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Muscle Packet > Summer 1 > Flashcards

Summer 1 Flashcards

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1
Q

What is the SA of Psoas Major?

A

Sides of bodies of T12- L5 and IV discs, TP of lumbar vertebrae.

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2
Q

What is the IA of Psoas Major?

A

Lesser trochanter of femur.

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3
Q

What is the action of Psoas Major?

A

Flexes hip.

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4
Q

What is the nerve supply of Psoas Major?

A

AR L1, L2, L3.

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5
Q

What is the PA of Rectus Femoris?

A

AllS and ilium superior to acetabulum.

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6
Q

What is the DA of Rectus Femoris?

A

Quadriceps tendon; Patella, tibial tubercle via patellar ligament.

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7
Q

What are the actions of Rectus Femoris?

A

Hip flexion, knee extension.

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8
Q

What is the nerve supply of Rectus Femoris?

A

Femoral (L2, L3, L4).

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9
Q

What is the PA of Vastus Lateralis?

A

Linea aspera (lateral lip), greater trochanter.

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10
Q

What is the DA of Vastus Lateralis?

A

Quadriceps tendon; Patella, tibial tubercle via patellar ligament.

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11
Q

What is the action of Vastus Lateralis?

A

Knee extension.

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12
Q

What is the nerve supply of Vastus Lateralis?

A

Femoral (L2, L3, L4).

aponeurosis (lateral patellar retinaculum) attaches to tibia and patella

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13
Q

What is the PA of Vastus Medialis?

A

Linea aspera (medial lip), intertrochanteric line.

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14
Q

What is the DA of Vastus Medialis?

A

Quadriceps tendon; Patella, tibial tubercle via patellar ligament.

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15
Q

What is the action of Vastus Medialis?

A

Knee extension.

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16
Q

What is the nerve supply of Vastus Medialis?

A

Femoral (L2, L3, L4).

aponeurosis (medial patellar retinaculum) attaches to tibia and patella

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17
Q

What are the oblique fibers of Vastus Medialis called?

A

Vastus Medialis Oblique (VMO).

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18
Q

What is the PA of Vastus Intermedius?

A

Anterior and lateral shaft of femur.

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19
Q

What is the DA of Vastus Intermedius?

A

Quadriceps tendon; Patella, tibial tubercle via patellar ligament.

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20
Q

What is the action of Vastus Intermedius?

A

Knee extension.

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21
Q

What is the nerve supply of Vastus Intermedius?

A

Femoral (L2, L3, L4).

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22
Q

What is the PA of Tibialis Anterior?

A

Lateral condyle and superior lateral tibia, and interosseous membrane.

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23
Q

What is the DA of Tibialis Anterior?

A

Medial and inferior surfaces of medial cuneiform and base of 1st metatarsal.

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24
Q

What are the actions of Tibialis Anterior?

A

Ankle dorsiflexion, foot inversion.

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25
What is the nerve supply of Tibialis Anterior?
Deep fibular (L4, L5).
26
What are the attachments of the Sternocleidomastoid?
SA: Mastoid process and lateral half of superior nuchal line. IA: Sternal head: Anterior surface of manubrium of sternum. Clavicular head: Superior surface of medial third of clavicle.
27
What is the nerve supply of the Sternocleidomastoid?
N: Spinal accessory (CN XI, motor); AR C3, C4 (pain and proprioception).
28
What is the action of the Sternocleidomastoid?
A: Bilaterally: Flexes the neck. If cervical vertebrae are fixed, may elevate manubrium and medial clavicles. Unilaterally: Ipsilateral lateral neck flexion and contralateral rotation.
29
What is the origin of the Flexor Carpi Ulnaris?
PA: Humeral head: medial epicondyle of humerus (common flexor origin). Ulnar head: olecranon and posterior border of ulna (via aponeurosis).
30
What is the insertion of the Flexor Carpi Ulnaris?
DA: Pisiform, hook of hamate, 5th metacarpal.
31
What is the action of the Flexor Carpi Ulnaris?
A: Wrist flexion, ulnar deviation.
32
What is the nerve supply of the Flexor Carpi Ulnaris?
N: Ulnar (C7, C8).
33
What is the origin of the Extensor Carpi Ulnaris?
PA: Lateral epicondyle of humerus, posterior border of the ulna via a shared aponeurosis.
34
What is the insertion of the Extensor Carpi Ulnaris?
DA: Dorsal aspect of base of 5th metacarpal.
35
What is the action of the Extensor Carpi Ulnaris?
A: Wrist extension, ulnar deviation.
36
What is the nerve supply of the Extensor Carpi Ulnaris?
N: Radial (posterior interosseous) (C7, C8).
37
What is the origin of the Abductor Pollicis Longus?
PA: Posterior surface of proximal halves of ulna, radius, and interosseous membrane.
38
What is the insertion of the Abductor Pollicis Longus?
DA: Base of 1st metacarpal.
39
What is the action of the Abductor Pollicis Longus?
A: CMC abduction and extension of 1st digit.
40
What is the nerve supply of the Abductor Pollicis Longus?
N: Radial (posterior interosseous) (C7, C8).
41
What is the origin of the Extensor Pollicis Longus?
PA: Posterior surface of middle 1/3rd of ulna and interosseous membrane.
42
What is the insertion of the Extensor Pollicis Longus?
DA: Dorsal aspect of base of distal phalanx of 1st digit.
43
What is the action of the Extensor Pollicis Longus?
A: CMC, MP, IP extension of 1st digit.
44
What is the nerve supply of the Extensor Pollicis Longus?
N: Radial (posterior interosseous) (C7, C8).
45
What is the origin of the Extensor Pollicis Brevis?
PA: Posterior surface of distal 1/3rd of radius and interosseous membrane.
46
What is the insertion of the Extensor Pollicis Brevis?
DA: Dorsal aspect of base of proximal phalanx of 1st digit.
47
What is the action of the Extensor Pollicis Brevis?
A: CMC, MP extension of 1st digit.
48
What is the nerve supply of the Extensor Pollicis Brevis?
N: Radial (posterior interosseous) (C7, C8).
49
What is the PA of the Flexor Carpi Radialis?
Medial epicondyle (common flexor origin).
50
What is the DA of the Flexor Carpi Radialis?
Base of 2nd metacarpal. ## Footnote Netter also includes base of 3rd metacarpal as insertion (DA).
51
What is the action of the Flexor Carpi Radialis?
Wrist flexion, radial deviation.
52
What is the nerve supply for the Flexor Carpi Radialis?
Median (C6, C7).
53
What is the PA of the Abductor Pollicis Brevis?
Flexor retinaculum and tubercles of scaphoid and trapezium.
54
What is the DA of the Abductor Pollicis Brevis?
Lateral side of base of the proximal phalanx of 1st digit.
55
What is the action of the Abductor Pollicis Brevis?
CMC abduction and opposition of 1st digit.
56
What is the nerve supply for the Abductor Pollicis Brevis?
Median (recurrent branch) (C8, T1).
57
What is the PA of the Dorsal Interossei (1-4)?
Adjacent sides of 2 metacarpals. (bipennate)
58
What is the DA of the Dorsal Interossei (1-4)?
Base of proximal phalanx and extensor expansions of digits 2-4.
59
What are the actions of the Dorsal Interossei (1-4)?
Abduction of digits 2, 3, 4 from axial line and assists lumbricals with MP flexion, PIP, DIP extension.
60
What is the PA of the Middle Deltoid?
Acromion.
61
What is the DA of the Middle Deltoid?
Deltoid tuberosity of humerus.
62
What is the nerve supply of the Middle Deltoid?
Axillary (C5, C6).
63
What is the action of the Middle Deltoid?
Abducts humerus.
64
What is the PA of the Posterior Deltoid?
Spine of scapula.
65
What is the DA of the Posterior Deltoid?
Deltoid tuberosity of humerus.
66
What is the nerve supply of the Posterior Deltoid?
Axillary (C5, C6).
67
What is the action of the Posterior Deltoid?
Extends, externally rotates humerus.
68
What is the PA of the Short head of Biceps Brachii?
Coracoid process.
69
What is the PA of the Long head of Biceps Brachii?
Supraglenoid tubercle and superior labrum.
70
What is the DA of Biceps Brachii?
Radial tuberosity and fascia of the forearm via bicipital aponeurosis.
71
What is the action of Biceps Brachii?
Forearm supination, elbow flexion, shoulder flexion.
72
What is the nerve supply of Biceps Brachii?
Musculocutaneous (C5, C6, C7).
73
What is the PA of the Long head of Triceps Brachii?
Infraglenoid tubercle.
74
What is the PA of the Lateral head of Triceps Brachii?
Posterior surface of the humerus superior to radial (spiral) groove.
75
What is the PA of the Medial head of Triceps Brachii?
Posterior surface of the humerus inferior to radial (spiral) groove.
76
What is the DA of Triceps Brachii?
Olecranon process and fascia of forearm.
77
What is the action of Triceps Brachii?
Elbow extension.
78
What is the nerve supply of Triceps Brachii?
Radial (C6, C7, C8).
79
What is the PA of Brachioradialis?
Proximal 2/3 of lateral supra-epicondylar ridge of humerus.
80
What is the DA of Brachioradialis?
Lateral surface of distal end of radius proximal to styloid process.
81
What is the action of Brachioradialis?
Elbow flexion (maximal in mid-pronated position).
82
What is the nerve supply of Brachioradialis?
Radial (C5, C6, C7).
83
What is the PA of Extensor Carpi Radialis Longus?
Lateral supra-epicondylar ridge of humerus.
84
What is the DA of Extensor Carpi Radialis Longus?
Dorsal aspect of base of 2nd metacarpal.
85
What is the action of Extensor Carpi Radialis Longus?
Wrist extension, radial deviation.
86
What is the nerve supply of Extensor Carpi Radialis Longus?
Radial (C6, C7).
87
What is the PA of Extensor Carpi Radialis Brevis?
Lateral epicondyle of humerus (common extensor origin).
88
What is the DA of Extensor Carpi Radialis Brevis?
Dorsal aspect of base of 3rd metacarpal.
89
What is the action of Extensor Carpi Radialis Brevis?
Wrist extension, radial deviation.
90
What is the nerve supply of Extensor Carpi Radialis Brevis?
Radial (deep branch) (C7, C8).
91
What is the PA of Extensor Hallucis Longus?
Middle surface of anterior fibula, and interosseous membrane.
92
What is the DA of Extensor Hallucis Longus?
Distal phalanx of hallux (1st digit).
93
What actions does Extensor Hallucis Longus perform?
MP and IP extension of hallux, ankle dorsiflexion.
94
What is the nerve supply of Extensor Hallucis Longus?
Deep fibular (L5, S1).
95
What is the PA of Fibularis Longus?
Head and superior lateral surface of fibula.
96
What is the DA of Fibularis Longus?
Base of 1st metatarsal, medial cuneiform.
97
What actions does Fibularis Longus perform?
Foot eversion, ankle plantarflexion (weak).
98
What is the nerve supply of Fibularis Longus?
Superficial fibular (L5, S1, S2).
99
What is the PA of Fibularis Brevis?
Inferior lateral surface of fibula.
100
What is the DA of Fibularis Brevis?
Tuberosity of base of 5' metatarsal.
101
What actions does Fibularis Brevis perform?
Foot eversion, ankle plantarflexion (weak).
102
What is the nerve supply of Fibularis Brevis?
Superficial fibular (L5, S1, S2).
103
What is the PA of Gastrocnemius?
Medial head: popliteal surface of femur superior to medial condyle. Lateral head: lateral femoral condyle.
104
What is the DA of Gastrocnemius?
Calcaneus via calcaneal tendon.
105
What actions does Gastrocnemius perform?
Ankle plantarflexion, knee flexion.
106
What is the nerve supply of Gastrocnemius?
Tibial (S1, S2).
107
What is the PA of Soleus?
Head and superior surface of posterior fibula, soleal line and medial border of tibia, tendinous arch between bony attachments.
108
What is the DA of Soleus?
Calcaneus via calcaneal tendon.
109
What actions does Soleus perform?
Ankle plantarflexion.
110
What is the nerve supply of Soleus?
Tibial (S1, S2).
111
What is the PA of Anterior Deltoid?
Lateral third of clavicle.
112
What is the DA of Anterior Deltoid?
Deltoid tuberosity of humerus.
113
What actions does Anterior Deltoid perform?
Flexes, internally rotates humerus.
114
What is the nerve supply of Anterior Deltoid?
Axillary (C5, C6).
115
Iliacus - SA
Iliac crest, Iliac fossa, ala of sacrum, and anterior sacroiliac ligaments.
116
Iliacus - IA
Lesser trochanter of femur (joins psoas major) and shaft inferior to it.
117
Iliacus - Action
Flexes hip.
118
Iliacus - Nerve
Femoral (L2, L3).
119
Gluteus Maximus - PA
Ilium posterior to posterior gluteal line, dorsal surface of sacrum and coccyx, and sacrotuberous ligament.
120
Gluteus Maximus - DA
ITB and gluteal tuberosity of femur.
121
Gluteus Maximus - Nerve
Inferior gluteal (L5, S1, S2).
122
Gluteus Maximus - Action
Extends and externally rotates hip.
123
Semitendinosus - PA
Ischial tuberosity.
124
Semitendinosus - DA
Superior surface of medial tibia (pes anserine).
125
Semitendinosus - Action
Hip extension, knee flexion and tibial internal rotation.
126
Semitendinosus - Nerve
Tibial (L5, S1, S2).
127
Semimembranosus - PA
Ischial tuberosity.
128
Semimembranosus - DA
Posterior surface of medial tibial condyle, medial meniscus, oblique popliteal ligament to lateral femoral condyle.
129
Semimembranosus - Action
Hip extension, knee flexion, tibial internal rotation. Retracts medial meniscus.
130
Semimembranosus - Nerve
Tibial (L5, S1, S2).
131
Biceps Femoris Long Head - PA
Ischial tuberosity.
132
Biceps Femoris Long Head - DA
Head of fibula.
133
Biceps Femoris Long Head - Action
Hip extension, knee flexion, tibial external rotation.
134
Biceps Femoris Long Head - Nerve
Tibial (L5, S1, S2).
135
Biceps Femoris Short Head - PA
Lateral lip of linea aspera, lateral supracondylar line.
136
Biceps Femoris Short Head - DA
Head of fibula.
137
Biceps Femoris Short Head - Action
Knee flexion, tibial external rotation.
138
Biceps Femoris Short Head - Nerve
Common fibular (L5, S1, S2).

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