muscles Flashcards
(329 cards)
1
Q
Plantaris insertion
A
Calcaneus via the calcaneal tendon
2
Q
Plantaris actions
A
Weak flexion of the knee weak planter flexion of the ankle
3
Q
Plantaris origin
A
Lateral supracondylar line of femur
4
Q
Plantaris nerve
A
Tibial nerve
5
Q
Popliteus origin
A
Lateral condyle of the femur
6
Q
Popliteus insertion
A
Proximal posterior aspect of tibia
7
Q
Popliteus action
A
Medially rotate flexed knee and flex knee at tibiofemoral
8
Q
Popliteus nerve
A
Tibial nerve
9
Q
Tibialis posterior origin
A
Proximal posterior shaft of tibia and fibula and interosseous membrane
10
Q
Tibialis posterior insertion
A
All 5 tarsal bones and bases of 2nd through 4th metatarsals
11
Q
Tibialis posterior actions
A
Planter flex and invert
12
Q
Tibialis posterior nerve
A
Tibial nerve
13
Q
Flexor digitorum longus origin
A
Middle posterior surface of tibia
14
Q
Flexor digitorum longus insertion
A
Distal phalanges of 2nd through 5th toes
15
Q
Flexor digitorum longus actions
A
Flex 2nd-5th toes weak planter flexion of the ankle and invert the foot
16
Q
Flexor digitorum longus nerve
A
Tibial nerve
17
Q
Flexor hallucis longus origin
A
Middle half of posterior fibula
18
Q
Flexor Hallicus longus insertion
A
Distal phalanx of first toe
19
Q
Flexor hallicus longus actions
A
Flex first toe weak planter flexion of ankle and invert the foot
20
Q
Flexor hallicus longus nerve
A
Tibial nerve
21
Q
Plantaris origin
A
Lateral supracondylar line of femur
22
Q
Plantaris insertion
A
Calcaneous via the calcaneal tendon
23
Q
Plantaris actions
A
Weak flexion of the knee weak planter flexion of the ankle
24
Q
Plantaris nerve
A
Tibial nerve
25
Fibularis brevis origin
Distal 2/3 of the lateral fibula
26
Fibularis brevis insertion
Tuberosity of fifth metatarsal
27
Fibularis longus action
Evert the foot and assist to planter flex the ankle
28
Fibularis longus nerve
Superficial fibular nerve
29
Sartorius nerve
Femoral nerve
30
Sartorius origin
Anterior superior iliac spine
31
Sartorius insertion
Proximal medial shaft of the tibia at pes anserinus tendon
32
Sartorius actions
Flex lat rotate abduct coxal
Flex and med rotate tibia femoral
33
Gracilis nerve
Anterior branch of obturator nerve
34
Gracilis origin
Inferior Ramis of pubis
35
Gracilis insertion
Proximal medial shaft of tibia at pes anserinus tendon
36
Gracilis action
Adduct med rotate coxal
Flex med rotate tibiofemoral
37
Adductor brevis nerve
Obturator nerve
38
Adductor brevis origin
Inferior ramus of pubis
39
Adductor brevis insertion
Pectineal line and medial Lip of Linea aspera
40
Adductor brevis action
Adduct med rotate assist to flex coxal
41
Pectineus nerve
Femoral and obturator
42
Pectineus origin
Superior ramis of pubis
43
Pectineus insertion
Pectineal line of femur
44
Pectineus action
Adduct med rotate assist to flex coxal
45
Adductor magnus nerve
Obturator and sciatic
46
Adductor magnus origin
Inferior ramus of the pubis Ramus of ischium and ishial tuberocity
47
Adductor magnus insertion
Medial lip of Linea aspera and adductor tubercle
48
Adductor magnus actions
Adductor med rotate assist to flex coxal posterior fibers extend coxal
49
Rectus femoris nerve
Femoral
50
Rectus femoris origin
Anterior inferior iliac spine
51
Rectus femoris insertion
Tibial tuberocity via patella and patellar ligament
52
Rectus femoris actions
Extend tibiofemoral flex coxal
53
Vastus group nerve
Femoral
54
Vastus group origin
Vm: medial lip of Linea aspera
VL: lateral lip of Linea aspera gluteal tuberocity greater trochanter
Vi: anterior and lateral shaft of femur
55
Vastus group insertion
Tibial tuberocity via patella and patellar ligament
56
Vastus group action
Extend tibiofemoral
57
Biceps femoris nerve
Sciatic nerve long head tibial branch short head fibular branch
58
Biceps femoris origin
Long head ischeal tuberocity
Short head lateral lip of Linea aspera
59
Biceps femoris insertion
Head of fibula
60
Biceps femoris action
Flex lat rotate tibiofemoral long head extend and lat rotate coxal
Bilaterally tilt pelvis posteriorly
61
Semitendinosis nerve
Sciatic
62
Semitendinosis origin
Ischeal tuberocity
63
Semitendinosis insertion
Proximal medial shaft of the tibia at pes anserinus tendon
64
Semitendinosis action
Flex med rotate tibiofemoral extend med rotate coxal
Bilaterally tilt pelvis posteriorly
65
Semimembranosis nerve
Sciatic
66
Semimembranosis origin
Ischeal tuberocity
67
Semimembranosis insertion
Posterior aspect of medial condyle of tibia
68
Semimembranosis actions
Flex med rotate tibiofemoral
Extend med rotate coxal
Bilaterally tilt pelvis posteriorly
69
Tensor facia latae nerve
Superior gluteal
70
Tensor facia latae origin
Iliac crest posterior to asis
71
Tensor facia latae insertion
Iliotibial tract
72
Tensor facia latae action
Flex med rotate abduct coxal
73
Adductor longus nerve
Obturator
74
Adductor longus origin
Public tubercle
75
Adductor longus insertion
Pectineal line and medial lip of Linea aspera
76
Adductor longus actions
Adduct med rotate and flex coxal
77
Sternocleidomastoid origin
Top of the manubrium and medial ⅓ of clavicle
78
Sternocleidomastoid insertion
Mastoid process of the temporal bone and lateral portion of superior nuchal line of occiput
79
Sternocleidomastoid action
Flex neck laterally flex head and neck to same side rotate head and neck to opposite side assist to elevate rib cage during inhale
80
Sternocleidomastoid nerve
Spinal accessory nerve
81
Scalenes
Anterior: 361
Middle: 271
Posterior: 672
Nerve: c3-c8
82
Scalene action
Anterior: flex neck
Lat flex head and neck rotate opposite side elevate ribs on inhale
83
Splenius capitis origin
Inferior ½ of the ligamemtum nuchae and spinous processes of c7-t4
84
Splenius capitis insertion
Mastoid process and lateral portion of the superior nuchal line
85
Splenius capitis actions
Extends head and neck laterally flexes and rotates head and neck to same side
86
Splenius capitis nerve
Cervical nerve
87
Levator scapulae origin
Traverse processes of of c1-c4
88
Levator scapulae insertion
Medial border of scapula between the superior angle and superior portion of spine if scapula
89
Levator scapulae actions
Elevate and downward rotate the scapula at the scapulothoracic joint extend and lat flex and rotate head to same side
90
Levator scapulae nerve
Cervical, dorsal scapular nerve
91
Pectoralis major origin
Medial half of clavicle sternum and cartilage of ribs 1-6
92
Pectoralis major insertion
Crest if greater tubercle of humerus
93
Pectoralis major actions
Adducts medial rotates shoulder at g/h joint assist to elevate thorax during force inhale
Upper fibers flex and horizontally adduct shoulder at g/h jt lower extends
94
Pectoralis major nerve
Med and lat pectoral nerve
95
Splenius cervicis origin
Spinous processes of t3-t6
96
Splenius cervicis insertion
Transverse processes of c1-c3
97
Splenius cervicis actions
Bilaterally extend neck unilaterally lat flex and rotate the neck to same side
98
Splenius cervicis nerve
Cervical nerve
99
Pec minor origin
Ribs 3-5
100
Pec minor insertion
Medial surface of coracoid process of the scapula
101
Pec minor action
Abduct depress and downward rotate scapulothoracic elevate thorax of forced inhale
102
Pec minor nerve
Medial pectoral with fibers from communicating branch of lateral pectoral
103
Longus colli origin
Bodies of c5 through t3 transverse processes of c3-c5
104
Longus colli insertion
Tubercle on anterior arch of the atlas bodies of axis c3 and c4 transverse processes of c5-c6
105
Longus colli action
Bilaterally flex neck unilaterally lat flex and rotate neck to same side
106
Longus colli nerve
C2-c6 (7)
107
Rectus capitis posterior major
Spinous processes of the axis c2 to the inferior nuchal line of the occiput
108
Rectus capitis posterior minor
Tubercle of the posterior arch of the atlas c1 to inferior nuchal line of occiput
109
Oblique capitis superior
Transverse processes of axis c1 to between nuchal line of occiput
109
Oblique capitis inferior
Spinous processes of the axis c2 to the transverse processes of atlas c1
110
Rectus capitis posterior major actions
Rock and tilt head back into extension rotate to same side
111
Rectus capitis minor action
Rock and tilt head back into extension
112
Oblique capitis superior action
Rock and tilt head back into extension lat flex head to same side
113
Oblique capitis inferior actions
Rotate head same side
114
Suboccipital group nerve
Suboccipital nerve
115
Serratus anterior origin
External surface of upper 8 or 9 ribs
116
Serratus anterior insertion
Anterior surface of medial border of scapula
117
Serratus anterior actions
Abducts Upwardly rotates depresses at scapulothoracic holds medial border of scapula against rib cage
118
Serratus anterior nerve
Long thoracic nerve
119
Subclavius origin
1st rib and cartilage
120
Subclavius insertion
Inferior surface of middle ⅓ of clavicle
121
Subclavius actions
Depress the clavicle and draws anteriorly elevates first rib stabilize sternoclavicular joint
122
Subclavius nerve
Subclavian nerve
123
Coracobrachialis origin
Coracoid process of scapula
124
Coracobrachialis insertion
Medial surface of mid humerus shaft
125
Coracobrachialis action
Flex and adduct shoulder and g/h joint
126
Coracobrachialis nerve
Musculocutaneous nerve
127
Teres major origin
Inferior angle and lower ⅓ of lateral border of scapula
128
Teres major insertion
Crest of lesser tubercle of humorous
129
Teres major nerve
Lower subscapular nerve
130
Teres major actions
Medial rotates adducts extends gh joint
131
Infraspinatus origin
Infraspinous fossa of scapula
132
Infraspinatus insertion
Greater tubercle of humorous
133
Infraspinatus actions
Laterally rotates adducts and stabilizes gh joint
134
Teres minor insertion
Greater tubercle of humorous
134
Infraspinatus nerve
Suprascapular
135
Teres minor origin
Upper ⅔ of lateral border of scapula
136
Teres minor actions
Laterally rotates adducts stabilizes gh joint in glenoid cavity
137
Teres minor nerve
Axillary nerve
138
Subscapularis origin
Subscapular fossa of scapula
139
Subscapularis insertion
Lesser tubercle of humorous
140
Subscapularis actions
Medial rotate and stabilize gh and glenoid cavity
141
Supraspinatus origin
Supraspinous fossa of scapula
142
Supraspinatus insertion
Greater tubercle of humorous
143
Supraspinatus actions
Abducts and stabilizes gh at glenoid cavity
144
Brachialis origin
The distal ½ of the anterior surface of humorous
145
Brachialis insertion
Tuberosity and coronoid process of the ulna
146
Brachialis actions
Flex elbow at humeroulnar joint
147
Pronator teres origin
Common flexor tendon from medial epicondyle of humorous and coronoid process of the ulna
148
Pronator teres insertion
Middle of lateral surface of radius
149
Brachialis nerve
Musculocutaneous nerve small branch from radial nerve
149
Flexor carpi ulnaris actions
Flex and adduct the wrist at radiocarpal joint assist with flexion of elbow at humeroulnar
149
Pronator teres actions
Pronates the forearm at the radio ulnar joints assists to flex elbow at humeroulnar
150
Pronator teres nerve
Median
151
Flexor carpi ulnaris insertion
Pisiform, hook of hamate and base of 5th metacarpal
152
Flexor carpi ulnaris origin
Humeral head: common flexor tendon from medial epicondyle of humorous
Ulnar head: posterior surface of proximal ⅔ of ulna
153
Flexor carpi ulnaris nerve
Ulnar nerve
154
Flexor carpi radialis actions
Flex abduct wrist at radiocarpal joint assist to flex the elbow at humeroulnar joint
154
Flexor carpi radialis origin
Common flexor tendon from medial epicondyle of humerus
155
Flexor carpi radialis insertion
Bases of the second and third metacarpals
156
Flexor carpi radialis nerve
Median nerve
156
FLEXOR DIGITORUM superficialis origin
Common flexor tendon from medial epicondial of the humorous ulnar Collateral legament coronoid process of ulna interosseous membrane and proximal shaft of radius
157
FLEXOR DIGITORUM superficialis insertion
Sides of middle phalanges of second through fifth fingers
158
FLEXOR DIGITORUM superficialis nerve
Median
159
FLEXOR DIGITORUM superficialis actions
Flex the second through fifth fingers flex the wrist at the radiocarpel joint
160
Flexor digitorum profundus origin
Anterior and medial surface of proximal ¾ of ulna
160
Flexor digitorum profundus insertion
Bases of distal phalanges palmer surface of second through fifth fingers
161
Flexor digitorum profundus actions
Flex the second through fifth fingers at metacarpal phalangeal and distal interphangeal joints. Assist to flex the wrist at the radiocarpel joint
162
PALMARIS longus origin
Common flexor tendon of medial epicondial of humor
162
PALMARIS longus actions
Tense , the palmer facia flex the wrist at the radiocarpal joint may assist to flex the elbow at the humeroulnar joint
163
Flexor digitorum profundus nerve
Median and ulnar nerve
164
PALMARIS longus insertion
Flexor retinaculum and palmer aponeurosis
165
PALMARIS longus nerve
Median nerve
166
Pronator quadratus origin
Medial anterior surface of distal ulna
167
Pronator quadratus insertion
Lateral anterior surface of distal radius
168
Pronator quadratus action
Pronate at radioulnar joint
169
Pronator quadratus nerve
Median nerve
170
Extensor carpi radialis longus (ecrl) origin
Distill one third of lateral supercondular ridge of the humorus
171
Extensor carpi radialis longus (ecrl) actions
Extends abducts the wrist at the radiocarpel Joint assist to flex the elbow at the humuroulnar joint
171
Extensor carpi radialis longus (ecrl) insertion
Base of second metacarpal
172
Extensor carpi radialis longus (ecrl) nerve
Radial
173
Extensor carpi radialis brevis insertion
Base of the second metacarpal
173
Extensor carpi radialis brevis (ECRB) origin
Common extensor tendon from the lateral epicondyle of the humerus
174
Extensor carpi radialis brevis actions
Abduct and extends the wrist at the radiocarpel Joint assist to flex the elbow at the humeroulnar joint
175
Extensor carpi radialis brevis nerve
Radial
176
Supinator origin
Lateral epicondial of the humorous radial collateral ligament annular ligament and supinator Crest of the ulna
177
Supinator insertion
Anterior lateral surface of proximal ⅓ of radial shaft
178
Supinator nerve
Radial
178
Supinator actions
Supernates the forearm at the radioulnar joint
179
Adductor pollicis longus
Posterior surface of the radius ulna and interrocious membrane
180
Adductor pollicis longus insertion
Base of first metacarpel
181
Abductor pollicis longus actions
Abducts extends the thumb at the carpo metacarpal and radially deviates the wrist at radiocarpal joint forms anterior border of snuff box
182
Adductor pollicis longus nerve
Radial
183
Extensor pollicis longus origin
Posterior surface of ulna and interousious membrane
184
Extensor pollicis longus insertion
Base of distal phalanx of thumb
185
Extensor pollicis longus actions
Extend thumb abduct wrists at radiocarpal
186
Extensor pollicis longus nerve
Radial
187
Extensor pollicis brevis origin
Posterior surface of radius and interosseous membrane
188
Extensor pollicis brevis insertion
Base of proximal phalanx of thumb
189
Extensor pollicis brevis actions
Extend thumb at mcp, cmc joints abduct wrist at radiocarpal
190
Extensor pollicis brevis nerve
Radial
191
Flexor pillicis longus origin
Anterior surface of the radius and interosseous membrane
191
Flexor pillicis longus insertion
Base of distal phalanx of thumb
192
Flexor pillicis longus actions
Flex the thumb (mcp cmc ip joints) assist to flex the right at radiocarpal joint
193
Deltoid origin
Lateral ⅓ of clavicle acromion and spine of scapula
193
Flexor pillicis longus innovation
Median nerve
194
Deltoid actions
Abducts gh
Anterior deltoid flexes medial rotate horizontally adducts gh
Posterior extends laterally rotates horizontally abducts gh joint
194
Deltoid insertion
Deltoid tuberocity
195
Deltoid nerve
Axillary
196
Biceps brachii insertion
Tuberocity of radius and aponeurosis of biceps brachii
197
Biceps brachii origin
Supraglenoid tubercle long head
Coracoid process of scapula short head
198
Biceps brachii actions
Flex humeroulnar supinates radioulnar flexes gh
199
Biceps brachii nerve
`Musculocutaneous
200
Triceps brachi origin
Infraglenoid tubercle of scapula long head posterior surface of humorous lat and medial head
201
Triceps brachi insertion
Olecranon process of ulna
202
Brachioradialis actions
Flexes humeroulnar assist to pronate and supinate forearm when resisted
202
Brachioradialis nerve
Radial
203
Triceps brachi actions
Extend humeroulnar adducts and extends gh
204
Triceps brachi nerve
Radial
205
Brachioradialis insertion
Styloid process of radius
206
Brachioradialis origin
Proximal ⅔ of lateral supracondylar ridge of humorous
207
Serratus Posterior Superior - Innervation
T1-T4
208
Serratus Posterior Superior - Origin
Spinous processes of C7-T3
209
Serratus Posterior Superior - Insertion
posterior surfaces of ribs 2-5
210
Serratus Posterior Superior - actions
elevate the ribs during inhalation
211
Serratus Posterior Inferior - Innervation
T9-T12
212
Serratus Posterior Inferior - Origin
Spinous Processes of T12-L3
213
Serratus Posterior Inferior - Insertion
posterior surface of ribs 9-12
214
Serratus Posterior Inferior - actions
depress the ribs during exhalation
215
External intercostals - innervation
thoracic nerve
216
external intercostals - origin
inferior border of the rib above
217
external intercostals - insertion
superior border of the rib below
218
external intercostals - actions
draw the ribs superiorly (increases the space of the thoracic cavity) to assist with inhalation
219
internal intercostals - origin
inferior border of the rib above
220
internal intercostals - innervation
thoracic nerve
221
internal intercostals - insertion
superior border of the rib below
222
internal intercostals - actions
draw the ribs inferiorly (decreasing the space of the thoracic cavity) to assist with exhalation
223
diaphragm - innervation
phrenic nerve from the cervical plexus: C3, C4, C5 (keeps the diaphragm alive)
224
diaphragm - origin
inner surfaces of the the lower 6 ribs,
upper 2 or 3 lumbar vertebrae,
inner part of xiphoid process
225
diaphragm - insertion
central tendon
225
diaphragm - actions
draw down the central tendon of the diaphragm
increase the volume of the thoracic cavity during inhalation
226
rectus abdominis - innervation
T5-T12, ventral rami
227
rectus abdominis - origin
pubic crest
pubic symphysis
228
rectus abdominis - insertion
cartilage of ribs 5-7
xiphoid process
229
rectus abdominis - actions
FLEX the vertebral column
TILT pelvis POSTERIORLY
230
external obliques - innervation
T5-T12
231
external obliques - origin
external surfaces of ribs 5-12
232
external obliques - insertion
anterior part of the iliac crest,
rectus sheath to the linea alba
233
external obliques - actions
LATERALLY FLEX vertebral column to same side
ROTATE vertebral column to the opposite side
FLEX vertebral column
COMPRESS abdominal contents
233
internal obliques - innervation
iliohypogastric nerve and the ilioinguinal nerve, ventral divisions
233
internal obliques - origin
lateral inguinal ligament,
iliac crest,
thoracolumbar fascia
234
internal obliques - insertion
internal surfaces of the lower 3 ribs,
rectus sheath to the linea alba
235
internal obliques - actions
FLEX, LATERALLY FLEX, and ROTATE vertebral column to the same side,
COMPRESS the abdominal contents
236
transverse abdominis - innervation
T7-12, L1, iliohypogastric nerve and the ilioinguinal nerve, ventral divisions
237
transverse abdominis - origin
lateral inguinal ligament,
iliac crest,
thoracolumbar fascia,
internal surfaces of the lower 6 ribs
238
transverse abdominis - insertion
rectus sheath to the linea alba
239
transverse abdominis - actions
COMPRESS abdominal contents
240
Semispinalis Capitis - innervation
cervical nerve
241
Semispinalis Capitis - Origin
TVPs of C4-T5
242
Semispinalis Capitis - Insertion
between the superior and inferior lines of the occiput
243
Semispinalis Capitis - actions
EXTEND head and vertebral column
244
Iliacus - Innervation
Femoral nerve
245
Iliacus - origin
Iliac fossa
246
Iliacus - insertion
Lesser trochanter
247
Psoas Major - Innervation
Lumbar plexus
248
Psoas Major - origin
Bodies and transverse processes of lumbar vertebrae
248
Piriformis - Innervation
Sacral plexus
248
Iliacus - actions
With origin fixed:
FLEX the coxal joint
May LATERALLY FLEX the coxal joint
With insertion fixed:
FLEX the trunk toward the thigh
TILT the pelvis ANTERIORLY
249
Psoas Major - insertion
Lesser trochanter
250
Psoas Major - actions
With origin fixed:
FLEX the coxal joint
May LATERALLY ROTATE coxal joint
With insertion fixed:
FLEX the trunk toward the thigh
TILT the pelvis ANTERIORLY
Unilaterally: assist to LATERALLY FLEX the lumbar spine
251
Piriformis - insertion
Superior aspect of greater trochanter
251
Piriformis - origin
Anterior surface of sacrum
252
Quadratus Femoris - origin
Lateral border of Ischial tuberosity
253
Quadratus Femoris - Innervation
Sacral plexus
254
Piriformis - actions
LATERALLY ROTATE the coxal joint
ABDUCT the coxal joint when the hip is flexed
255
Quadratus Femoris - insertion
Intertrochanteric crest between the greater and lesser trochanters
256
Quadratus Femoris - actions
LATERALLY ROTATE the coxal joint
257
Obturator Internus - Innervation
Sacral plexus
258
Obturator internus - Origin
Obturator membrane & inferior surface of foramen
259
Obturator internus - actions
LATERALLY ROTATE the coxal joint
260
Obturator internus - insertion
Medial surface of greater trochanter
261
Obturator externus - Innervation
Obturator nerve
262
Obturator externus - actions
LATERALLY ROTATE the coxal joint
262
Obturator externus - origin
Rami of pubis and ischium,
Obturator membrane
263
Gemellus Superior - Innervation
Sacral plexus
263
Obturator externus - insertion
Trochanteric fossa of femur
264
Gemellus superior - origin
Ischial spine
265
Gemellus superior - insertion
Medial surface of greater trochanter
266
Gemellus superior - actions
LATERALLY ROTATE the coxal joint
267
Gemellus inferior - Innervation
Sacral plexus
268
Gemellus inferior - actions
LATERALLY ROTATE the coxal joint
268
Quadratus Lumborum - innervation
Lumbar plexus (T12-L3)
269
Gemellus inferior - origin
Ischial tuberosity
270
Gemellus inferior - insertion
Medial surface of the greater trochanter
271
Quadratus Lumborum - insertion
Last rib,
TVPs of L1-L4
272
Quadratus Lumborum - origin
Posterior iliac crest
273
Quadratus Lumborum - Actions
LATERALLY TILT pelvis
LATERALLY FLEX the vertebral column
Assist to EXTEND the vertebral column
FIX the last rib during forced inhalation and exhalation
273
Gluteus Maximus - Innervation
Inferior gluteal nerve (L5, S1, S2)
274
Gluteus Maximus - insertion
Upper fibers: Iliotibial tract
Lower fibers: gluteal tuberosity
275
Gluteus Maximus - Origin
Coccyx, edge of sacrum, posterior iliac crest, sacrotuberous and sacroiliac ligaments
276
Gluteus Maximus - Actions
EXTEND
LATERALLY ROTATE
ABDUCT
The coxal joint
Lower fibers: ADDUCT the coxal joint
277
Gluteus Medius - Origin
Gluteal surface of the ilium,
Between posterior and anterior gluteal lines,
Just below iliac crest
277
Gluteus Medius - Innervation
Superior gluteal nerve, L4, L5, and S1
278
Gluteus Medius - Insertion
Lateral aspect of greater trochanter
279
Gluteus Medius - Actions
Posterior fibers:
ABDUCT, EXTEND, LATERALLY ROTATE the coxal joint
POSTERIORLY TILT and DEPRESS the same side of the pelvis at the hip joint
Middle fibers:
ABDUCT the coxal joint
DEPRESS the same side of the pelvis at the hip joint
Anterior fibers:
ABDUCT, FLEX, MEDIALLY ROTATE the coxal joint
ANTERIORLY TILT and DEPRESS the same side of the pelvis at the hip joint
280
Masseter - innervation
trigeminal nerve (CN V) mandibular division
281
masseter - origin
Zygomatic arch
282
masseter - actions
ELEVATE TMJ
may assist to PROTRACT TMJ
282
masseter - insertion
angle and ramus of mandible
283
temporalis - origin
temporal fossa & fascia
283
temporalis - innervation
trigeminal nerve (CN V) mandibular division
284
lateral pterygoid - innervation
trigeminal nerve (CN V)
284
temporalis - insertion
coronoid process and anterior edge of ramus of the mandible
285
temporalis - actions
ELEVATE TMJ
RETRACT TMJ
286
lateral pterygoid - origin
Superior head:
infratemporal surface and crest of greater wing of sphenoid
Inferior head:
lateral surface of lateral pterygoid plate of sphenoid
287
lateral pterygoid - insertion
articular disc and capsule of TMJ,
neck of mandible
288
lateral pterygoid - actions
Unilaterally:
LATERALLY DEVIATE the TMJ to the OPPOSITE side
Bilaterally:
PROTRACT the TMJ
289
medial pterygoid - origin
medial surface of lateral pterygoid plate of sphenoid,
tuberosity of maxilla
290
medial pterygoid - innervation
trigeminal nerve (CN V)
291
medial pterygoid - insertion
medial surface of ramus of the mandible
292
medial pterygoid - actions
Unilaterally:
LATERALY DEVIATE the TMJ to the OPPOSITE side
Bilaterally:
ELEVATE the TMJ
PROTRACT the TMJ
293
occipitofrontalis - innervation
facial nerve (CN VII)
294
occipitofrontalis - origin
Both: galea aponeurotica
295
occipitofrontalis - actions
frontalis:
raise the eyebrows
wrinkle the forehead
occipitalis:
anchor and retract the galea posteriorly
296
occipitofrontalis - insertion
frontalis: skin superior to eyebrows
occipitalis: superior nuchal line of occiput
297
platysma - innervation
facial (CN VII)
298
platysma - origin
fascia covering superior part of pectoralis major
299
platysma - insertion
base of mandible,
skin of lower part of face
300
platysma - actions
assist to DEPRESS the TMJ
TIGHTEN the fascia of the neck
DRAW DOWN corner of the mouth
