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CM MSK Anatomy > Shoulder > Flashcards

Shoulder Flashcards

1
Q

Name the rotator cuff muscles

A

Supraspinatus
Infraspinatus
Teres minor
Subscapularis

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2
Q

Name the intrinsic shoulder muscles

A

Deltoid

Teres major

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3
Q

Name the remaining shoulder muscles

A

Serratus anterior

Subclavius

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4
Q

What is the nerve innervation of the supraspinatus and infraspinatus?

A

Suprascapular nerve

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5
Q

What is the arterial supply to the supraspinatus and infraspinatus?

A

Suprascapular artery

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6
Q

What nerve innervates teres minor?

A

Axillary nerve

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7
Q

What artery supplies teres minor?

A

Circumflex artery

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8
Q

What nerve supplies the subscapularis?

A

Upper and lower subscapular nerves

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9
Q

What arteries supplies the subscapularis?

A

Subscapular lateral artery

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10
Q

Supraspinatus

A

Initiates arm abduction

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11
Q

Infraspinatus

A

Lateral rotation of arm

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12
Q

Teres minor

A

Lateral rotation of arm

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13
Q

Subscapularis

A

Medially rotates arm at shoulder and adducts it, helps hold humeral head in glenoid cavity

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14
Q

Attachments of supraspinatus

A

Supraspinatus fossa of scapula to superior facet of greater tubercle of humerus

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15
Q

Attachment of infraspinatus

A

Infraspinatus fossa of scapula to middle facet of greater tubercle of humerus

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16
Q

Attachment of teres minor

A

Upper 2/3 of posterior surface of lateral border of scapula to inferior facet of greater tubercle of the humerus

17
Q

Attachment of subscapularis

A

Subscapular fossa to lesser tubercle of humerus

18
Q

What nerve innervates the deltoid?

A

Axillary nerve

19
Q

What artery supplies the deltoid?

A

Posterior circumflex humeral artery, deltoid branch of thorao-acromial artery

20
Q

Deltoid

A

Clavicular - flexes and medially rotates arm
Acromial - abducts arm beyond initial 15 degrees
Spinal - extends and laterally rotates arm

21
Q

Attachments of the deltoid

A

Lateral third of anterior clavicle, lateral acromion, inferior edge of spine of scapula to deltoid tuberosity of humerus

22
Q

What nerve innervates the teres major?

A

Lower sub scapular nerve

23
Q

What artery supplies teres majorr?

A

Circumflex scapular artery

24
Q

Teres major

A

Adducts and medially rotates arm

25
Q

Attachments of teres major

A

Posterior surface of interior angle of scapula to medial lip of intertubercular sulcus of humerus

26
Q

What nerve innervates the subclavius?

A

Nerve to subclavian

27
Q

What artery supplies the subclavius?

A

Clavicular branch of thoraco - acromial artery

28
Q

Subclavius

A

Anchors and depresses clavicle

29
Q

Attachments of subclavius

A

Upper border of 1st rib and cartilage to inferior surface of middle third of clavicle

CM MSK Anatomy (10 decks)

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