OINAs Flashcards
1
Q
Platysma insertion
A
Over the pectoralis major and deltoid muscles
2
Q
Platysma action
A
It tenses the skin of the
neck
3
Q
Origin of the zygomaticus major
A
The zygomatic arch
4
Q
Insertion of the zygomaticus major
A
Into the corner of the mouth.
5
Q
Action of the zygomaticus major
A
It pulls the angle of the mouth superiorly and posteriorly as in laughing.
6
Q
Origin of the zygomaticus minor
A
The zygomatic bone and continues with orbicularis oculi on the lateral face of the levator labii superioris
7
Q
Insertion of the zygomaticus minor
A
Into the outer part of the upper lip.
8
Q
Action of the zygomaticus minor
A
It draws the upper lip backward, upward and outward as in smiling
9
Q
Origin of extraocular rectus muscles
A
A common tendinous ring that surrounds the optic canal and superior orbital fissure
10
Q
Insertion of extraocular rectus muscles
A
The anterior portion of the sclera.
11
Q
Innervation of extraocular rectus muscles
A
(a) Superior
(b) Inferior
(c) Medial
(i) I –CN III
(d) Lateral
(i) I – CN VI
12
Q
Origin of superior oblique
A
The sphenoid bone passes through the trochlea (cartilaginous sling)
13
Q
Insertion of superior oblique
A
The posterior lateral aspect of the sclera
14
Q
Innervation of superior oblique
A
CN IV
15
Q
Origin of inferior oblique
A
The anteromedial aspect of the floor of the orbit
16
Q
Insertion of inferior oblique
A
The posterolateral aspect of the sclera
17
Q
Innervation of inferior oblique
A
CN III
18
Q
All facial muscles are innervated by the ____
A
All facial muscles are innervated by the Facial nerve
19
Q
Action of Orbicularis oris
A
Encircles the mouth, causes mouth closure, pursing or puckering of lips,
chewing and speaking.
20
Q
Action of the buccinator
A
Located in the cheek and is important for mastication. It maintains the skin against the teeth during chewing. It aids with whistling and sucking.
21
Q
Origin of platysma
A
The skin of the face and mandible and descends
into the superficial fascia of the neck
22
Q
Insertion of platysma
A
The pectoralis major and deltoid muscles
23
Q
Action of platysma
A
Tenses the skin of the neck.
24
Q
Origin of temporalis muscle
A
Floor of the temporal fossa
25
Insertion of temporalis muscle
Coronoid process of the
| mandible
26
Innervation of temporalis muscle
Mandibular nerve, V3
27
Action of temporalis muscle
Elevation and retraction of the mandible for mastication
28
Origin of masseter muscle
Zygomatic arch
29
Insertion of masseter muscle
Lateral surface of the ramus, coronoid process and angle of the mandible
30
Innervation of masseter muscle
Mandibular nerve, V3
31
Action of masseter muscle
Elevation of mandible for mastication
32
Origin of lateral pterygoid
Greater wing of the sphenoid and lateral pterygoid plate
33
Insertion of lateral pterygoid
Neck of the mandible and disc of the TMJ
34
Innervation of lateral pterygoid
Mandibular nerve, V3
35
Action of lateral pterygoid
Bilaterally protrudes mandible; Unilaterally moves mandible side to side
36
Origin of medial pterygoid
Lateral pterygoid plate, maxilla
37
Insertion of medial pterygoid
Medial surface of the angle of the mandible
38
Innervation of medial pterygoid
Mandibular nerve, V3
39
Action of medial pterygoid
Elevates and protrudes the mandible; unilaterally moves the mandible side to side
40
Origin of trapezius
External occipital protuberance, ligamentum nuchae, spinous processes
of C7 to T12
41
Insertion of trapezius
Posterior border of lateral third of the clavicle, acromion process, and spine of the scapula
42
Innervation of trapezius
Spinal root of the accessory n. CN XI
43
Action of trapezius
Elevation from the upper fibers, retraction from the middle fibers and depression from the lower fibers
44
Origin of latissimus dorsi
Spinous processes of the vertebrae T7-L5, thoracolumbar fascia, iliac crest, inferior 3 to 4 ribs and inferior angle of the scapula
45
Insertion of latissimus dorsi
Medial lip of intertubercular groove of the humerus (anterior to teres major)
46
Innervation of latissimus dorsi
Thoracodorsal n
47
Action of latissimus dorsi
Extends, adducts and medially rotates the humerus, elevates the body when climbing
48
Origin of levator scapulae
Posterior tubercles of transverse processes of C1 to C4 vertebrae
49
Insertion of levator scapulae
Superior part of the medial border of the scapula
50
Innervation of levator scapulae
Dorsal scapular nerve (C4-5)
51
Action of levator scapulae
Elevates scapula, rotates head to the same side
52
Origin of rhomboid major
Spinous process of T2 to T5 vertebrae
53
Insertion of rhomboid major
Medial border of the scapula from the level of the spine to the inferior angle
54
Innervation of rhomboid major
Dorsal scapular n. (C4-5)
55
Action of rhomboid major
Retracts and downwardly rotates the scapula
56
Origin of rhomboid minor
Spinous processes of C7 and T 1 and the ligamentum nuchae
57
Insertion of rhomboid minor
Medial border of the scapula from the level of the spine to the inferior angle
58
Innervation of rhomboid minor
Dorsal scapular n. (C4-5)
59
Action of rhomboid minor
Retracts and downwardly rotates the scapula
60
Origin of serratus posterior superior
Ligamentum nuchae, spinous process of C7 thru T3
61
Insertion of serratus posterior superior
2nd to 5th ribs
62
Innervation of serratus posterior superior
Ventral primary rami of first 3 to 4 thoracic nerves
63
Action of serratus posterior superior
Elevates the superior 4 ribs to increase the size of the thorax
64
Origin of serratus posterior inferior
Spinous processes of T11 thru L2
65
Insertion of serratus posterior inferior
The inferior three or four ribs
66
Innervation of serratus posterior inferior
Ventral primary rami of last 4 thoracic nerves
67
Action of serratus posterior inferior
Depress the inferior 3 to 4 ribs to prevent superior pull by the diaphragm
68
Origin of splenius capitis
Ligamentum nuchae and spinous processes of C7 to T3
69
Insertion of splenius capitis
Mastoid process, occipital bone
70
Innervation of splenius capitis
Dorsal primary rami
71
Action of splenius capitis
Rotate the head and neck to the same side; neck and head extension
72
Origin of splenius cervicis
Spinous processes of T3 to T6
73
Insertion of splenius cervicis
Transverse processes of C1 to C4
74
Innervation of splenius cervicis
Dorsal primary rami
75
Action of splenius cervicis
Rotate the head and neck to the same side; extend head and neck
76
Origin of the erector spinae muscles
Broad tendon that attaches to the iliac crest, sacrum, sacroiliac ligaments, and sacral and inferior lumbar spinous processes
77
Innervation of the erector spinae muscles
Dorsal primary rami
78
What are the three vertical columns from lateral to medial?
1. Iliocostalis – lateral column
2. Longissimus – intermediate column
3. Spinalis – medial column
79
What are the 3 parts of the Iliocostalis?
- Lumborum
- Thoracis
- Cervicis
80
Origin of the lumborum
Iliac crest
81
Insertion of the lumborum
Attaches into the angles of the inferior six ribs
82
Origin of the thoracis
The six lower ribs
83
Insertion of the thoracis
Attaches to the six upper ribs
84
Origin of the cervicis
Arises from the six upper ribs
85
Insertion of the cervicis
Attaches to the transverse processes of the lower cervical vertebrae 4 to 6
86
What are the 3 parts of the longissimus?
- Thoracis
- Cervicis
- Capitis
87
Origin of thoracis
Arises from the lower lumbar spinous processes and sacrum
88
Insertion of thoracis
Attaches to the lower nine ribs and associated transverse processes
89
Origin of cervicis
Arises from transverse processes of T1-4 or 6
90
Insertion of cervicis
Transverse processes of C2-6
91
Origin of spinalis
Spinous processes of T11-L2
92
Insertion of spinalis
Spinous process of the upper 4 to 8 thoracic vertebrae
93
Action of spinalis
Extensors of the vertebral column
94
Origin of semispinalis capitis
Arises from the transverse processes of T1 to T6
95
Insertion of semispinalis capitis
Occipital bone
96
Action of semispinalis capitis
Bilaterally extends the head, and unilaterally it rotates the head to the same side
97
Innervation of semispinalis capitis
Dorsal rami of the cervical spinal nerves
98
Origin of multifidus
The vertebral arches of C2 to S4
99
Insertion of multifidus
On the spinous processes,
| spanning 1 to 3 vertebrae
100
Action of multifidus
Unilaterally – flexes the trunk laterally, rotates vertebra to the opposite side. Bilaterally – extends the trunk
101
Innervation of multifidus
Dorsal rami of the spinal nerves
102
Origin of the rotatores
The transverse process of one vertebrae
103
Insertion of the rotatores
The base of the spinous process of the superior vertebrae
104
Action of the rotatores
Rotation of the superior vertebrae to opposite side
| Functionally, they probably serve a proprioceptive role rather than biomechanical role
105
Innervation of the rotatores
Dorsal rami of spinal nerves
106
Origin of rectus capitis posterior major
Spinous process of C2
107
Insertion of rectus capitis posterior major
Occipital bone, inferior to the inferior nuchal line
108
Innervation of rectus capitis posterior major
Suboccipital n.
109
Action of rectus capitis posterior major
Unilateral – rotates the head to the same side.
| Bilaterally – extension of the head
110
Origin of rectus capitis posterior minor
Posterior arch of C 1
111
Insertion of rectus capitis posterior minor
Occipital bone, inferior to the inferior nuchal line
112
Innervation of rectus capitis posterior minor
Suboccipital n
113
Action of rectus capitis posterior minor
Unilateral – rotates the head to the same side.
| Bilaterally – extension of the head
114
Origin of obliquus capitis inferior
Spinous process of C2
115
Insertion of obliquus capitis inferior
Transverse process of C 1
116
Innervation of obliquus capitis inferior
Suboccipital n.
117
Action of obliquus capitis inferior
Rotate the head to the same side
118
Origin of obliquus capitis superior
Transverse process of C 1
119
Insertion of obliquus capitis superior
Posterior aspect of the occipital bone
120
Innervation of obliquus capitis superior
Suboccipital n
121
Action of obliquus capitis superior
Extend the head bilaterally, lateral flex the head unilaterally
122
Origin of the superior oblique of the longus colli
Anterior tubercles of the transverse processes of C3 to C5
123
Insertion of the superior oblique of the longus colli
Anterolateral surface of anterior tubercle of C1
124
Innervation of the superior oblique of the longus colli
Anterior rami of C2 to C4
125
Action of the superior oblique of the longus colli
Intersegmental stabilization; assists flexion
126
Origin of the vertical intermediate of the longus colli
Anterior aspect of the bodies of C5 to T3
127
Insertion of the vertical intermediate of the longus colli
Anterior aspect of the bodies of C2 to C4
128
Innervation of the vertical intermediate of the longus colli
Anterior rami of C2 to C6
129
Action of the vertical intermediate of the longus colli
Intersegmental stabilization; assists flexion
130
Origin of the inferior obliqueof the longus colli
Anterior tubercles of the transverse processes of C5 and C6
131
Insertion of the inferior obliqueof the longus colli
Anterior aspects of bodies of T1 to T3
132
Innervation of the inferior obliqueof the longus colli
Anterior rami of C5 and C6
133
Action of the inferior obliqueof the longus colli
Intersegmental stabilization; assists flexion
134
Origin of rectus capitis anterior
Anterior surface of the lateral mass and root of the transverse process of C1
135
Insertion of rectus capitis anterior
Inferior surface of the basilar part of the occipital bone
136
Innervation of rectus capitis anterior
Anterior rami of C1 and C2
137
Action of rectus capitis anterior
Intersegmental stabilization; assists flexion
138
Origin of rectus capitis lateralis
Superior surface of transverse process of C1
139
Insertion of rectus capitis lateralis
Inferior surface of the jugular process of the occipital bone
140
Innervation of rectus capitis lateralis
Anterior rami of C1and C2
141
Action of rectus capitis lateralis
Intersegmental stabilization; assists flexion
142
Origin of scalenus posterior
Posterior tubercles of transverse processes of C4 to C6
143
Insertion of scalenus posterior
Outer surface of 2nd rib behind the tubercle and attachment of serratus anterior
144
Innervation of scalenus posterior
Anterior rami of C5 to C7
145
Action of scalenus posterior
Lateral flexion of neck to same side
146
Origin of scalenus medius
Transverse processes of C1 and C2 and anterior aspect of posterior tubercles of C3 to C7
147
Insertion of scalenus medius
Upper surface of 1st rib between the tubercle and groove for the subclavian artery
148
Innervation of scalenus medius
Anterior rami of C3 to C8
149
Action of scalenus medius
Lateral flexion of neck to same side
150
Origin of scalenus anterior
Musculotendinous fascicles from the anterior tubercles of the transverse processes of
C3 to C6
151
Insertion of scalenus anterior
To scalene tubercle on the inner border of the 1st rib and a ridge on the uppersurface of
the rib, anterior to the groove for the subclavian artery
152
Innervation of scalenus anterior
Anterior rami of C4 to C6
153
Action of scalenus anterior
Lateral flexion of neck to same side; flexion of neck acting bilaterally
154
Origin of longus capitis
Anterior tubercles of transverse processes of C3 to C6
155
Insertion of longus capitis
Inferior surface of the basilar part of the occipital bone
156
Innervation of longus capitis
Anterior rami of C1 to C3
157
Action of longus capitis
Flexion; assists intersegmental stabilization
158
Origin of sternocleidomastoid
From two heads, manubrium and medial 1/3rd of clavicle
159
Insertion of sternocleidomastoid
Mastoid process
160
Innervation of sternocleidomastoid
Spinal accessory nerve (CN XI)
161
Action of sternocleidomastoid
Unilaterally turns chin to opposite side bilaterally flexes neck
162
Origin of anterior belly of digastric
Inferior surface of the mandible
163
Origin of posterior belly of digastric
Mastoid process
164
Insertion of digastric
Hyoid bone
165
Innervation of digastric
Mandibular and facial
166
Action of digastric
Raise the hyoid, lower the mandible
167
Origin of the mylohyoid
Mandible
168
Insertion of the mylohyoid
Hyoid bone
169
Innervation of the mylohyoid
Nerve to the Mylohyoid
170
Action of the mylohyoid
Raise the hyoid and floor of mouth
171
Origin of the omohyoid
Superior border of the scapula
172
Insertion of the omohyoid
Hyoid bone
173
Innervation of the omohyoid
C1, C2, C3 via the ansa cervicalis
174
Action of the omohyoid
Depresses hyoid bone
175
Origin of sternohyoid
Manubrium and clavicle
176
Insertion of sternohyoid
Hyoid bone
177
Innervation of sternohyoid
C1, C2, C3, via the ansa cervicalis
178
Action of sternohyoid
Depresses hyoid bone
179
Origin of sternothyroid
Manubrium
180
Insertion of sternothyroid
Thyroid cartilage
181
Innervation of sternothyroid
C1, C2, C3, via the ansa cervicalis
182
Action of sternothyroid
Pull larynx inferiorly
183
Origin of thyrohyoid
Thyroid cartilage
184
Insertion of thyrohyoid
Hyoid bone
185
Innervation of thyrohyoid
C1
186
Action of thyrohyoid
Elevate larynx in swallowing
187
Origin of stylohyoid
Styloid process
188
Insertion of stylohyoid
Hyoid bone
189
Innervation of stylohyoid
Facial
190
Action of stylohyoid
Pull hyoid posteriorly and superiorly
191
Origin of anterior scalene
Transverse processes of C3-C6
192
Insertion of anterior scalene
First rib
193
Innervation of anterior scalene
Cervical ventral rami
194
Action of anterior scalene
Elevate the first rib, unilaterally laterally flex neck, bilaterally assist with forward neck
flexion
195
Origin of middle scalene
Transverse processes of C2-C7
196
Insertion of middle scalene
First rib
197
Innervation of middle scalene
Cervical ventral rami
198
Action of middle scalene
Unilaterally laterally flexes neck, elevates first rib
199
Origin of posterior scalene
Transverse process of C4-C6
200
Insertion of posterior scalene
Second rib
201
Innervation of posterior scalene
Cervical ventral rami
202
Action of posterior scalene
Unilaterally laterally flexes neck, elevates second rib
203
Origin of the deltoid
Lateral third of the clavicle, acromion and spine of the scapula
204
Insertion of the deltoid
Deltoid tuberosity of the humerus
205
Innervation of the deltoid
Axillary n.
206
Action of the deltoid
- Anterior part flexes and medially rotates humerus
- Middle part abducts the humerus
- Posterior part extends and lateral rotates the humerus
207
Origin of teres major
Dorsal surface of the inferior angle of the scapula
208
Insertion of teres major
Medial lip of the intertubercular groove of the humerus
209
Innervation of teres major
Lower subscapular n.
210
Action of teres major
Adducts and medially rotates, extends arm
211
Origin of supraspinatus
Supraspinatus fossa of the scapula
212
Insertion of supraspinatus
Greater tubercle of the humerus, superior facet
213
Innervation of supraspinatus
suprascapular n
214
Action of supraspinatus
Abducts the arm and assist with humerus position within the glenoid fossa
215
Origin of infraspinatus
Infraspinatus fossa of the scapula
216
Insertion of infraspinatus
Greater tubercle of the humerus, middle facet
217
Innervation of infraspinatus
Suprascapular n.
218
Action of infraspinatus
Lateral rotator
219
Origin of teres minor
Superior part of the lateral boarder of the scapula
220
Insertion of teres minor
Greater tubercle of the humerus, inferior facet
221
Innervation of teres minor
Axillary n.
222
Action of teres minor
Lateral rotator
223
Origin of the subscapularis
Subscapular fossa
224
Insertion of the subscapularis
Lesser tubercle of the humerus
225
Innervation of the subscapularis
Upper and lower subscapular n.
226
Action of the subscapularis
Medially rotates and adducts
227
Origin of pectoralis major
Clavicular Head - Anterior half of the medial aspect of the clavicle Sternocostal
Head - Sternum, Superior six costal cartilages, aponeurosis of the external oblique
muscle
228
Insertion of pectoralis major
Lateral lip of the intertubercular groove of the Humerus
229
Innervation of pectoralis major
Lateral and medial pectoral n.
230
Action of pectoralis major
Adducts and medially rotates humerus
231
Origin of pectoralis minor
Ribs 3 to 5 near the costal cartilages
232
Insertion of pectoralis minor
Coracoid process of the scapula
233
Innervation of pectoralis minor
Medial pectoral n.
234
Action of pectoralis minor
Stabilizes scapula against thoracic wall
235
Origin of subclavius
Rib, 1 and costal cartilage
236
Insertion of subclavius
Inferior surface of the middle third of the clavicle
237
Innervation of subclavius
Nerve to the subclavius
238
Action of subclavius
Anchors and depresses clavicle
239
Origin of serratus anterior
Upper eight ribs
240
Insertion of serratus anterior
Anterior surface medial boarder of the scapula
241
Innervation of serratus anterior
Long thoracic n.
242
Action of serratus anterior
Protracts and upwardly rotates the scapula
243
Origin of biceps brachii long head
Supraglenoid tubercle of the scapula
244
Insertion of biceps brachii
tuberosity of the radius and bicipital aponeurosis
245
Origin of biceps brachii short head
Coracoid process of the scapula
246
Innervation of biceps brachii
Musculocutaneous nerve
247
Action of biceps brachii
Flexes and supinates forearm
248
Origin of coracobrachialis
Coracoid process of the scapula
249
Insertion of coracobrachialis
Middle third of the medial side of the humerus
250
Innervation of coracobrachialis
Musculocutaneous nerve
251
Action of coracobrachialis
Flexion and adduction of the arm
252
Origin of brachialis
Distal half of anterior surface of the humerus
253
Insertion of brachialis
Coronoid process and tuberosity of the ulna
254
Innervation of brachialis
Musculocutaneous nerve
255
Action of brachialis
Flexes forearm
256
Origin of triceps long head
Infraglenoid tubercle of the scapula
257
Origin of triceps medial head
Posterior surface of the humerus, inferior to the
| spiral groove
258
Origin of triceps lateral head
Posterior surface of the humerus, superior to the spiral groove
259
Insertion of triceps
Olecranon process of the ulna
260
Innervation of triceps
Radial nerve
261
Action of triceps
Extends the forearm
262
Origin of anconeus
Lateral epicondyle of the humerus
263
Insertion of anconeus
Lateral surface of the Olecranon process and posterior surface of the ulna
264
Innervation of anconeus
Radial n
265
Action of anconeus
Extension of the forearm
266
Origin of supinator
Lateral epicondyle of the humerus
267
Insertion of supinator
Lateral, posterior and anterior surfaces of the proximal third of the radius
268
Innervation of supinator
Deep branch of the radial nerve
269
Action of supinator
Supinates the forearm
270
Origin of brachioradialis
Proximal two-thirds of the lateral supracondylar ridge of humerus
271
Insertion of brachioradialis
Lateral surface of the distal end of the radius
272
Innervation of brachioradialis
Radial nerve
273
Action of brachioradialis
Flexes forearm
274
Origin of pronator teres
Medial epicondyle of the humerus and coronoid process of the ulna
275
Insertion of pronator teres
Middle of lateral surface of the radius
276
Innervation of pronator teres
Median n
277
Action of pronator teres
Pronates and flexes forearm
278
Origin of flexor carpi radialis
Medial epicondyle of humerus
279
Insertion of flexor carpi radialis
Base of the second metacarpal bone
280
Innervation of flexor carpi radialis
Median nerve
281
Action of flexor carpi radialis
Flexes and radial deviates hand
282
Origin of palmaris longus
Medial epicondyle of humerus
283
Insertion of palmaris longus
Flexor retinaculum and palmar aponeurosis
284
Innervation of palmaris longus
Median nerve
285
Action of palmaris longus
Flexes hand
286
Origin of flexor digitorum superficialis
Medial epicondyle of the humerus, coronoid process of the ulna and the anterior border of the radius
287
Insertion of flexor digitorum superficialis
Bodies of the middle phalanges of the medial four digits
288
Innervation of flexor digitorum superficialis
Median nerve
289
Action of flexor digitorum superficialis
Flexes the middle phalanges of the medial four digits, the proximal phalanges and hand
290
Origin of flexor carpi ulnaris
Medial epicondyle of humerus, olecranon and ulna
291
Insertion of flexor carpi ulnaris
Pisiform, hook of the hamate and 5th metacarpal
292
Innervation of flexor carpi ulnaris
Ulnar nerve
293
Action of flexor carpi ulnaris
Flexes hand, ulnar deviates hand
294
Origin of flexor digitorum profundus
Proximal three-fourths of medial and anterior surface of the ulna and interosseous membrane
295
Insertion of flexor digitorum profundus
Base of the distal phalanges of the medial four digits
296
Innervation of flexor digitorum profundus
Medial part is ulnar Lateral part is median
297
Action of flexor digitorum profundus
Flexes the distal phalanges of the medial four digits
298
Origin of flexor pollicis longus
Anterior surface of the radius and interosseous membrane
299
Insertion of flexor pollicis longus
Base of the distal phalanx of the thumb
300
Innervation of flexor pollicis longus
Anterior interosseous nerve
301
Action of flexor pollicis longus
Flexes phalanges of thumb
302
Origin of pronator quadratus
Distal, anterior surface of ulna
303
Insertion of pronator quadratus
Distal, anterior surface of the radius
304
Innervation of pronator quadratus
Anterior interosseous nerve
305
Action of pronator quadratus
Pronates the forearm
306
Origin of extensor carpi ulnaris
Lateral epicondyle
307
Insertion of extensor carpi ulnaris
Base of the 5th metacarpal
308
Innervation of extensor carpi ulnaris
Posterior Interosseous nerve
309
Action of extensor carpi ulnaris
Extends and ulnar deviates the wrist
310
Origin of extensor carpi radialis brevis
Lateral epicondyle
311
Insertion of extensor carpi radialis brevis
Base of the 3rd metacarpal
312
Innervation of extensor carpi radialis brevis
Deep radial nerve
313
Action of extensor carpi radialis brevis
Extends and radial deviates hand
314
Origin of extensor carpi radialis longus
Lateral supracondylar ridge
315
Insertion of extensor carpi radialis longus
Base of the 2nd metacarpal
316
Innervation of extensor carpi radialis longus
Radial nerve
317
Action of extensor carpi radialis longus
Extends and radial deviates hand
318
Origin of extensor digitorum
Lateral epicondyle of the humerus
319
Insertion of extensor digitorum
Extensor expansions
320
Innervation of extensor digitorum
Posterior Interosseous nerve
321
Action of extensor digitorum
Extend fingers digits 2 through 5
322
Origin of Extensor digiti minimi
Ulnar side extensor digitorum
323
Insertion of Extensor digiti minimi
Extensor expansion of digit 5
324
Innervation of Extensor digiti minimi
Posterior Interosseous nerve
325
Action of Extensor digiti minimi
Extends the 5th digit
326
Origin of Abductor pollicis longus
Posterior surface of the middle ulna, radius and interosseous membrane
327
Insertion of Abductor pollicis longus
Base of the 1st metacarpal
328
Innervation of Abductor pollicis longus
Posterior Interosseous nerve
329
Action of Abductor pollicis longus
Abducts thumb
330
Origin of Extensor pollicis brevis
Middle one third posterior surface or radius and interosseous membrane
331
Insertion of Extensor pollicis brevis
Base of the proximal phalanx of the thumb
332
Innervation of Extensor pollicis brevis
Posterior Interosseous nerve
333
Action of Extensor pollicis brevis
Extends thumb
334
Origin of Extensor pollicis longus
Middle one third of the posterior surface of the ulna and interosseous membrane
335
Insertion of Extensor pollicis longus
Base of the distal phalanx of the thumb
336
Innervation of Extensor pollicis longus
Posterior interosseous nerve
337
Action of Extensor pollicis longus
Extends the thumb
338
Origin of extensor indicis
Posterior surface of the ulna and interosseous membrane
339
Insertion of extensor indicis
Extensor digitorum tendon to index finger
340
Innervation of extensor indicis
Posterior interosseous nerve
341
Action of extensor indicis
Extends the index finger
342
Origin of Abductor pollicis brevis
Scaphoid and trapezium
343
Insertion of Abductor pollicis brevis
Lateral side of base of proximal phalanx
344
Innervation of Abductor pollicis brevis
Recurrent branch of the Median nerve
345
Action of Abductor pollicis brevis
Abducts thumb at carpometacarpal joint
346
Origin of Flexor pollicis brevis
Flexor retinaculum and trapezium
347
Insertion of Flexor pollicis brevis
Lateral side of base of proximal phalanx
348
Innervation of Flexor pollicis brevis
Recurrent branch of the Median nerve
349
Action of Flexor pollicis brevis
Flex thumb
350
Origin of opponens pollicis
Flexor retinaculum and trapezium
351
Insertion of opponens pollicis
Lateral side of the first metacarpal
352
Innervation of opponens pollicis
Recurrent branch of the Median nerve
353
Action of opponens pollicis
Oppose thumb
354
Origin of Abductor digiti minimi
Pisiform
355
Insertion of Abductor digiti minimi
Base of the proximal phalanx of the 5th digit
356
Innervation of Abductor digiti minimi
Ulnar nerve
357
Action of Abductor digiti minimi
Abduction
358
Origin of Flexor digiti minimi brevis
Hamate
359
Insertion of Flexor digiti minimi brevis
Base of the proximal phalanx of the 5th digit
360
Innervation of Flexor digiti minimi brevis
Ulnar nerve
361
Action of Flexor digiti minimi brevis
Flexes 5th digit
362
Origin of Adductor pollicis oblique head
Carpal bones and bases of metacarpals 2 and 3
363
Origin of Adductor pollicis transverse head
Shaft of the 3rd metacarpal
364
Insertion of Adductor pollicis
Base of the proximal phalanx of the thumb
365
Innervation of Adductor pollicis
Ulnar nerve
366
Action of Adductor pollicis
Adduct thumb
367
Origin of the lumbricals
Tendons of the flexor digitorum profundus
368
Insertion of the lumbricals
Lateral side of the extensor expansions
369
Innervation of the lumbricals
Lumbricals 1 and 2 - median nerve
| Lumbricals 3 and 4 - ulnar nerve
370
Action of the lumbricals
Flex the MP joints and extend the proximal IP joints
371
Origin of Palmar interossei
Sides of metacarpal bones
372
Insertion of Palmar interossei
Base of the proximal phalanges and extensor expansion
373
Innervation of Palmar interossei
Ulnar nerve
374
Action of Palmar interossei
Adduct fingers
375
Origin of Dorsal interossei
Arise via two heads from adjacent sides of the metacarpals between which they lie.
376
Insertion of Dorsal interossei
Proximal phalanges and extensor expansion
377
Innervation of Dorsal interossei
Ulnar nerve
378
Action of Dorsal interosse
Abduct fingers at MP joints
