UE Muscles Flashcards
1
Q
Sternocleidomastoid Action
A
Ipsilateral Side bending of head with rotation to opposite
Bilateral- neck flexion, extension at O-A joint
2
Q
Sternocleidomastoid Insertion
A
Mastoid Process of Temporal Bone, lateral half of superior Nuchal line
3
Q
Sternocleidomastoid Origin
A
Sternal Head, anterior surface of manubrium of sternum. Clavicular Head; superior surface of medial 1/3 clavicle
4
Q
Sternocleidomastoid Innervation
A
CN XI (Motor), Ventral Rami C2-C3 (Sensory)
5
Q
Levator Scapulae Action
A
Elevates Scapula
Downward Rotation of Scapula
6
Q
Levator Scapulae Origin
A
Transverse Process of C1-C4
7
Q
Levator Scapula Insertion
A
Superior Aspect of Medial Border of Scapula
8
Q
Levator Scapulae Innervation
A
Dorsal Scapular Nerve (C5), C3-C4 Ventral Rami
9
Q
Upper Trapezius Action
A
Upwardly rotates with lower trapezius
Elevate and Retract Scapula
10
Q
Upper Trapezius Origin
A
Medial 1/3 superior Nuchal line; Occipital Protuberance to C7, ligamentum nuchae
11
Q
Upper Trapezius Insertion
A
Lateral 1/3 of Clavicle
12
Q
Upper Trapezius Innervation
A
CN XI (Motor), Ventral Rami C3-C4 (Sensory)
13
Q
Middle Trapezius Action
A
Retract Scapula
14
Q
Middle Trapezius Origin
A
C7-T4 Spinous Process
15
Q
Middle Trapezius Insertion
A
Acromion and Crest of Spine of Scapula
16
Q
Middle Trapezius Innervation
A
CN XI (Motor), Ventral Rami C3-C4 (Sensory)
17
Q
Lower Trapezius Action
A
Upwardly Rotates with upper trapezius
Depress, Retract Scapula
18
Q
Lower Trapezius Origin
A
T4-T12 Spinous Process
19
Q
Lower Trapezius Insertion
A
Spine of Scapula
20
Q
Lower Trapezius Innervation
A
CN XI (Motor), Ventral Rami C3-C4 (Sensory)
21
Q
Serratus Anterior Action
A
Protract Scapula, and holds it against thoracic wall
Upward Rotation of Scapula
22
Q
Serratus Anterior Origin
A
Lateral Surface of Ribs 1-8
23
Q
Serratus Anterior Insertion
A
Anterior Surface of Medial Border of Scapula
24
Q
Serratus Anterior Innervation
A
Long Thoracic Nerve, C5, C6, C7
25
Pectoralis Major Action
Adduction and Internal Rotation of Humerus
Clavicular Head Alone- Flexes Humerus
Sternocostal Head Alone- Extends Humerus from overhead positions; horizontal addiction at G/H Joint
26
Pectoralis Major Origin
Clavicular Head- Anterior Surface of medial 1/2 of clavicle
Sternocostal Head- Anterior Surface of Sternum, upper 6 costal cartilages and aponeurosis of External Oblique
27
Pectoralis Major Insertion
Lateral Lip of Intertubercular Groove of Humerus
28
Pectoralis Major Innervation
Lateral and Medial Pectoral Nerves
Clavicular- C5-C6
Sternocostal- C7, C8-T1
29
Pectoralis Minor Action
Stabilizes Scapula by drawing it inferiorly and anteriorly against Thoracic Wall
30
Pectoralis Minor Origin
3rd to 5th Ribs near costal cartilages
31
Pectoralis Minor Insertion
Medial Border and Superior Surface of Coracoid Process of Scapula
32
Pectoralis Minor Innervation
Medial and Lateral Pectoral Nerve (C6, C7, C8)
33
Anterior Deltoid Action
Abduction, Flexion, internal Rotation of Humerus
34
Anterior Deltoid Origin
Lateral 1/3 of Clavicle (Anterior Surface)
35
Anterior Deltoid Insertion
Deltoid Tuberosity of Humerus
36
Anterior Deltoid Innervation
Axillary Nerve (C5-C6)
37
Middle Deltoid Action
Abduction of Humerus
38
Middle Deltoid Origin
Lateral Aspect of Acromion
39
Middle Deltoid Insertion
Deltoid Tubersoity
40
Middle Deltoid Innervation
Axillary Nerve (C5-C6)
41
Posterior Deltoid Action
Extension, External Rotation, and Abduction of Humerus
42
Posterior Deltoid Origin
Inferior Lip of Crest of Spine of Scapula
43
Posterior Deltoid Insertion
Deltoid Tuberosity
44
Posterior Deltoid Innervation
Axillary Nerve (C5-C6)
45
Supraspinatus Action
Initiates and Assists Deltoid in Abduction of Humerus; Holds head in Glenoid Cavity (Rotator Cuff)
46
Supraspinatus Origin
Supraspinous Fossa of Scapula
47
Supraspinatus Insertion
Superior facet on greater tubercle of humerus
48
Supraspinatus Innervation
Suprascapular Nerve (C4, C5, C6)
49
Infraspinatus Action
External Rotation of Humerus
Holds Humeral Head in Glenoid (Rotator Cuff)
50
Infraspinatus Origin
Infraspinous Fossa of Scapula
51
Infraspinatus Insertion
Middle Facet Greater Tubercle of Humerus
52
Infraspinatus Innervation
Suprascapular Nerve (C5-C6)
53
Teres Minor Action
External Rotation of Humerus
54
Teres Minor Origin
Middle Part of Lateral Border of Scapula
55
Teres Minor Insertion
Inferior Facet on Greater Tubercle of Humerus
56
Teres Minor Innervation
Axillary Nerve (C5-C6)
57
Subscapularis Action
Internal Rotation, Adduction of Humerus
Holds Head of Humerus in Place (Rotator Cuff)
58
Subscapularis Origin
Subscapular Fossa
59
Subscapularis Insertion
Lesser Tubercle of Humerus
60
Subscapularis Innervation
Upper and Lower Subscapular Nerves
61
Teres Major Action
Extension, Adduction, Internal Rotation of Humerus
62
Teres Major Origin
Dorsal Surface of Inferior Angle of Scapula
63
Teres Major Insertion
Medial Lip of Intertubercular Groove of Humerus
64
Teres Major Innervation
Lower Subscapular Nerve (C5-C6)
65
Rhomboid Major Action
Retract Scapula, Elevate Scapula, Downward Rotation of Scapula
Fix Scapula against Thoracic Wall
66
Rhomboid Major Origin
Spinous Processes of T2-T5
67
Rhomboid Major Insertion
Medial Border of Scapula from Spine to Inferior Angle
68
Rhomboids Major Innervation
Dorsal Scapular Nerve (C4-C5)
69
Rhomboid Minor Action
Retract Scapula, Elevate Scapula, downward rotation of scapula
Fix Scapula against Thoracic Wall
70
Rhomboid Minor Origin
Nuchal Ligament and Spinous Processes of C7 and T1
71
Rhomboid Minor Insertion
Medial Border of Scapula at level of the spine
72
Rhomboid Minor Innervation
Dorsal Scapular Nerve (C4 and C5)
73
Latissimus Dorsi Action
Extension, Adduction, Internal Rotation of Humerus
74
Latissimus Dorsi Origin
Thoracolumbar Fascia, Spinous Process T6-T12, inferior 3 or 4 ribs, iliac crest
75
Latissimus Dorsi Insertion
Floor of Intertubercular Groove of Humerus
76
Latissimus Dorsi Innervation
Thoracodorsal Nerve (C6, C7, C8)
77
Coracobrachialis Action
Flexion, Adduction of Humerus
78
Coracobrachialis Origin
Tip or Apex of coracoid process of Scapula
79
Coracobrachialis Insertion
Middle 1/3 of medial Humerus
80
Coracobrachialis Innervation
Musculotaneous Nerve (C5, C6)
81
Biceps Brachii Action
Long Head- Weak Shoulder Flexion, Weak Abduction and External Rotation of Humerus
Both- Elbow Flexion with Forearm Supination
82
Biceps Brachii Origin
Short Head- Coracoid Process of Scapula
Long Head- Supraglenoid Tubercle of Scapula
83
Biceps Brachii Insertion
Radial Tuberosity and Fascia of Forearm via Bicipital Aponeurosis
84
Biceps Brachii Innervation
Musculotaneous Nerve (C5-C6)
85
Brachialis Action
Elbow Flexion Regardless of Position
86
Brachialis Origin
Distal Half Humerus, anterior surface
87
Brachialis Insertion
Ulnar Tuberosity and anterior aspect coronoid process of Ulna
88
Brachialis Innervation
Musculotaneous Nerve (C5, C6)
89
Brachioradialis Action
Elbow Flexion (Midpronation Most Effective)
90
Brachioradialis Origin
Proximal 2/3 of Lateral Supracondylar Ridge of Humerus
91
Brachioradialis Insertion
Lateral Surface of Distal End of Radius
92
Brachioradialis Innervation
Radial Nerve (C5, C6, C7)
93
Triceps Action
All Heads- Elbow Extension
Long Head- Steadies Head of Abducted Humerus
94
Triceps Origin
Long Head- Infraglenoid Tubercle of Scapula
Lateral Head- Posterior Surface of Humerus, Superior to Radial Groove
Medial Head- Posterior Surface of Humerus, inferior to radial groove
95
Triceps Insertion
Proximal End of Olecranon Process of Ulna and Fascia of Forearm
96
Triceps Innervation
Radial Nerve (C6, C7, C8)
97
Pronator Teres Action
Pronates Forearm, Flexes Elbow
98
Pronator Teres Origin
Humeral Head- Medial Epicondyle of Humerus
Ulnar Head- Coronoid Process of Ulna
99
Pronator Teres Insertion
Middle of Lateral Surface of Radius
100
Pronator Teres Innervation
Median Nerve (C6, C7)
101
Pronator Quadratus Action
Pronates Forearm
102
Pronator Quadratus Origin
Distal 1/4 of Anterior Surface of Ulna
103
Pronator Quadratus Insertion
Distal 1/4 Anterior Surface of Radius
104
Pronator Quadratus Innervation
Anterior Interosseous Nerve (From Median Nerve) (C8-T1)
105
Supinator Action
Supinates Forearm
106
Supinator Origin
Lateral Epicondyle of Humerus, Radial Collateral and Annular Ligaments, Supinator fossa, and crest of Ulna
107
Supinator Insertion
Proximal Radius, Anterior, Lateral, Posterior Surfaces
108
Supinator Innervation
Deep Branch Radial Nerve (C7, C8)
109
Extensor Carpi Radialis Longus Action
Extension and Abduction of Hand at Wrist Joint
110
Extensor Carpi Radialis Longus Origin
Lateral Supracondylar Ridge of Humerus
111
Extensor Carpi Radialis Longus Insertion
Base of 2nd Metacarpal Bone
112
Extensor Carpi Radialis Longus Innervation
Radial Nerve (C6, C7)
113
Extensor Carpi Radialis Brevis Action
Extension and Abduction of Hand at Wrist Joint
114
Extensor Carpi Radialis Brevis Origin
Lateral Epicondyle of Humerus
115
Extensor Carpi Radialis Brevis Insertion
Base of 3rd Metacarpal
116
Extensor Carpi Radialis Brevis Innervation
Deep Branch of Radial Nerve (C7, C8)
117
Extensor Digitorum Action
Extension of Medial 4 Digits at Metacarpophalangeal (MCP) Joint, Assists with Extension at Interphalangeal (IP) Joint
Extension of Hand at Wrist Joint
118
Extensor Digitorum Origin
Lateral Epicondyle of Humerus
119
Extensor Digitorum Insertion
Base of Middle Phalanges of fingers of medial 4 digits via extensor expansion
120
Extensor Digitorum Innervation
Post Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)
121
Extensor Digiti Minimi Action
Extension of 5th Digit at Metacarpophalangeal (MCP) Joint and Interphalangeal (IP) Joint
122
Extensor Digiti Minimi Origin
Lateral Epicondyle of Humerus
123
Extensor Digiti Minimi Insertion
Extensor Expansion of 5th Digit
124
Extensor Digiti Minimi Innervation
Post Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)
125
Extensor Carpi Ulnaris Action
Extension and Adduction of Hand at Wrist
126
Extensor Carpi Ulnaris Origin
Lateral Epicondyle of Humerus and Posterior Border of Ulna
127
Extensor Carpi Ulnaris Insertion
Base of 5th Metacarpal
128
Extensor Carpi Ulnaris Innervation
Post Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)
129
Abductor Policis Longus Action
Abduction of Thumb and Extension of Thumb at Carpometacarpal (CMC) Joint
130
Abductor Pollicis Longus Origin
Posterior Surface of Proximal Halves of Ulna, Radius, and Interosseous Membrane
131
Abductor Pollicis Longus Insertion
Base of 1st Metacarpal
132
Abductor Pollicis Longus Innervation
Posterior Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)
133
Extensor Pollicis Brevis Action
Extension of Proximal Phalanx of Thumb at Metacarpophalangeal (MCP) Joint
Extension at Carpometacarpal Joint
134
Extensor Pollicis Brevis Origin
Posterior Surface of Radius and Interosseous Membrane
135
Extensor Pollicis Brevis Insertion
Dorsal Aspect Base of Proximal Phalanx of Thumb
136
Extensor Pollicis Brevis Innervation
Posterior Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)
137
Extensor Pollicis Longus Action
Extension of Distal Phalanx of Thumb at Interphalangeal (IP) Joint
Extension of Metacarpophalangeal (MCP) Joint and Carpometacarpal (CMC) Joint
138
Extensor Pollicis Longus Origin
Posterior Surface of Middle 1/3 of Ulna and Interrosseous Membrane
139
Extensor Pollicis Longus Insertion
Base of Distal Phalanx of Thumb
140
Extensor Pollicis Longus Innervation
Posterior Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)
141
Extensor Indicis Action
Extension of 2nd Digit
Assists with Wrist Extension
142
Extensor Indicis Origin
Posterior Surface of Distal 1/3 of Ulna and Interosseous Membrane
143
Extensor Indicis Insertion
Extensor Expansion of 2nd Digit
144
Extensor Indicis Innervation
Posterior Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)
145
Flexor Carpi Radialis Action
Flexion and Abduction of Hand at the Wrist
146
Flexor Carpi Radialis Origin
Medial Epicondyle of Humerus
147
Flexor Carpi Radialis Insertion
Base of 2nd and 3rd Metacarpal
148
Flexor Carpi Radialis Innervation
Median Nerve (C6, C7)
149
Flexor Carpi Ulnaris Action
Flexion and Adduction of Hand at Wrist
150
Flexor Carpi Ulnaris Origin
Humeral Head- Medial Epicondyle of Humerus
Ulnar Head- Olecranon and Posterior Border of Ulna
151
Flexor Carpi Ulnaris Insertion
Pisiform, Hook of Hamate and Base of 5th Metacarpal
152
Flexor Carpi Ulnaris Innervation
Ulnar Nerve (C7, C8)
153
Palmaris Longus Action
Assists with Wrist Flexion
Tense Palmar Aponeurosis
154
Palmaris Longus Origin
Medial Epicondyle of humerus from common flexor origin
155
Palmaris Longus Insertion
Distal 1/2 of Flexor Retinaculum and Palmar Aponeurosis
156
Palmaris Longus Innervation
Median Nerve (C7, C8)
157
Flexor Digitorum Superficialis Action
Flexes Proximal Interphalangeal (PIP) Joints of medial 4 digits
Flexes Metacarpophalangeal (MCP) Joint and assists in wrist flexion
158
Flexor Digitorum Superficialis Origin
Humeroulnar Head- Medial Epicondyle of Humerus, ulnar collateral ligament, coronoid process of ulna
Radial Head- Superior 1/2 of anterior border of radius
159
Flexor Digitorum Superficialis Insertion
Bodies of Middle Phalanges of Medial 4 digits
160
Flexor Digitorum Superficialis Innervation
Median Nerve (C7-T1)
161
Flexor Digitorum Profundus Action
Distal Interphalangeal (DIP) Joint Flexion of medial 4 digits. Also flexes Metacarpophalangeal (MCP) Joint and assists in wrist flexion
162
Flexor Digitorum Profundus Origin
Proximal 3/4 of medial and anterior surface of ulna and Interosseous membrane
163
Flexor Digitorum Profundus Insertion
Bases of Distal Phalanges of medial 4 digits
164
Flexor Digitorum Profundus Innervation
Anterior Interosseous Nerve (From Median Nerve) C8-T1 to lateral 2 FDP
Ulnar Nerve C8-T1 to medial 2 FDP
165
Flexor Pollicis Longus Action
Flexes Interphalangeal (IP) Joint, Metacarpophalangeal (MCP) Joint, Carpometacarpal (CMC) Joint of Thumb
166
Flexor Pollicis Longus Origin
Anterior Surface of Radius and Interosseous membrane
167
Flexor Pollicis Longus Insertion
Base of Distal Phalanx of Thumb
168
Flexor Pollicis Longus Innervation
Anterior Interosseous Nerve (From Median Nerve) C8-T1
169
Abductor Pollicis Brevis Action
Abduction of Thumb
Assists Thumb Opposition
170
Abductor Pollicis Brevis Origin
Flexor Retinaculum and Tubercles of Scaphoid and Trapezium
171
Abductor Pollicis Brevis Insertion
Lateral side of base of proximal phalanx of thumb and extensor expansion
172
Abductor Pollicis Brevis Innervation
Recurrent branch of Medial Nerve (C8-T1)
173
Flexor Pollicis Brevis (2 Heads) Action
Flexes Thumb
174
Flexor Pollicis Brevis Origin
Flexor Retinaculum and Tubercles of Scaphoid and Trapezium
175
Flexor Pollicis Brevis Insertion
Lateral side of base of proximal phalanx of thumb
176
Flexor Pollicis Brevis Innervation
Superficial Head- Recurrent branch (Median Nerve) (C8,T1)
Deep Head- Deep Branch of Ulnar Nerve (C8, T1)
177
Opponens Pollicis Action
Oppose Thumb
178
Opponens Pollicis Origin
Flexor Retinaculum and Tubercles of Scaphoid and Trapezium
179
Opponens Pollicis Insertion
Lateral Aspect of 1st Metacarpal
180
Opponens Pollicis Innervation
Recurrent Branch of Median Nerve (C8, T1)
181
Adductor Pollicis (2 Heads) Action
Adduction of Thumb
182
Adductor Pollicis Origin
Oblique- Base of 2nd and 3rd Metacarpal, capitate and carpals
Transverse- Anterior Surface of Shaft of 3rd Metacarpal
183
Adductor Pollicis Insertion
Medial Side of Base of Proximal Phalanx of Thumb
184
Adductor Pollicis Innervation
Deep Branch of Ulnar Nerve (C8, T1)
185
Abductor Digiti Minimi Action
Abducts 5th Digit
Assists Flexion of 5th Proximal Phalanx
186
Abductor Digiti Minimi Origin
Pisiform
187
Abductor Digiti Minimi Insertion
Medial Side Base of Proximal Phalanx of 5th Digit
188
Abductor Digiti Minimi Innervation
Deep Branch Ulnar Nerve (C8, T1)
189
Flexor Digiti Minimi Brevis Action
Flexes Proximal Phalanx of 5th Digit
190
Flexor Digiti Minimi Brevis Origin
Hook of Hamate and Flexor Retinaculum
191
Flexor Digiti Minimi Brevis Insertion
Medial Side base of proximal phalanx of 5th digit
192
Flexor Digiti Minimi Brevis Innervation
Deep Branch of Ulnar Nerve (C8, T1)
193
Opponens Digiti Minimi Action
Draws 5th Metacarpal Anteriorly to oppose the thumb
194
Opponens Digiti Minimi Origin
Hook of Hamate and Flexor Retinaculum
195
Opponens Digiti Minimi Insertion
Medial Border of 5th Metacarpal
196
Opponens Digiti Minimi Innervation
Deep Branch of Ulnar Nerve (C8, T1)
197
Lumbricals 1 and 2 Action
Flex Metacarpal Joints and extend Interphalangeal Joints
198
Lumbricals 1 and 2 Origin
Lateral 2 tendons of Flexor Digitorum Profundus
199
Lumbricals 1 and 2 Insertion
Lateral Sides of Extensor Expansion of Digits 2-5
200
Lumbricals 1 and 2 Innervation
Median Nerve (C8, T1)
201
Lumbricals 3 and 4 Action
Flex metacarpal Joints and Extend Interphalangeal Joints
202
Lumbricals 3 and 4 Origin
Bipennate from medial 3 tendons flexor Digitorum Profundus
203
Lumbricals 3 and 4 Insertion
Lateral Sides of Extensor Expansion of Digits 2-5
204
Lumbricals 3 and 4 Innervation
Deep Branch of Ulnar Nerve (C8, T1)
205
Palmar Interossei Action
Adductor 2nd, 4th, and 5th digit towards midline, assists with metacarpal flexion, and Interphalangeal extension
206
Palmar Interossei Origin
Palmar Surfaces of 2nd, 4th, and 5th Metacarpal
207
Palmar Interossei Insertion
Base of Proximal Phalanges and Extension Expansion of 2nd, 4th, and 5th digits
208
Palmar Interossei Innervation
Deep Branch of Ulnar Nerve (C8, T1)
209
Dorsal Interossei Action
Abduct Digits 2-4 away from midline, assist with MCP Flexion, IP Extension
210
Dorsal Interossei Origin
Bipennate adjacent sides of Metacarpals
211
Dorsal Interossei Insertion
Base of Proximal Phalanges and Extension expansions of 2nd, 4th, and 5th Digits
212
Dorsal Interossei Innervation
Deep Branch of Ulnar Nerve (C8, T1)
