All muscles Flashcards

1
Q

Pectoralis Major - Innervation

A

UPPER FIBRES: Lateral pectoral nerve
LOWER FIBRES: Lateral and medial pectoral nerves

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2
Q

Pectoralis Major - Origin

A

Medial 1/2 clavicle
Sternum
Cartilage of ribs 1-6

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3
Q

Pectoralis major - Insertion

A

Crest of greater tubercle of humerus

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4
Q

Pectoralis Major - Actions

A

ALL FIBRES:
ADDUCT the shoulder at the glenohumeral joint
MEDIALLY ROTATE the shoulder at the glenohumeral joint
Assist to ELEVATE the thorax during forced inhalation (with the arm fixed)

UPPER FIBRES:
FLEX the shoulder at the glenohumeral joint
HORIZONTALLY ADDUCT the shoulder at the glenohumeral joint

LOWER FIBRES:
EXTEND the shoulder at the glenohumeral joint

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5
Q

Quadratus Lumborum - Innervation

A

Lumbar plexus T12, L1, 2, 3

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6
Q

Quadratus Lumborum - Origin

A

Posterior iliac crest

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7
Q

Quadratus Lumborum - Insertion

A

Last rib
Transverse processes of L1-4

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8
Q

Quadratus Lumborum - Actions

A

UNILATERALLY:
LATERALLY TILT (ELEVATE) the pelvis
LATERALLY FLEX the vertebral column to the SAME SIDE

BILATERALLY:
Assist to EXTEND the vertebral column
FIX the last rib during forced inhalation and exhalation
TILT the pelvis anteriorly

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9
Q

INTERCOSTALS (External & Internal) - Innervation

A

Thoracic nerve

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10
Q

INTERCOSTALS (External & Internal) - Origin

A

Inferior border of the rib above

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11
Q

INTERCOSTALS (External & Internal) - Insertion

A

Superior border of the rib below

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12
Q

INTERCOSTALS (External & Internal) - Actions

A

EXTERNAL:
Draw the ribs superiorly (Increasing the space of the thoracic cavity) to assist with inhalation

INTERNAL:
Draw the ribs inferiorly (decreasing the space of the thoracic cavity) to assist with exhalation

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13
Q

Rectus Abdominis - Innervation

A

T5, 6, 7-11, T12, ventral rami

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14
Q

Rectus Abdominis - Origin

A

Pubic crest
Pubic symphysis

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15
Q

Rectus Abdominis - Insertion

A

Cartilage of ribs 5-7
Xiphoid process

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16
Q

Rectus Abdominis - Actions

A

FLEX the vertebral column
TILT the pelvis posteriorly

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17
Q

External Obliques - Innervation

A

(T5, 6), T7-11, T12

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18
Q

External Obliques - Origin

A

External surfaces of ribs 5-12

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19
Q

External Obliques - Insertion

A

Anterior part of the iliac crest
Rectus sheath to linea alba

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20
Q

External Obliques - Actions

A

UNILATERALLY:
LATERALLY FLEX vertebral column to same side
ROTATE vertebral column to opposite side

BILATERALLY:
FLEX the vertebral column
COMPRESS the abdominal contents

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21
Q

Internal Obliques - Innervation

A

T7, 8, T9-12, L1, Iliohypogastric and ilioinguinal, Ventral rami

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22
Q

Internal obliques - origin

A

Lateral inguinal ligament
Iliac crest
Thoracolumbar fascia

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23
Q

Internal obliques - insertion

A

Internal surface of the lower 3 ribs
Rectus sheath to linea alba

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24
Q

Internal obliques - actions

A

UNILATERALLY:
LATERALLY FLEX vertebral column to same side
ROTATE vertebral column to same side

BILATERALLY:
FLEX the vertebral column
COMPRESS the abdominal contents

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25
Diaphragm - innervation
Phrenic C3, 4, 5
26
Diaphragm - Origin
COSTAL ATTACHMENT: Inner surface of the lower 6 ribs LUMBAR ATTACHMENT: Upper 2 or 3 lumbar vertebrae STERNAL ATTACHMENT: Inner part of xiphoid process
27
Diaphragm - insertion
Central tendon
28
Diaphragm - Actions
DRAW DOWN the central tendon of the diaphragm INCREASE the volume of the thoracic cavity during inhalation
29
Iliopsoas (Psoas Major & Iliacus) - Innervation
PSOAS MAJOR: Lumbar plexus L1, 2, 3, 4 ILIACUS: Femoral nerve L(1), 2, 3, 4
30
Iliopsoas (Psoas Major & Iliacus) - origin
PSOAS MAJOR: Bodies and transverse processes of lumbar vertebrae ILIACUS: Iliac fossa
31
Iliopsoas (Psoas Major & Iliacus) - insertion
BOTH: Lesser trochanter
32
Iliopsoas (Psoas Major & Iliacus) - actions
WITH ORIGIN FIXED: FLEX the hip at the coxal joint May LATERALLY ROTATE the hip at the coxal joint WITH INSERTION FIXED: FLEX the trunk toward the thigh TILT the pelvis anteriorly PSOAS MAJOR ONLY: UNILATERALLY: Assist to LATERALLY FLEX the lumbar spine
33
Tibialis Anterior - innervation
Deep fibular nerve, L4, L5, S1
34
Extensor Digitorum Longus (EDL) - innervation
Deep fibular nerve, L4, L5, S1
35
Fibularis Longus (aka Peroneus Longus) - innervation
Superficial fibular nerve, L4, L5, S1
36
Soleus - innervation
Tibial nerve, L5, S1, S2
37
Gastrocnemius - innervation
Tibial nerve, S1, S2
38
gastrocnemius - actions
PLANTAR FLEX the ankle at the talocrural joint FLEX the knee at the tibiofemoral joint
39
gastrocnemius - origin
condyles of the femur (posterior surface)
40
gastrocnemius - insertion
calcaneus via calcaneal tendon
41
EDL - actions
EXTEND 2nd-5th toes at the metatarsophalangeal and interphalangeal joints DORSIFLEX the ankle at the talocrural joint EVERT the foot at the subtalar joint
42
EDL - origin
lateral condyle of the tibia proximal anterior shaft of the fibula interosseous membrane
43
EDL - insertion
middle and distal phalanges of the 2nd-5th toes
44
Fibularis Longus - actions
EVERT the foot at the subtalar joint assist to PLANTAR FLEX the ankle at the talocrural joint
45
Fibularis longus - origin
head of the fibula proximal 2/3 of lateral fibula
46
fibularis longus - insertion
base of 1st metatarsal medial cuneiform
47
tibialis anterior - actions
DORSIFLEX the ankle at the talocrural joint INVERT the foot at the subtalar joint
48
tibialis anterior - origin
lateral condyle of the tibia proximal lateral surface of the tibia interosseous membrane
49
tibialis anterior - insertion
medial cuneiform base of the 1st metatarsal
50
soleus - actions
PLANTAR FLEX the ankle at the talocrural joint
51
soleus - origin
soleal line proximal posterior surface of the tibia posterior aspect of the head of the fibula
52
soleus - insertion
calcaneus via the calcaneal tendon
53
Semimembranosus - Origin
Ischial tuberosity
54
Semimembranosus - Insertion
Posterior aspect of the medial condyle of the tibia
55
Semimembranosus - Innervation
Sciatic Nerve (tibial branch)
56
Semimembranosus - Actions
FLEX the tibiofemoral joint MEDIALLY ROTATE the flexed tibiofemoral joint EXTEND the coxal joint Assist to MEDIALLY ROTATE the coxal joint BILATERALLY: TILT the pelvis posteriorly
57
Semitendinosus - Origin
Ischial tuberosity
58
Semitendinosus - Insertion
Proximal, medial shaft of the tibia at the pes anserinus tendon
59
Semitendinosus - Actions
FLEX the tibiofemoral joint MEDIALLY ROTATE the flexed tibiofemoral joint EXTEND the coxal joint Assist to MEDIALLY ROTATE the coxal joint Bilaterally: TILT the pelvis posteriorly
60
Semitendinosus - Innervation
Sciatic nerve ( tibial branch )
61
Rectus Femoris - Origin
Anterior inferior iliac spine (AIIS)
62
Rectus Femoris - Insertion
Tibial tuberosity via the patella and patellar ligament
63
Rectus Femoris - Actions
EXTEND the knee at the tibiofemoral joint FLEX the hip at the coxal joint
64
Rectus Femoris - Innervation
Femoral nerve
65
Biceps Femoris - Innervation
Sciatic nerve: Long head (tibial branch), Short head (fibular branch)
66
Biceps Femoris - Origin
Long head: Ischial tuberosity Short head: lateral lip of the linea aspera
67
Biceps Femoris - Insertion
Head of the fibula
68
Biceps Femoris - Actions
FLEX the knee at the tibiofemoral joint LATERALLY ROTATE the flexed tibiofemoral joint Long Head: EXTEND the hip at the coxal joint assist to LATERALLY ROTATE the coxal joint Bilaterally: TILT the pelvis posteriorly
69
Vastus Group - Actions
Extend the knee at the tibiofemoral joint
70
Vastus Group - Insertion
Tibial tuberosity via the patella and the patellar ligament
71
Vastus Group - Innervation
Femoral nerve
72
Vastus Group (3) - Origin
Vastus Medialis: medial lip of the linea aspera Vastus Lateralis: lateral lip of the linea aspera gluteal tuberosity greater trochanter Vastus Intermedius: Anterior and lateral shaft of femur
73
Tensor Fascia Latae (TFL) - Innervation
Superior Gluteal Nerve
74
Tensor Fascia Latae (TFL) - Origin
Iliac crest posterior to the ASIS (anterior superior iliac spine)
75
Tensor Fascia Latae (TFL) - Insertion
Iliotibial tract
76
Tensor Fascia Latae (TFL) - Actions
FLEX the hip at the coxal joint MEDIALLY ROTATE the hip at the coxal joint ABDUCT the hip at the coxal joint
77
Gluteus Maximus - Innervation
Inferior Gluteal Nerve
78
Gluteus Maximus - Origin
Coccyx Edge of sacrum Posterior iliac crest Sacrotuberous and sacroiliac ligaments
79
Gluteus Maximus - Insertion
Upper fibers: iliotibial tract Lower fibers: gluteal tuberosity
80
Gluteus Maximus - Actions
All fibres: EXTEND the coxal joint LATERALLY ROTATE the coxal joint ABDUCT the coxal joint Lower fibres: ADDUCT the coxal joint
81
Gluteus Medius - Innervation
Superior Gluteal Nerve
82
Gluteus Medius - Origin
Gluteal surface of ilium Between posterior and anterior gluteal lines just below the iliac crest
83
Gluteus Medius - Insertion
Lateral aspect of the greater trochanter
84
Gluteus Medius - Actions
All: ABDUCT the coxal joint Anterior fibres: FLEX & MEDIALLY ROTATE the coxal joint Posterior fibres: EXTEND & LATERALLY ROTATE the coxal joint
85
Adductor Longus - Innervation
Obturator Nerve
86
Adductor Longus - Origin
Pubic tubercle
87
Adductor Longus - Insertion
Pectineal line & medial lip of linea aspera
88
Adductor Longus - Actions
ADDUCT the hip at the coxal joint MEDIALLY ROTATE the hip at the coxal joint Assist to FLEX the hip at the coxal joint
89
Vastus Lateralis - Origin
Lateral lip of linea aspera Gluteal tuberosity Greater trochanter
90
Vastus medialis - origin
Medial lip of linea aspera
91
Vastus intermedius - origin
Anterior and lateral shaft of femur
92
Teres Major - Innervation
Lower subscapular nerve
93
Teres major - Origin
Inferior angle Lower 1/3 of lateral border of the scapula
94
Teres major - insertion
Crest of the lesser tubercle of the humerus
95
Teres major - actions
EXTEND the shoulder at the glenohumeral joint ADDUCT the shoulder at the glenohumeral joint MEDIALLY ROTATE the shoulder at the glenohumeral joint
96
Supraspinatus - Innervation
Suprascapular nerve
97
Supraspinatus - origin
Supraspinous fossa of the scapula
98
Supraspinatus - Insertion
Greater tubercle of the humerus
99
Supraspinatus - Actions
ABDUCT the shoulder at the glenohumeral joint STABILIZE the head of the humerus in the glenoid cavity
100
Infraspinatus - Innervation
Suprascapular nerve
101
Infraspinatus - origin
Infraspinous fossa of the scapula
102
Infraspinatus - insertion
Greater tubercle of the humerus
103
Infraspinatus - actions
LATERALLY ROTATE the shoulder at the glenohumeral joint ADDUCT the shoulder at the glenohumeral joint STABILIZE the head of the humerus in the glenoid cavity
104
Teres Minor - Innervation
Axillary nerve
105
Teres minor - origin
Upper 2/3 of lateral border of the scapula
106
Teres minor - insertion
Greater tubercle of the humerus
107
Teres minor - actions
LATERALLY ROTATE the shoulder at the glenohumeral joint ADDUCT the shoulder at the glenohumeral joint STABILIZE the head of the humerus in glenoid cavity
108
Subscapularis - Innervation
Upper and lower subscapular nerves
109
Subscapularis - origin
Subscapular fossa of the scapula
110
Subscapularis - insertion
Lesser tubercle of the humerus
111
Subscapularis - Actions
MEDIALLY ROTATE the shoulder at the glenohumeral joint STABILIZE the head of the humerus in glenoid cavity
112
Latissimus Doris - Innervation
Thoracodorsal nerve
113
Latissimus dorsi- origin
Inferior angle of the scapula Spinous processes of the last 6 thoracic vertebrae Last 3 or 4 ribs Thoracolumbar fascia Posterior iliac crest
114
Latissimus Doris - insertion
Intertubercular groove of the humerus
115
Latissimus Doris - actions
EXTEND the shoulder at the glenohumeral joint ADDUCT the shoulder at the glenohumeral joint MEDIALLY ROTATE the shoulder at the glenohumeral joint
116
Deltoid - Innervation
Axillary nerve
117
Deltoid - origin
Lateral 1/3 of the clavicle Acromion process Spine of the scapula
118
Deltoid - insertion
Deltoid tuberosity
119
Deltoid - actions
ALL: ABDUCT the glenohumeral joint ANTERIOR FIBRES: FLEX the glenohumeral joint MEDIALLY ROTATE the glenohumeral joint HORIZONTALLY ADDUCT the glenohumeral joint POSTERIOR FIBRES: EXTEND the glenohumeral joint LATERALLY ROTATE the glenohumeral joint HORIZONTALLY ABDUCT the glenohumeral joint
120
Biceps brachii - Innervation
Musculocutaneous nerve
121
Biceps brachii - origin
SHORT HEAD: Coracoid process of the scapula LONG HEAD: Supraglenoid tubercle of the scapula
122
Biceps brachii - actions
FLEX the humeroulnar joint (elbow) SUPINATE the radioulnar joint (forearm) FLEX the glenohumeral joint (shoulder)
123
Triceps brachii - Innervation
Radial nerve
124
Triceps brachii - origin
LONG HEAD: Infraglenoid tubercle of the scapula LATERAL HEAD: Posterior surface of proximal 1/2 of humerus MEDIAL HEAD: Posterior surface of distal 1/2 humerus
125
Triceps brachii - insertion
Olecranon process of the ulna
126
Triceps brachii - actions
ALL: EXTEND the humeroulnar joint LONG HEAD: EXTEND the glenohumeral joint ADDUCT the glenohumeral joint
127
Brachioradialis - Innervation
Radial nerve
128
Brachioradialis - origin
Proximal 2/3 of the lateral supracondylar ridge of the humerus
129
Brachioradialis - insertion
Styloid process of the radius
130
Brachioradialis - actions
FLEX the humeroulnar joint Assist to PRONATE and SUPINATE the humeroradial joints when these movements are resisted
131
Biceps Brachii - Insertion
Tuberosity of the radius Aponeurosis of the biceps brachii
132
Sternocleidomastoid - Innervation
Spinal accessory nerve (CN XI), C2, 3
133
Sternocleidomastoid - Origin
Sternal head: top of the manubrium Clavicular head: medial 1/3 of the clavicle
134
Sternocleidomastoid - Insertion
Mastoid process of the temporal bone Lateral portion of the superior nuchal line of the occiput
135
Sternocleidomastoid - actions
Unilaterally: LATERALLY FLEX the head and neck to the same side ROTATE the head and neck to the opposite side Bilaterally: FLEX the neck Assist to ELEVATE the ribcage during inhalation
136
Scalenes - Innervation
C(3), 4-8
137
Scalenes - SIN # to help remember origin and insertions
136 127 267 Ant Mid Pos [ 1st rib, C3-C6 ] [ 1st rib, C2-C7 ] [ 2nd rib, C6-C7 ]
138
Scalenes - Origin
Anterior: Transverse processes of C3 to C6 Middle: Transverse processes of C2 to C7 Posterior: Transverse processes of C6 to C7
139
Scalenes - Insertion
Anterior:1st Rib Middle:1st Rib Posterior:2nd Rib
140
Scalenes - Actions
Unilaterally: LATERALLY FLEX the head and neck to the same side (all 3) ROTATE the head and neck to the opposite side (all 3) Bilaterally: FLEX the head and neck (anterior only) ELEVATE the ribs during inhalation (all 3)
141
Levator Scapulae - Innervation
Cervical and dorsal scapular nerves
142
Levator scapulae - origin
Transverse processes of C1 to C4
143
Levator scapula - insertion
Medial border of the scapula between the superior angle and the superior portion of the spine of the scapula
144
Levator Scapulae - Actions
Unilaterally: ELEVATE the scapulothoracic joint DOWNWARDLY ROTATE the scapulothoracic joint LATERALLY FLEX the head and neck to same side ROTATE the head and neck to same side Bilaterally: EXTEND the head and neck
145
Splenius Capitus - Innervation
Cervical nerve
146
Splenius Capitus - Origin
Inferior 1/2 of ligamentum nuchae and spinous processes of C7 to T4
147
Splenius Capitus - Insertion
Mastoid process and lateral portion of superior nuchal line
148
Splenius Capitus - Actions
Unilaterally: ROTATE the head and neck to same side LATERALLY FLEX the head and neck to same side Bilaterally: EXTEND the head and neck
149
Trapezius - innervation
Spinal portion of cranial nerve XI (spinal accessory nerve) and ventral ramus C2, 3, 4
150
Trapezius - Origin
External occipital protuberance Medial portion of superior nuchal line of the occiput Ligamentum nuchae Spinous processes of C7 through T12
151
Trapezius - insertion
Lateral 1/3 of clavicle Acromion process Spine of scapula
152
Trapezius - Actions (upper fibres: 5, middle fibres: 2, lower fibres: 2)
*UPPER FIBRES* Bilaterally: EXTEND the head and neck Unilaterally: LATERALLY FLEX the head and neck to same side ROTATE the head and neck to opposite side ELEVATE the scapulothoracic joint (scapula) UPWARDLY ROTATE the scapulothoracic joint *MIDDLE FIBRES* ADDUCT the scapulothoracic joint STABILIZE the scapulothoracic joint *LOWER FIBRES* DEPRESS the scapulothoracic joint UPWARDLY ROTATE the scapulothoracic joint
153
Rhomboids - Major and Minor - innervation
Dorsal scapular nerve
154
Rhomboids - origin
MINOR: spinous processes of C7 - T1 MAJOR: spinous processes of T2 - T5
155
Rhomboids - insertion
MINOR: upper portion of medial border of the scapula, across from the spine of the scapula MAJOR: medial border of the scapula between the spine of the scapula and inferior angle
156
Rhomboids - actions
ADDUCT the scapulothoracic joint ELEVATE the scapulothoracic joint DOWNWARDLY ROTATE the scapulothoracic joint