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Muscles and Nerves > Shoulder > Flashcards

Shoulder Flashcards

1
Q

Supraspinatus
-Action
-Root, Trunk, Cord, Nerve

A

First 15 deg abduction
C5-C6, Upper Trunk, Suprascapular N

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2
Q

Deltoid
-Action
-Root, Trunk, Cord, Nerve

A

Remaining Abduction
Anterior - Flexion
Posterior - Extension, ER
C5-C6, Upper Trunk, Posterior Cord, Axillary N

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3
Q

Pectoralis Major
-Action
-Root, Trunk, Cord, Nerve

A

Shoulder adduction, Shoulder Flexion
C5-T1, All trunk, Medial and Lateral Cord, Medial and Lateral Pectoral Ns

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4
Q

Latissimus Dorsi
-Action
-Root, Trunk, Cord, Nerve

A

Shoulder adduction, shoulder extension, shoulder IR
C6, C7, C8, All trunk, posterior cord, thoracodorsal N

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5
Q

Teres Major
-Action
-Root, Trunk, Cord, Nerve

A

Whatever lat does (shoulder adduction, extension, IR)
C6-C6, all trunk, posterior cord, lower subscapular N

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6
Q

Biceps Brachii
-Action
-Root, Trunk, Cord, Nerve

A

Shoulder Flexion
C5-C6, Upper trunk, lateral cord, musculocutaneous N

Short head - coracoid process
Long head - supraglenoid tuberosity

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7
Q

Triceps
-Action
-Root, Trunk, Cord, Nerve

A

Shoulder Extension
C6, C7, C8, all three trunks, posterior cord, radial nerve

(Mostly long head, infraglenoid tuberosity)

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8
Q

Subscapularis
-Action
-Root, Trunk, Cord, Nerve

A

Shoulder Internal Rotation
C5-C6, posterior cord, upper and lower subsscapular nerves

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9
Q

Infraspinatus
-Action
-Root, Trunk, Cord, Nerve

A

Shoulder ER
C5-C6, upper trunk, suprascapular N

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10
Q

Teres minor
-Action
-Root, Trunk, Cord, Nerve

A

Shoulder ER
C5-C6, upper trunk, posterior cord, axillary N

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11
Q

Shoulder Abductors

A

Supraspinatus (first 15 deg)
Deltoid (remainder)

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12
Q

Shoulder Adductors

A

Pectoralis Major
Latissimus Dorsi
Teres Major

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13
Q

Shoulder Flexors

A

Biceps Brachii
Anterior Deltoid
Pec Major

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14
Q

Shoulder Extendors

A

Triceps
Posterior Deltoid
Lat Dorsi
Teres Major

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15
Q

Shoulder IR

A

Subcapularis
Lat Dorsi
Teres Major

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16
Q

Shoulder ER

A

Infraspinatus
Teres Minor
Posterior Deltoid

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