Shoulder Joint Muscle OIAN Flashcards

0
Q

Middle Deltoid

A

O: Acromion Process
I: Deltoid tuberosity
A: Shoulder Abduction
N: Axillary Nerve: C5, C6

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1
Q

Anterior Deltoid

A

O: Lateral 3rd of the clavicle
I: Deltoid tuberosity
A: shoulder abduction, flexion, medial rotation, horizontal addiction
N: Axillary Nerve C5-C6

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2
Q

Posterior Deltoid

A

O: Spine of Scapula
I: Deltoid tuberosity
A: Shoulder abduction, extension, hyperextension, lateral rotation, horizontal abduction
N: Axillary Nerve: C5, C6

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3
Q

Pectoralis Major Clavicular Portion

A

O: Medial 3rd of clavicle
I: Lateral lip of bicipital groove
A: Shoulder flexion (60*), shoulder adduction, medial rotation, horizontal adduction
N: Lateral & Medial Pectoral Nerve: C5-T1

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4
Q

Pectoralis Major Sternal Portion

A

O: Sternum, Costal cartilage of 1st 6 Ribs
I: Later lip of bicipital groove
A: Shoulder extension (60*), shoulder adduction, medial rotation, horizontal adduction
N: Lateral and Medial Pectoral Nerve: C5-T1

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5
Q

Latissimus Dorsi

A

O: Spinous process of T7-L5 (via dorsolumbar fascia) posterior surface of sacrum, iliac crest, & lower 3 ribs
I: Medial floor of bicipital groove
A: Shoulder ext, adduction, medial rotation, hyperextension
N: Thoracodorsal Nerve: C6-C8

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6
Q

Teres Major

A

O: Axillary border of scapula near inferior angle
I: Crest below lesser tubercle inferior to Lat’s attachment
A: Shoulder extension, adduction, medial rotation
N: Lower Subscapular Nerve: C5-C7

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7
Q

Supraspinatus

A

O: Supraspinous fossa
I: Greater tubercle
A: Shoulder abduction
N: Suprascapular Nerve: C5, C6

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8
Q

Infraspinatus

A

O: Infrspinous fossa
I: Greater tubercle
A: Shoulder lateral rotation, Horizontal abduction
N: Suprascapular Nerve: C5, C6

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9
Q

Teres Minor

A

O: Axillary border
I: Greater tubercle
A: Shoulder lateral rotation, Horizontal abduction
N: Axillary Nerve: C5, C6

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10
Q

Subscapularis

A

O: Subscapular fossa
I: Lesser tubercle
A: Shoulder medial rotation
N: Upper & Lower Subscapular Nerve: C5, C6

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11
Q

Coracobrachialis

A

O: Coracoid Process
I: Medial surface of humerus near midpoint
A: Stabilizes shoulder jt. assist w/ flex. and add.
N: Musculocutaneous: C6, C7

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