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Gross Anatomy 2nd Exam > Muscles > Flashcards

Muscles Flashcards

0
Q

Pectoralis major insertion

A

Greater tubercle, intertubercular groove of humerus

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1
Q

Pectoralis major origin

A

Clavicle, sternum, upper ribs, tendon of external oblique

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2
Q

Pectoralis major action

A

Adduction and medial rotation of humerus. Forced inspiration by elevating ribcage. Clavicular: flexes humerus at shoulder joint. Sternocostal: extends humerus at shoulder joint

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3
Q

Pec major nerve

A

Medial and lateral pectoral nerve

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4
Q

Pectoral minor origin

A

Upper ribs

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5
Q

Pec minor insertion

A

Coracoid process of scapula

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6
Q

Pec minor action

A

Protraction/abduction of scapula. Elevates ribcage, thus forced inspiration

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7
Q

Pec minor nerve

A

Medial pectoral nerve

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8
Q

Subclavius origin

A

First rib

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9
Q

Subclavian insertion

A

Subclavian groove of clavicle

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10
Q

Subclavius action

A

Moves clavicle medially. Acts as protective cushion between clavicle and subclavian vessels.

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11
Q

Subclavian nerve

A

Nerve to subclavius

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12
Q

Trapezius origin

A

Superior nuchal line of occiput. External occipital protuberance. Ligamentum nuchae. Spines of thoracic vertebrae

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13
Q

Trapezius insertion

A

Clavicle, acromion process of scapula

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14
Q

Trapezius action

A

Stabilizes scapula. Upper portion: elevates scapula. Middle and lower: adducts scapula.

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15
Q

Trapezius nerve

A

Motor: spinal accessory. Sensory: c4,c5.

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16
Q

Rhomboid major origin

A

Spine of upper thoracics

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17
Q

Rhomboid major insertion

A

Vertebral border of scapula

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18
Q

Rhomboid major action

A

Elevates and adducts scapula. Helps stabilize scapula.

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19
Q

Rhomboid major nerve

A

Dorsal scapular nerve

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20
Q

Rhomboid minor origin

A

Spine of lower cervicals and t1

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21
Q

Rhomboid minor insertion

A

Vertebral border of scapula

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22
Q

Rhomboid minor action

A

Elevates and adducts scapula. Stabilizes scapula.

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23
Q

Rhomboid minor nerve

A

Dorsal scapular nerve

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24
Q

Levator scapula origin

A

Transverse processes of upper cervicals

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25
Q

Levator scapula insertion

A

Superior angle of scapula

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26
Q

Levator scapula action

A

Elevates scapula, adducts scapula, stabilizes scapula.

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27
Q

Levator scapula nerve

A

Dorsal scapular nerve

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28
Q

Latissimus dorsi origin

A

Spine of lower thoracic and lumbar vertebrae. Thoracodorsal fascia. Crest of ilium.

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29
Q

Latissimus dorsi insertion

A

Intertubercular groove to lesser tubercle

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30
Q

Latissimus dorsi action

A

Extends, adducts, and medially rotates humerus. Involved in forced expiration.

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31
Q

Latissimus dorsi nerve

A

Thoracodorsal nerve

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32
Q

Serratus anterior origin

A

Upper ribs

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33
Q

Serratus anterior insertion

A

Vertebral Border of scapula

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34
Q

Serratus anterior action

A

Abduction/ protraction of scapula. Stabilizes scapula. Involved with forced inspiration when humerus is abducted.

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35
Q

Serratus anterior nerve

A

Long thoracic nerve

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36
Q

Deltoid origin

A

Anterior portion from clavicle. Middle from acromion process of scapula. Posterior from spine of scapula

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37
Q

Deltoid Insertion

A

Deltoid tuberosity of humerus

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38
Q

Deltoid action

A

Anterior: flexes and medially rotates arm. Middle: abducts arm. Posterior: extends and laterally rotates arm.

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39
Q

Deltoid nerve

A

Axillary nerve

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40
Q

Supraspinatus origin

A

Supraspinous fossa of scapula

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41
Q

Supraspinatus insertion

A

Greater tubercle of humerus

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42
Q

Supraspinatus action

A

Initiates abduction of arm. Laterally rotates humerus. Helps stabilize shoulder joint.

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43
Q

Supraspinatus nerve

A

Suprascapular nerve

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44
Q

Infraspinatus origin

A

Infraspinous fossa of scapula

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45
Q

Infraspinatus insertion

A

Greater tuberosity of humerus

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46
Q

Infraspinatus action

A

Laterally rotates humerus, stabilizes shoulder joint.

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47
Q

Infraspinatus nerve

A

Suprascapular nerve

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48
Q

Subscapularis origin

A

Subscapular fossa of scapula

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49
Q

Subscapularis insertion

A

Lesser tuberosity of humerus

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50
Q

Subscapularis action

A

Medially rotates humerus, stabilizes shoulder joint.

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51
Q

Subscapularis nerve

A

Upper and lower subscapular nerve

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52
Q

Teres major origin

A

Inferior angle of scapula

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53
Q

Teres major insertion

A

Intertubercular groove to lesser tuberosity

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54
Q

Teres major action

A

Adducts humerus. Stabilizes scapula. Medially rotates humerus.

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55
Q

Teres major nerve

A

Lower subscapular nerve

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56
Q

Teres minor origin

A

Axillary Border of scapula

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57
Q

Teres minor insertion

A

Greater tuberosity of humerus

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58
Q

Teres minor action

A

Laterally rotates humerus. Stabilizes shoulder joint

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59
Q

Teres minor nerve

A

Axillary nerve

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60
Q

Biceps brachii origin

A

Short head: coracoid process of scapula. Long head: supraglenoid tubercle of scapula.

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61
Q

Biceps brachii insertion

A

Tuberosity of radius, shaft of ulna

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62
Q

Biceps brachii action

A

Flexes forearm, supinates radius

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63
Q

Biceps brachii nerve

A

Musculocutaneous nerve

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64
Q

Coracobrachialis origin

A

Coracoid process of scapula

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65
Q

Coracobrachialis insertion

A

Shaft of humerus

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66
Q

Coracobrachialis action

A

Flexion and weak adduction of arm. Stabilizes shoulder joint.

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67
Q

Coracobrachialis nerve

A

Musculocutaneous nerve

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68
Q

Brachialis origin

A

Shaft of humerus

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69
Q

Brachialis insertion

A

Coronoid process of ulna

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70
Q

Brachialis action

A

Flexes forearm

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71
Q

Brachialis nerve

A

Musculocutaneous nerve

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72
Q

Triceps brachii origin

A

Long head: infraglenoid tubercle of scapula. Lateral/medial: shaft of humerus.

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73
Q

Triceps brachii insertion

A

Olecranon process of ulna

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74
Q

Triceps brachii action

A

Extension of forearm

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75
Q

Triceps brachii nerve

A

Radial nerve

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76
Q

Pronator Teres origin

A

Medial epicondyle of humerus. Coronoid process of ulna

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77
Q

Pronator Teres insertion

A

Pronator ridge of radius

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78
Q

Pronator Teres action

A

Pronates forearm at superior radio-ulnar joint. Assists in elbow flexion.

79
Q

Pronator Teres nerve

A

Median nerve

80
Q

Flexor Carpi radialis origin

A

Medial epicondyle of humerus

81
Q

Flexor Capri radialis insertion

A

2nd metacarpal w/small slip to 3rd metacarpal

82
Q

Flexor carpi radialis action

A

Flexion of hand at wrist joint. Assists in abduction of hand

83
Q

Flexor carpi radialis nerve

A

Median nerve

84
Q

Palmaris longus origin

A

Medial epicondyle of humerus

85
Q

Palmaris longus insertion

A

Palmar aponeurosis

86
Q

Palmaris longus action

A

Helps flex hand. Helps with grip. Tightens fascia of Palm.

87
Q

Palmaris longus nerve

A

Median nerve

88
Q

Flexor carpi ulnaris origin

A

Medial epicondyle of humerus. Olecranon process of ulna

89
Q

Flexor carpi ulnaris insertion

A

Pisiform, hamate, 5th metacarpal.

90
Q

Flexor carpi ulnaris action

A

Flexes hand at wrist joint. Adducts hand

91
Q

Flexor carpi ulnaris nerve

A

Ulnar nerve

92
Q

Flexor digitorum superficialis origin

A

Medial epicondyle of humerus

93
Q

Flexor digitorum superficialis insertion

A

Middle phalanges of digits 2-5

94
Q

Flexor digitorum superficialis action

A

Flexes the pip joints of digits 2-5. Helps flex hand.

95
Q

Flexor digitorum superficialis nerve

A

Median nerve

96
Q

Flexor digitorum profundus origin

A

Shaft of ulna

97
Q

Flexor digitorum profundus insertion

A

Distal phalanges of digits 2-5.

98
Q

Flexor digitorum profundus action

A

Flexes the dip joints of 2-5. Helps flex hand

99
Q

Flexor digitorum profundus nerve

A

Ulnar and median nerve

100
Q

Flexor pollicis longus origin

A

Shaft of ulna

101
Q

Flexor pollicis longus insertion

A

Distal phalanx of digit 1

102
Q

Flexor pollicis longus action

A

Flexes the thumb at IP joint

103
Q

Flexor pollicis longus nerve

A

Median nerve

104
Q

Pronator quadratus origin

A

Shaft of ulna

105
Q

Pronator quadratus insertion

A

Shaft of radius

106
Q

Pronator quadratus action

A

Pronates forearm at inferior radio-ulnar joint. Helps stabilize the inferior radio-ulnar joint.

107
Q

Pronator quadratus nerve

A

Median nerve

108
Q

Brachioradialis origin

A

Lateral supracondylar ridge of humerus

109
Q

Brachioradialis insertion

A

Styloid process of radius

110
Q

Brachioradialis action

A

Helps flex forearm, pronates and supinates forearm.

111
Q

Brachioradialis nerve

A

Radial nerve

112
Q

Extensor carpi radialis longus origin

A

Lateral epicondyle of humerus

113
Q

Extensor carpi radialis longus insertion

A

2nd metacarpal

114
Q

Extensor carpi radialis longus action

A

Extend and abduct the hand

115
Q

Extensor carpi radialis longus nerve

A

Radial nerve

116
Q

Extensor carpi radialis brevis origin

A

Lateral epicondyle of humerus

117
Q

Extensor carpi radialis brevis insertion

A

3rd metacarpal

118
Q

Extensor carpi radialis brevis action

A

Extend and abduct hand

119
Q

Extensor carpi radialis brevis nerve

A

Radial nerve

120
Q

Extensor digitorum Maximus origin

A

Lateral epicondyle of humerus

121
Q

Extensor digitorum Maximus insertion

A

Middle phalanx of digits 2-5

122
Q

Extensor digitorum Maximus action

A

Extends digits 2-5, extends hand. Abducts digits 2-5

123
Q

Extensor digitorum Maximus nerve

A

Radial nerve

124
Q

Extensor digiti minimi origin

A

Lateral epicondyle of humerus

125
Q

Extensor digiti minimi insertion

A

Proximal phalanx of digit 5

126
Q

Extensor digiti minimi action

A

Extend digit 5

127
Q

Extensor digiti minimi nerve

A

Radial nerve

128
Q

Extensor carpi ulnaris origin

A

Lateral epicondyle of humerus

129
Q

Extensor carpi ulnaris insertion

A

5th metacarpal

130
Q

Extensor carpi ulnaris action

A

Extend and adduct hand

131
Q

Supinator origin

A

Lateral epicondyle of humerus. Supinator crest of ulna.

132
Q

Supinator insertion

A

Shaft of radius

133
Q

Supinator action

A

Supinates forearm

134
Q

Supinator nerve

A

Radial nerve

135
Q

Abductor pollicis longus origin

A

Shaft of ulna and radius

136
Q

Abductor pollicis longus insertion

A

1st metacarpal.

137
Q

Abductor pollicis longus action

A

Abducts digit 1 at CM joint

138
Q

Abductor pollicis longus nerve

A

Radial nerve

139
Q

Extensor pollicis brevis origin

A

Shaft of radius

140
Q

Extensor pollicis brevis insertion

A

Proximal phalanx of digit 1

141
Q

Extensor pollicis brevis action

A

Extends digit 1 at MP joint

142
Q

Extensor pollicis brevis nerve

A

Radial nerve

143
Q

Extensor pollicis longus origin

A

Shaft of ulna

144
Q

Extensor pollicis longus insertion

A

Distal phalanx of digit 1

145
Q

Extensor pollicis longus action

A

Extend digit 1 at IP joint

146
Q

Extensor pollicis longus nerve

A

Radial nerve

147
Q

Extensor indicis origin

A

Shaft of ulna

148
Q

Extensor indicis insertion

A

Proximal phalanx of digit 2

149
Q

Extensor indicis action

A

Extend digit 2 at MP joint

150
Q

Extensor indicis nerve

A

Radial nerve

151
Q

Anconeus origin

A

Lateral epicondyle of humerus

152
Q

Anconeus insertion

A

Olecranon process of ulna

153
Q

Anconeus action

A

Extend forearm

154
Q

Anconeus nerve

A

Radial nerve

155
Q

Abductor pollicis brevis origin

A

Trapezium and scaphoid

156
Q

Abductor pollicis brevis insertion

A

Proximal phalanx of digit 1

157
Q

Abductor pollicis brevis action

A

Abducts digit 1 at MP joint

158
Q

Abductor pollicis brevis nerve

A

Median nerve

159
Q

Opponens pollicis origin

A

Trapezium

160
Q

Opponens pollicis insertion

A

1st metacarpal

161
Q

Opponens pollicis action

A

Medially rotates 1st metacarpal

162
Q

Opponens pollicis nerve

A

Median nerve

163
Q

Flexor pollicis brevis origin

A

Trapezium, trapezoid, capitate

164
Q

Flexor pollicis brevis insertion

A

Proximal phalanx of digit 1

165
Q

Flexor pollicis brevis action

A

Flexes digit 1 at MP joint

166
Q

Flexor pollicis brevis nerve

A

Ulnar and median nerve

167
Q

Adductor pollicis origin

A

Trapezoid, capitate, 2nd and 3rd metacarpals.

168
Q

Adductor pollicis insertion

A

Proximal phalanx of digit 1

169
Q

Adductor pollicis action

A

Adducts digit 1

170
Q

Adductor pollicis nerve

A

Ulnar nerve

171
Q

Abductor digiti minimi origin

A

Pisiform

172
Q

Abductor digiti minimi insertion

A

Proximal phalanx of digit 5

173
Q

Abductor digiti minimi action

A

Abducts digit 5

174
Q

Abductor digiti minimi nerve

A

Ulnar nerve

175
Q

Flexor digiti minimi origin

A

Hamate

176
Q

Flexor digiti minimi insertion

A

Proximal phalanx of digit 5

177
Q

Flexor digiti minimi action

A

Flexes digit 5 at MP joint

178
Q

Flexor digiti minimi nerve

A

Ulnar nerve

179
Q

Opponens digiti minimi origin

A

Hamate

180
Q

Opponens digiti minimi insertion

A

5th metacarpal

181
Q

Opponens digiti minimi action

A

Laterally rotates 5th metacarpal

182
Q

Opponens digiti minimi nerve

A

Ulnar nerve

183
Q

Lumbricales origin

A

Tendons of flexor digitorum profundus

184
Q

Lumbricales insertion

A

Tendons of the extensor digitorum Maximus

185
Q

Lumbricales action

A

Flexes the MP joint, extends the IP joint

186
Q

Lumbricales nerve

A

1 and 2 Lumbricales- median nerve. 3 and 4 Lumbricales- ulnar nerve.

187
Q

Dorsal interossei origin

A

2,3,4 metacarpals

188
Q

Dorsal interossei insertion

A

Proximal phalanx of digits 2,3,4

189
Q

Dorsal interossei action

A

Abducts digits 2-4. Flexes MP, extends IP joints

190
Q

Dorsal interossei nerve

A

Ulnar nerve

191
Q

Palmar interossei origin

A

2,3,4,5 metacarpals

192
Q

Palmar interossei insertion

A

Proximal phalanx of digits 2,4,5

193
Q

Palmar interossei action

A

Adducts digits 2,4,5. Flexes MP and extends IP joints.

194
Q

Palmar interossei nerve

A

Ulnar nerve

Gross Anatomy 2nd Exam (1 decks)

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