa of the scapula

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72
Q

what is the insertion of the subscapularis m?

A

lesser tubercle of humerus

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73
Q

what is the action of the subscapularis m?

A

medial rotation of humerus at shoulder jnt.

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74
Q

what is the innervation of the subscapularis m?

A

upper/lower subscapular n.

75
Q

what is the origin of the long head of the bicep brachii?

A

supraglenoid tubercle of scapula

76
Q

what is the origin of the short head of the bicep brachii?

A

coracoid process of scapula

77
Q

what is the insertion of the bicep brachii?

A

radial tuberosity of radius and deep fascia of forearm vial bicipital aponeurosis

78
Q

what is the action of the bicep brachii?

A

flexion of forearm at elbow joint, supination of forearm at radioulnar jnt, flexion of humerus at shoulder jnt

79
Q

what is the innervation of bicep brachii?

A

musculocutaneous n.

80
Q

what is the origin of the brachialis?

A

distal ant. surface of humerus

81
Q

what is the insertion of the brachialis?

A

ulnar tuberosity and coronoid process of ulna

82
Q

what is the action of the brachialis?

A

flexion of the forearm at elbow jnt.

83
Q

what is the innervation of the brachialis?

A

musculocutaneuous n and radial n

84
Q

what is the origin of coracobrachialis?

A

coracoid process of scapula

85
Q

what is the insertion of coracobrachialis?

A

middle 1/3 of medial surface of shaft of humerus

86
Q

what is the action of coracobrachialis?

A

flexion and adduction of the humerus at shoulder jnt

87
Q

what is the innervation of coracobrachialis m?

A

musculocutaneous n

88
Q

what is the origin of the long head of the tricep brachii?

A

infraglenoid tubercle of scapula

89
Q

what is the origin of the lateral head of the tricep brachii?

A

lateral and posterior surface of humerus above radial groove

90
Q

what is the origin of the lateral head of the tricep brachii?

A

the lateral and posterior surface of the humerus above the radial groove

91
Q

what is the insertion of the triceps brachii?

A

olecranon process of ulna

92
Q

what is the action of the triceps brachii m group?

A

extension of humerus at shoulder jnt, and extension of forearm at elbow jnt

93
Q

what is the innervation of triceps brachii?

94
Q

what is the origin of the brachioradialis?

A

lateral border of distal end of humerus

95
Q

what is the insertion of brachioradialis?

A

superior to styloid process of radius

96
Q

what is the action of the brachioradialis?

A

flexion of forearm at elbow jnt

97
Q

what is the innervation of the brachioradialis?

98
Q

what is the origin of pronator teres m?

A

medial epicondyle of humerus and coronoid process of ulna

99
Q

what is the insertion of the pronator teres m?

A

mid-lateral shaft of radius

100
Q

what is the action of pronator teres?

A

pronation of forearm at radioulnar jnt and flexion and flexion of the forearm at elbow joint

101
Q

what is the innervation of the pronator teres m?

102
Q

what is the origin of the flexor carpi radialis?

A

medial epicondyle of humerus

103
Q

what is the insertion of flexor carpi radialis

A

base of 2nd and 3rd metacarpal

104
Q

what is the action of the flexor carpi radialis?

A

flexion and abduction(radial deviation) of hand at wrist jnt

105
Q

what is the innervation of flexor carpi radialis?

106
Q

what is the origin of palmaris longus?

A

medial epicondyle of humerus

107
Q

what is the insertion of palmaris longus?

A

flexor retinaculum and palmar aponeurosis

108
Q

what is the action of palmaris longus?

A

tense palmar aponeurosis, flexion of hand at wrist jnt,

109
Q

what is the innervation of the palmaris longus?

110
Q

what is the origin of flexor carpi ulnaris?

A

medial epicondyle of humerus

111
Q

what is the insertion of the flexor carpi ulnaris?

A

pisiform, hook of hamate and base of 5th metacarpal

112
Q

what is the action of flexion carpi ulnaris?

A

flexion and adduction(ulnar deviation) of hand at wrist jnt

113
Q

what is the innervation of flexor carpi ulnaris?

114
Q

what is the origin of flexor digitorum superficialis?

A

medial epicondyle of humerus, proximal radius and ulna

115
Q

what is the insertion of flexor digitorum superficialis?

A

middle phalanx of digits 2-5

116
Q

what is the action of flexor digitorum superficialis?

A

flexion of middle phalanges of digits 2-5, flexion of hand at wrist

117
Q

what is the innervation of flexor digitorum superficialis?

118
Q

what is the origin of flexor digitorum profundus?

A

ant medial surface of shaft of ulna and interosseous membrane

119
Q

what is the insertion of flexor digitorum profundus?

A

base of distal phalanges of digits 2-5

120
Q

what is the action of flexor digitorum profundus?

A

flexion of distal phalanges of digits 2-5 and flexion of hand at wrist jnt

121
Q

what is the innervation of flexor digitorum profundus?

A

median and ulnar n

122
Q

what is the origin of flexor pollicis longus

A

ant surface of radius and interosseous membrane

123
Q

what is the insertion of flexor pollicis longus

A

base of distal phalanx of thumb

124
Q

what is the action of flexor pollicis longus?

A

flexion of distal phalanx of thumb

125
Q

what is the innervation of flexor pollicis longus?

126
Q

what is the origin of the pronator quadratus?

A

distal shaft of ulna

127
Q

what is the insertion of the pronator quadratus?

A

distal shaft of radius

128
Q

what is the action of the pronator quadratus?

A

pronation of forearm at radioulnar jnt

129
Q

what is the innervation of pronator quadratus?

130
Q

what is the origin of extensor carpi radialis longus?

A

lateral supracondylar ridge of humerus

131
Q

what is the insertion of extensor carpi radialis longus?

A

base of 2nd metacarpal

132
Q

what is the action of extensor carpi radialis longus

A

extension and abduction of hand at wrist jnt

133
Q

what is the innervation of extensor carpi radialis longus?

134
Q

what is the origin of extensor carpi radialis brevis?

A

lateral epicondyle of humerus

135
Q

what is the origin of extensor carpi radialis brevis?

A

base of 3rd metacarpal

136
Q

what is the action of extensor carpi radialis brevis?

A

extension and abduction of hand at wrist jnt

137
Q

what is the innervation of extensor carpi radialis brevis?

138
Q

what is the origin of the extensor digitorum?

A

lateral epicondyle of the humerus

139
Q

what is the insertion of extensor digitorum?

A

middle and distal phalanges of digits 2-5

140
Q

what is the action of extensor digitorum?

A

extension of digits 2-5 and extension of hand at wrist

141
Q

what is the innervation of extensor digitorum?

142
Q

what is the origin of extensor digiti minimi

A

lateral epicondyle of humerus

143
Q

what is the insertion of extensor digiti minimi?

A

tendon of extensor digitorum on 5th phalanx

144
Q

what is the action of extensor digiti minimi?

A

extension of 5th digit(pinky)

145
Q

what is the innervation of extensor digiti minimi?

146
Q

what is the origin of the extensor carpi ulnaris?

A

lateral epicondyle of humerus and post. border of ulna

147
Q

what is the insertion of extensor carpi ulnaris?

A

base of 5th metacarpal

148
Q

what is the insertion of extensor carpi ulnaris?

A

base of 5th metacarpal

149
Q

what is action of extensor carpi ulnaris?

A

extension and adduction(ulnar deviation) of hand at wrist jnt.

150
Q

what is the innervation of extensor carpi ulnaris?

151
Q

what is the origin of anconeus?

A

lateral epicondyle of humerus

152
Q

what is the insertion of anconeus?

A

olecranon of ulna

153
Q

what is the action of the anconeus?

A

extension of forearm at elbow jnt.

154
Q

what is the innervation of anconeus?

155
Q

what is the origin of the supinator?

A

lateral epicondyle of humerus

156
Q

what is the insertion of supinator?

A

lateral proximal 1/3 of radius

157
Q

what is the action of supinator?

A

supination of forearm at radio-ulanr jnt

158
Q

what is the innervation of supinator?

159
Q

what is the abductor pollicis longus?

A

post middle surface of radius and ulna and interosseus membrane

160
Q

what if the insertion of the abductor pollicis longus?

A

base of 1st metacarpal

161
Q

what is the action of abductor pollicis longus

A

abduction and extension of thumb and abduction of hand at wrist jnt.

162
Q

what is the innervation of abductor pollicis longus

163
Q

what is the origin of extensor pollicis brevis?

A

post. middle surface of radius and interosseus membrane

164
Q

what is the insertion of extensor pollicis brevis

A

base of proximal phalanx of thumb

165
Q

what is the action of extensor pollicis brevis?

A

Extension of proximal phalanx of thumb, extension of 1st metacarpal & abduction of hand at wrist jnt.

166
Q

what is the innervation of extensor pollicis brevis?

167
Q

what is the origin of extensor pollicis longus?

A

Posterior middle surface of ulna & interosseous membrane

168
Q

what is the insertion of extensor pollicis longus?

A

Base of distal phalanx of thumb

169
Q

what is the action of extensor pollicis longus?

A

Extension of distal phalanx of thumb, extension of 1st metacarpal and abduction of hand at wrist jnt.

170
Q

what is the innervation of extensor pollicis longus?

171
Q

what is the origin of extensor indicis?

A

post middle surface of ulna and interosseous memebrane

172
Q

what is the insertion of extensor indicis?

A

blends into tendon of extensor digitorum of 2nd digit

173
Q

what is the action of extensor indicis?

A

extension of index finger and extension of hand at wrist jnt.

174
Q

what is the innervation of extensor indicis?

175
Q

what is the innervation of extensor carpi ulnaris, anconeus and opponens pollicis?

176
Q

what is the origin of adductor pollicis?

177
Q

what is the innervation of abductor digiti minimi, flexor digiti minimi brevie and opponents digiti minimi?

178
Q

what is the action of lumbricals?

A

flexion of metacarpophalangeal jnts and extension of interphalangeal jnts

179
Q

what is the innervation of lumbricals?

A

1-2 median n
3-4 ulnar n.

180
Q

what is the action of palmar interossei?

A

adduction of fingers

181
Q

what is the innervation of the palmar interossei m.?

182
Q

what is the action of dorsal interossei?

A

abduction of fingers

183
Q

what is the innervation of dorsal interossei?

exci 253 tag 1 (3 decks)

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