Lab Muscles Flashcards
1
Q
trapezius proximal attachment
A
medial 1/3 of superior nuchal lne
external occiptal protuberance
ligamentum nuchae
c7-t12 spinous process
2
Q
trapezius distal attachment
A
lateral 1/3 of clavicle
acromion
scapular spine
3
Q
trapezius action
A
elevates, depresses, retracts scapula
rotates glenoid fossa superiorly
steadies scapula to thoracic wall
unilaterally flexes to the same side
4
Q
trapezius innervation
A
CN XI (motor)
c3
c4 (pain and proprioception)
5
Q
trapezius blood supply
A
transverse cervical artery
6
Q
latissimus dorsi proximal attachment
A
t7 - t12 spinous processes
thoracolumbar fascia
inferior scapular angle
ribs 9-12
7
Q
latissimus dorsi distal attachment
A
floor of inter tubercular groove (humerus)
8
Q
latissimus dorsi action
A
etends, adducts, medially rotates shoulder
raises body toward arms during climbing
9
Q
latissimus dorsi innervation
A
c6-c8
10
Q
latissimus dorsi supply
A
thoracodorsal artery
11
Q
levator scapulae proximal attachment
A
c1-c4 transverse processes
12
Q
levator scapulae distal attachment
A
superior angle of scapula
13
Q
levator scapulae action
A
elevates scapula,
rotates glenoid fossa inferiorly
unilaterally flexes neck to same side
14
Q
levator scapulae innervation
A
c5, c3,c4
15
Q
levator scapulae blood supply
A
dorsal scapular artery
16
Q
rhomboid major proximal attachment
A
t2-t5 spinous processes
17
Q
rhomboid major distal attachment
A
medial border of scapula (below scapular spine)
18
Q
rhomboid major action
A
retracts scapula
rotates glenoid fossa inferiorly
steadies scapula to thoracic wall
19
Q
rhomboid major innervation
A
c5
20
Q
rhomboid major blood supplu
A
dorsal scapular artery
21
Q
rhomboid minor proximal attachment
A
ligamentum nuchae
c7-t1 spinous processes
22
Q
rhomboid minor distal attachment
A
medial border of scapula (at root of scapular spine)
23
Q
rhomboid minor action
A
elevates scapula and unilaterally inclines neck to same side
retracts scapula
rotates glenoid fossa inferiorly
steadies scapula to thoracic wall
24
Q
rhomboid minor innervation
A
c5
25
rhomboid minor blood supply
dorsal scapular artery
26
serraruts posterior superior proximal attachment
ligamentum nuchae
| c7-t3 spinous processes
27
serratus posterior superior distal attachment
ribs 2-4
28
serratus posterior superior action
proprioception
29
serratus posterior superior innervation
anterior rami t2-t5 thoracic spinal n
30
serratus posterior superior bloody supply
intercostal aa
31
serratus posterior inferior proximal attachment
t11-l2 spinous processes
32
serratus posterior inferior distal attachment
ribs 8-12
33
serratus posterior inferior action
proprioception
34
serratus posterior inferior bloody supply
intercostal aa
subcostal artery
lumbar aa
35
Splenius cervicis proximal attachment
T3-t6 spinous processes
36
Splenius cervicis distal attachment
C1 -c3 transverse processes
37
Splenius cervicis action
Bilaterally extend neck
| Unilaterally flexes and rotates neck to same side
38
Splenius cervicis innervation
Posterior rami of spinal nerves
39
Splenius cervicis blood supply
Occipital, transverse cervical, and intercostal aa
40
Splenius capitis proximal attachment
Ligamentum nuchae,
| C7 to t4 spinous processes
41
Splenius capitis distal attachment
Mastoid processes
| Lateral 1/3 superior nucal line
42
Splenius capitis action
Bilaterally extends neck
| Unilaterally flexes and rotates neck to same side
43
Splenius capitis innervation
Posterior rami of spinal nerves
44
Splenius capitis blood supply
Occipital and transverse cervical aa
45
Iliocostalis proximal attachment
Broad tendon from iliac crest, sacrum, lumbar and lower thoracic spinous processes
46
Iliocostalis distal attachment
Angles of lower ribs and cervical transverse processes
47
Iliocostalis action
Bilaterally extend spine / head
| Unilaterally flexes spine / head to same side
48
Iliocostalis innervation
Segmentally innervated by posterior rami of spinal nn
49
Iliocostalis blood supply
Segmentally supplied by deep cervical, intercostal, subcostal and lumbar aa
50
Iliocostalis sections
Lumborum
Thoracis
Cervicis
51
Longgissimus sections
Thoracis
Cervicis
Capitis
52
Longissimus proximal attachment
Thoracic and cervical transverse processes
| Mastoid processes
53
Longissimus action
Bilaterally extend spine / head
| Unilaterally flexes spine / head to same side
54
Longissimus innervation
Segmentally innervated by posterior rami of spinal nn
55
Longissimus blood supply
Segmentally supplied by deep cervical, intercostal, subcostal and lumbar aa
56
Spinalis sections
Thoracis
| Cervicis
57
Spinalis proximal attachment
Broad tendon from iliac crest, sacrum, lumbar and lower thoracic spinous processes
58
Spinalis distal attachment
Thoracic and cervical spinous processes
59
Spinalis action
Bilaterally extend spine/head
| Unilaterally flexes spine/ head to same side
60
Spinalis innervation
Segmentally innervated by posterior rami of spinal nn
61
Spinalis blood supply
Segmentally supplied by deep cervical, intercostal, subcostal and lumbar aa
62
Semi spinalis sections
Thoracis
Cervicis
Capitis
63
Semi spinalis proximal attachment
C4-c6 articular processes
| T7-t12 transverse processes
64
Semi spinalis distal attachment
Occipital and spinous processes of superior vertebrae spanning 4-6 segments
65
Semi spinalis action
Bilaterally extends spine, unilaterally flexes spine to same side and rotates to opposite side
66
Semi spinalis innervation
Segmentally innervated by posterior rami of spinal nerves
67
Semisplinalis blood supply
Segmentally supplied by deep cervical, intercostal and subcostal and lumbar aa.
68
Semi spinalis spans how many segments
4-6
69
Multi Fido’s spans how many segments
2-4
70
Rotatores span how many segments
1-2
71
Multifidus proximal attachment
Sacrum, ilium, mammillary, transverse, and articular processes
72
Multifidus distal attachment
C2 spinous processes of superior vertebrae
| Spans 2-4 segments
73
Multifidus action
Bilaterally extends spine
| Unilaterally flexes spine to same side and rotates to opposite side
74
Multifidus innervation
Segmentally innervated by posterior rami of spinal nerves
75
Multifidus blood supply
Segmentally supplied by deep cervical, intercostal, subcostal and lumbar aa
76
Rotatores
T1-t12 transverse processes
77
Rotatores distal attachment
Between laminate and spinous processes of superior vertebrae
| Spans 1-2 segments
78
Rotatores action
Bilaterally extends spine,
| Unilaterally flexes spine to same side and rotates to opposite side
79
Rotatores innervation
Segmentally innervated by posterior rami of spinal nerves
80
Rotatores blood supply
Segmentally supplied by deep cervical, intercostal, subcostal and lumbar aa
81
Inter spinalis sections
Cervicis
Thoracis
Lumborum
82
Interspinales attachments
Traverse between adjacent spinous processes c1-l5
83
Interspinales action
Assists in extension of the spine
84
Interspinales innervation
Posterior rami of spinal nerves
85
Interspinales blood supply
Segmentally supplied by deep cervical, intercostal, subcostal and lumbar aa
86
Intertransversarii sections
Cervicis
Thoracis
Lumborum
87
Intertransversarii attachments
Traverse between adjacent transverse processes c2-l5
88
Intertransversarii action
Bilaterally stabilizes spine
| Unilaterally assists in lateral flexion
89
Intertransversarii innervation
Anterior and posterior rami of spinal nerves
90
Intertransversarii blood supply
Segmentally supplied by deep cervical, intercostal, subcostal, and lumbar aa
91
Lavatories costarum sections
Longus
| Brevis
92
Lavatories costarum attachment
C7 - t11 transverse processes to subadjacent rib or two ribs below nears angle
93
Lavatories costarum action
Bilaterally elevates ribs and slightly extends thoracic spine
Unilaterally flexes spine to same side and rotates it to the opposite side
94
Levatores costarum innervation
Posterior rami of spinal nerves
95
Levatores costarum blood supply
Segmentally supplied by deep cervical, intercostal, subcostal and lumbar aa
96
Rectus capitis posterior major proximal attachment
C2 spinous processes
97
Rectus capitis posterior major distal attachment
Lateral inferior nuchal line
98
Rectus capitis posterior major innervation
Suboccipital nerve (posterior ramus of c1)
99
Rectus capitis posterior major blood supply
Vertebral and occipital aa
100
Rectus capitis posterior minor distal attachment
Medial inferior nuchal line
101
Rectus capitis posterior minor innervation
Suboccipital nerve (posterior ramus of c1)
102
Rectus capitis posterior minor blood supply
Vertebral and occipital aa
103
Obliquus capitis superior proximal attachment
C1 transverse processes
104
Obliquus capitis distal attachment
Between superior and inferior nuchal line
105
Obliquus capitis superior action
Bilaterally extends head
| Unilaterally tilts head to same side and rotates it to the opposite side
106
Obliquus capitis superior supply
Vertebral and occipital aa
107
Obliquus capitis inferior proximal attachment
C2 spinous processes
108
Obliquus capitis inferior distal attachment
C1 transverse processes
109
Obliquus capitis inferior action
Bilaterally extends head
| Unilaterally rotates head to same side
110
Obliquus capitis inferior innervation
Suboccipital nerve (posterior ramus of c1)
111
Obliquus capitis inferior blood supply
Vertebral and occipital aa
112
Pectoralis major proximal attachment
Medial clavicle
Sternum
Costal cartilages 1-6
113
Pectoralis major distal attachment
Greater tuberosity of humerus
114
Pectoralis major action
Adduction
Medial rotation
Flexion
115
Pectoralis major innervation
Medial and lateral pectoral nerve
116
Pectoralis major blood supply
Thoracoacromial and lateral thoracic a
117
Pectoralis minor proximal attachment
Ribs 3-5
118
Pectoralis minor distal attachment
Coracoid process of scapula
119
Pectoralis minor action
Draws scapula downward,
rotates glenoid inferiority
Assists in respiration
120
Pectoralis minor innervation
Medial pectoral n
121
Pectoralis minor
Thoracoacromial and lateral thoracic a
122
Subclavian proximal attachment
1st rib
123
Subclavius distal attachment
Inferior clavicle
124
Subclavius action
Steadies sternoclavicular joint
125
Subclavius innervation
N to subclavius
126
Subclavius blood supply
Thoracoacromial a
127
External intercostal attachments
Courses inferno anteriorly from rib tubercle to costochondral joint
128
External intercostal action
Elevates ribs (inspiration)
129
External intercostal innervation
1-11th intercostal nn (anterior rami of thoracic spinal nn)
130
External intercostal blood supply
Intercostal aa
131
Internal intercostal attachments
Courses supers-anteriorly from costal angle to sternum
132
Internal intercostal action
Interosseous part: depresses ribs during expiration
| Interchondral part: elevates costal cartilages during inhalation
133
Internal intercostal innervation
1-11th intercostal nn (anterior rami of thoracic spinal nn)
134
Internal intercostal blood supply
Intercostal aa
135
Innermost intercostal attachments
Courses supero-anteriorly along the lateral surface of the thoracic wall
136
Innermost intercostal action
Depresses ribs during expiration
137
Innermost intercostal action
Depresses ribs during expiration
138
Innermost intercostal innervation
1-11th intercostal nn (anterior rami of thoracic spinal nn)
139
Innermost intercostal blood supply
Intercostal aa
140
Subcostal attachments
Course from lower margin of rib to inner surface of rubs 2 to 3 below
(Fibers blend with innermost intercostal m)
141
Subcostal action
Depresses ribs during expiration
142
Subcostal innervation
12th thoracic spinal n
143
Subcostal blood supply
Subcostal a
144
Trans versus thoracis attachments
Inner surface of sternum to inner surface of ribs 2-6
145
Trans versus thoracis action
Weakly depresses ribs for expiration
146
Transversus thoracis innervation
2-6th thoracic spinal nerves
147
Transversus thoracis blood supply
Intercostal aa
148
Anterior scalene proximal attachment
Transverse processes c3-c6
149
Anterior scalene distal attachment
1st rib - anterior scalene tubercle
150
Anterior scalene action
Raises ribs 1&2 - deep respiration
Bilaterally flexes neck,
Unilaterally bends neck to same side
151
Anterior scalene innervation
Anterior rami c3-c8
152
Anterior scalene blood supply
Ascending cervical artery (branch of subclavian artery)
153
Middle scalene proximal attachment
Transverse processes c3-c7
154
Middle scalene distal attachment
1st rib (posterior scalene tubercle)
155
Middle scalene action
Raises ribs 1 &2 - deep inspiration
Bilaterally flexes neck
Unilaterally bends neck to same side
156
Middle scalene innervation
Anterior rami c3-c8
157
Middle scalene blood supply
Ascending cervical artery (branch of subclavian a)
158
Posterior scalene proximal attachment
Transverse processes of c5-c7
159
Posterior scalene distal attachment
2nd rib
160
Posterior scalene action
Raises ribs 1 &2 - deep inspiration
Bilaterally flexes neck
Unilaterally bends neck to same side
161
Posterior scalene innervation
Anterior rami c3-c8
162
Posterior scalene blood supply
Ascending cervial artery (branch of subclavian a )
163
Deltoid proximal attachment
Lateral 1/3 clavicle,
acromion,
scapular spine
164
Deltoid distal attachment
Deltoid tuberosity of humerus
165
Deltoid action
```
Flexion
Medial rotation
Adduction
Abduction
Extension
Lateral rotation
```
166
Deltoid innervation
Axillary nerve
167
Deltoid blood supply
Posterior circumflex numeral a
168
Teres major proximal attachment
Inferior angle of scapula
169
Teres major distal attachment
Crest of lesser tubercle of humerus
170
Teres major action
Medial rotation
Adduction
Extension
171
Teres major innervation
Lower subscapular nerve
172
Teres major blood supply
Subscapular artery
173
Supraspinatus proximal attachment
Supraspinatus fossa of scapula
174
Supraspinatus distal attachment
Greater tubercle of humerus
175
Supraspinatus action
Abduction
176
Supraspinatus innervation
Suprascapular nerve
177
Supraspinatus blood supply
Suprascapular a
178
Infraspinatus proximal attachment
Infraspinatus fossa of scapula
179
Infraspinatus distal attachment
Greater tubercle of humerus
180
Infraspinatus action
Lateral rotation
181
Infraspinatus innervation
Suprascapular n
182
Infraspinatus blood supply
Suprascapular a
183
Teres minor proximal attachment
Lateral border of scapula
184
Teres minor distal attachment
Greater tubercle of humerus
185
Teres minor action
Lateral rotation
| Weak adduction
186
Teres minor innervation
Axillary nerve
187
Teres minor blood supply
Circumflex scapular a
188
Subscapularis proximal attachment
Subscapular fossa of scapula
189
Subscapularis distal attachment
Lesser tubercle of humerus
190
Subscapularis action
Medial rotation
191
Subscapularis innervation
Subscapular n
192
Subscapularis blood supply
Subscapular a
193
Triceps brachii proximal attachment
Infraglenoid tubercle
| Posterior humerus
194
Triceps brachii distal attachment
Olecranon on ulna
195
Triceps brachii action
Elbow extension
| Shoulder extension and adduction
196
Triceps brachii innervation
Radial n
197
Triceps brachii blood supply
Deep brachial a
198
Anconeus proximal atachment
Lateral epicondyle of humerus
199
Anconeous distal attachment
Olecranon of ulna
200
Anconeus action
Extends elbow and tightens joint
201
Anconeus innervation
Radial nerve
202
Anconeous blood supply
Deep brachial a
203
Biceps brachii proximal attachment
Supra glenoid tubercle of scapula (long head)
| Coracoid process of scapula (short head)
204
Biceps brachii distal attachment
Radial tuberosity
205
Biceps brachii action
Elbow flexion and supination
Shoulder flexion
Abduction and medial rotation
206
Biceps brachii innervation
Musculocutaneous nerve
207
Biceps brachii blood supply
Brachial a
208
Brachialis proximal attachment
Distal 1/2 anterior humerus
209
Brachialis distal attachment
Ulnar tuberosity
210
Brachialis action
Elbow flexion
211
Brachialis innervation
Musculocutaneous n
| Radial n
212
Brachialis blood supply
Brachial a
213
Coracobrachialis proximal attachment
Coracoid process of scapula
214
Coracobrachialis distal attachment
Crest of lesser tubercle of humerus
215
Coracobrachialis action
Flexion
Adduction
Medial rotation
216
Coracobrachialis innervation
Musculocutaneous n
217
Coracobrachialis blood supply
Brachial a
218
Pronation teres proximal attachment
Medial epicondyles
| Corona I’d process
219
Pronation teres distal attachment
Lateral radius
220
Pronation teres action
Weak elbow flexion
| Forearm pronation
221
Pronation teres innervation
Median nerve
222
Pronation teres blood supply
Anterior ulnar recurrent artery
223
Flexor carpi radialis proximal attachment
Medical epicondyle of humerus
224
Flexor carpi radialis distal attachment
Base mc 2
225
Flexor carpi radialis action
Wrist flexion and abduction
226
Flexor carpi radialis innervation
Median n
227
Flexor carpi radialis bloo dsupply
Radial artery
228
Palmaris longus proximal attachment
Medial epicondyle of humerus
229
Palmaris longus distal attachment
Palmar aponeurosis
230
Palmaris longus action
Weak elbow flexion
| Tightens palmar aponeurosis
231
Palmaris longus innervation
Median n
232
Palmaris longus blood supply
Posterior ulnar recurrent artery
233
Flexor carpi ulnaris proximal attachment
Medial epicondyle of humerus
| Olecranon
234
Flexor carpi ulnaris distal attachment
Pisiform
Hook of hamate
Base of mc 5
235
Flexor carpi ulnaris action
Wrist flexion and adduction
236
Flexor carpi ulnaris innervation
Ulnar n
237
Flexor carpi ulnaris blood supply
Posterior ulnar recurrent artery
238
Flexor digitorum superficialis proximal attachment
Medial epicondyle of humerus and proximal radius
239
Flexor digitorum superficialis distal attachment
Middle phalanges 2-5
240
Flexor digitorum action
Weak elbow flexion
Wrist flexion
Mcp ppip flexion digits 2-5
241
Flexor digitorum superficialis innervation
Median n
242
Flexor digitorum superficialis blood supply
Radial and ulnar aa
243
Flexor digitorum profundus proximal attachment
Proximal 2/3 ulna and interosseous membrane
244
Flexor digitorum profundus distal attachment
Distal phalanges of digits 2-5
245
Flexor digitorum profundus action
Wrist flexion
| Flexion of digits 2-5
246
Flexor digitorum profundus innervation
Median and ulnar nn
247
Flexor digitorum profundus blood supply
Ulnar a
248
Flexor polices longus proximal attachment
Radius and interosseous membrane
249
Flexor pollicis longus distal attachment
Distal phalanx digit 1
250
Flexor pollicis longus innervation
Median n
251
Flexor pollicis longus blood supply
Ulnar a
252
Pronation quadratics proximal attachment
Distal 1/4 ulnar
253
Pronation quadratics distal atachment
Distal 1/4 radius
254
Pronation quadratus action
Hand pronation
255
Pronation quadratus innervation
Median n
256
Pronator quadratus blood supply
Ulnar a
257
Adductor pollicis sections
Transverse and oblique
258
Adductor pollicis attachements
Mc3, capitate
| Base of proximal phalanx digit 1
259
Adductor pollicis action
Adduction of thumb
| Flexion of digit 1
260
Adductor pollicis innervation
Ulnar nerve
261
Adductor pollicis blood supply
Deep palmar arch
262
Abductor pollicis brevis attachments
Scaphoid, trapeze, flexor retinaculum
| Base of proximal phalanx digit 1
263
Abductor pollicis brevis action
Abduction thumb/ digit 1
264
Abductor pollicis brevis innervation
Recurrent branch of median nerve
265
Abductor pollicis brevis blood supply
Superficial palmar branch of radial artery
266
Flexor pollicis brevis attachments
Flexor retinaculum, capitate, trapezium
| Base of digit 1
267
Flexor pollicis brevis action
Flexion of digit 1
268
Flexor pollicis brevis innervation
Median and ulnar nerve
269
Flexor pollicis brevis blood supply
Superficial palmar branch of the radial artery
270
Opponens pollicis attachments
Trapezium
| Mc 1
271
Opponens pollicis action
Opposition of cmc digit 1
272
Opponens pollicis innervation
Recurrent branch of the median nerve
273
Opponens pollicis blood supply
Superficial palmar branch of radial artery
274
Opponens digiti minimi attachments
Hook of hamate, flexor retinaculum
| Mc5
275
Opponens digiti minimi action
Draws mc within palm during opposition
276
Opponens digiti minimi innervation
Ulnar nerve
277
Opponens digiti minimi blood supply
Deep palmar branch and deep carpal branch of ulnar nerve
278
Flexor digiti minimi brevis attachments
Hook of hamate, flexor retinaculum
| Base of proximal phalanx digit 5
279
Flexor digiti minimi brevis action
Flexion of digit 5
280
Flexor digiti minimi innervation
Ulnar nerve
281
Flexor digiti minimi brevis blood supply
Deep palmar branch
| Deep carpal branch of ulnar artery
282
Abductor digiti minimi attachments
Pisiform
| Proximal phalanx and digit 5
283
Abductor digiti minimi action
Flexion and abduction of mcp of digit 5
| Extension of pip and dip of digit 5
284
Abductor digiti minimi innervation
Ulnar nerve
285
Abduction digiti minimi blood supply
Deep palmar br and deep Cara pal br of ulnar a
286
Palmaris brevis attachments
Palmar aponeurosis
| Skin of hypothecate eminence
287
Palmaris brevis action
Tightens palmar aponeurosis
288
Palmaris brevis innervation
Ulnar nerve
289
Palmaris brevis blood supply
Superficial palmar arch
290
1st lumbrical attachments
Flexor digitorum profundus tendon
| 2nd dorsal digital expansion
291
1st lumbrical action
Flexion of mcp digits 2-5
| Extension of proximal and distal is digits 2-5
292
1st lumbrical innercation
Median nerve
293
1st lumbrical blood supply
Deep palmar arch
294
2nd lumbrical attachments
Flexor digitorum profundus tendon
| 3rd dorsal digital expansion
295
2nd lumbrical action
Flexion of mcp digits2-5
| Extension of proximal and distal is digits 2-5
296
2nd lumbrical innervation
Median nerve
297
2nd lumbrical blood supply
Deep palmar arch
298
3rd lumbrical attachments
Flexor digitorum profundus tendon
| 4th dorsal digital expansion
299
3rd lumbrical action
Flexion of mcp digits 2-5
| Extension of proximal and distal digits 2-5
300
3rd lumbrical innervation
Ulnar nerve
301
3rd lumbrical blood supply
Deep palmar arch
302
4th lumbrical attachment
Flexor digitorum profundus tendon
| 5th dorsal digital expansion
303
4th lumbrical action
Flexion of mcp digits 2-5
| Extension of proximal and distal is digits 2-5
304
4th lumbricals innervation
Ulnar nerve
305
4th lumbrical blood supply
Deep palmar arch
306
1st palmar interossei attachment
Mc2 ulnar side
| 2nd dorsal digital expansion and base of proximal phalanx 2
307
1st palmar interossei action
Flexion of mcp digits 2,4,5
| Extension and adduction of proximal and distal is digits toward digit 3
308
1st palmar interossei innervation
Ulnar nerve
309
1st palmar interossei blood supply
Deep palmar arch
310
2nd palmar interossei attachment
Mc 4 radial side
| 4th dorsal digital expansion and base of proximal phalanx 4
311
2nd palmar interossei action
Flexion of mcp digits 2,4,5
| Extension and adduction of proximal and distal is digits toward digit 3
312
2nd palmar interossei innervation
Ulnar nerve
313
2nd palmar interossei blood supply
Deep palmar arch
314
3rd palmar interossei attachment
Mc 5 radial side
| 5th dorsal digital expansion and base of proximal phalanx 5
315
3rd palmar interossei action
Flexion of mcp digits 2,4,5
| Extension and adduction of proximal and distal is digits toward digit 3
316
3rd palmar interossei innervation
Ulnar nerve
317
3rd palmar interossei blood supply
Deep palmar arch
318
1st dorsal interossei attachments
Mc 1 and 2
| 2nd dorsal digital expansion and radial side of proximal phalanx 2
319
1st dorsal interossei action
Flexion of mcp digits 2-4
| Extension and abduction of proximal and distal is digits away from digit 3
320
1st dorsal interossei innervation
Ulnar nerve
321
1st dorsal interossei blood supply
Deep palmar arch
322
2nd dorsal interossei attachments
Mc 2 and 3
| 3rd dorsal digital expansion and radial side of proximal phalanx 3
323
2nd dorsal interossei action
Flexion of mcp digits 2-4
| Extension and abduction of proximal and distal is digits away from digit 3
324
2nd dorsal interossei innervation
Ulnar nerve
325
2nd dorsal interossei blood supply
Deep palmar arch
326
3rd dorsal interossei attachments
Mc 3 and 4
| 3rd dorsal digital expansion and ulnar side of proximal phalanx 3
327
3rd dorsal interossei action
Flexion of mcp digits 2-4
| Extension and abduction of proximal and distal is digits away from digit 3
328
3rd dorsal interossei innervation
Ulnar nerve
329
3rd dorsal interossei blood supply
Deep palmar arch
330
4th dorsal interossei attachment
Mc 4 and 5
| 4th dorsal digital expansion and ulnar side of proximal phalanx 4
331
4th dorsal interossei action
Flexion of mcp digits 2-4
| Extension and abduction of proximal and distal is digits away from digit 3
332
4th dorsal interossei innervation
Ulnar nerve
333
4th dorsal interossei blood supply
Deep palmar arch
334
Brachioradialis proximal attachment
Distal humerus
335
Brachioradialis distal attachment
Styloid process (radius)
336
Brachioradialis action
Elbow flexion, forearm pronation
337
Brachioradialis innervation
Radial nerve
338
Brachioradialis blood supply
Radial recurrent artery
339
Extensor carpi radialis longus proximal attachment
Lateral supracondylar ridge of humerus
340
Extensor carpi radialis longus distal attachment
Base of mc 3
341
Extensor carpi radialis longus action
Weak elbow flexion
| Wrist extension and abduction
342
Extensor carpi radialis longus innervation
Radial nerve
343
Extensor carpi radialis longus blood supply
Radial recurrent and radial aa
344
Extensor carpi radialis brevis proximal attachment
Lateral epicondyle
345
Extensor carpi radialis brevis distal attachment
Base of mc 3
346
Extensor carpi radialis brevis action
Weak elbow flexion
| Wrist extension and abduction
347
Extensor carpi radialis brevis innervation
Radial nerve
348
Extensor carpi radialis brevis blood supply
Radial recurrent and radial aa
349
Extensor digitorum proximal attachment
Lateral epicondyle
350
Extensor digitorum distal attachment
Dorsal digital expansion of digits 2-5
351
Extensor digitorum action
Wrist extension
Mcp, pip, dip extension digits 2-5
Abduction of fingers
352
Extensor digitorum innervation
Radial nerve
353
Extensor digitorum blood supply
Posterior interosseous artery
354
Extensor digiti minimi proximal attachment
Lateral epicondyle
355
Extensor digiti minimi distal attachment
Dorsal digital expansion of digit 5
356
Extensor digiti minimi action
Wrist extension and abduction
| Mcp, pip, dip extension and abduction of digit 5
357
Extensor digiti minimi innervation
Radial nerve
358
Extensor digiti minimi blood supply
Posterior interosseous artery
359
Extensor carpi ularis proximal attachment
Lateral epicondyle
360
Extensor carpi ulnaris distal attachment
Base of mc 5
361
Extensor carpi ulnaris action
Wrist extension and adduction
362
Extensor carpi ulnaris action
Wrist extension and adduction
363
Extensor carpi ulnaris innervation
Radial nerve
364
Extensor carpi ulnaris blood supply
Posterior interosseous artery
365
Abductor pollicis longus proximal attachment
Posterior radius and ulna
366
Abductor pollicis longus distal attachment
Base of mc 1
367
Abductor pollicis longus action
Wrist and cmc digit 1 abduction
368
Abductor pollicis longus innervation
Radial nerve
369
Abductor pollicis longus blood supply
Posterior interosseous artery
370
Extensor pollicis longus proximal attachment
Posterior ulna
371
Extensor pollicis longus distal attachmet
Base of distal phalanx digit 1
372
Extensor pollicis longus action
Wrist extension and abduction
CMC adduction digit 1
Mcp ip extension digit 1
373
Extensor pollicis longus innervation
Radial nerve
374
Extensor pollicis longus blood supply
Posterior interosseous artery
375
Extensor pollicis brevis proximal attachment
Posterior radius
376
Extensor pollicis brevis distal attachment
Base of proximal phalanx digit 1
377
Extensor pollicis brevis action
Wrist abduction
| CMC and mcp extension digit 1
378
Extensor pollicis brevis innervation
Radial nerve
379
Extensor pollicis brevis blood supply
Posterior rinterosseous artery
380
Extensor Indicis proximal attachment
Posterior ulna
381
Extensor indicis distal attachment
Posterior digital expansion digit 2
382
Extensor indicis action
Wrist extension
| Mcp pip dip extension digit 2
383
Extensor indicis innervation
Radial nerve
384
Extensor indicis blood supply
Posterior interosseous artery
385
Supination proximal attachment
Olecranon, lateral epicondyle of humerus
386
Supination distal attachment
Proximal radius
387
Supination action
Supination
388
Supination innervation
Radial nerve
389
Supination blood supply
Radial and posterior interosseous arteries
