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Anatomy- Cadaver Lab > Shoulder, Arm, Brachial Plexus > Flashcards

Shoulder, Arm, Brachial Plexus Flashcards

1
Q

Supraspinatus Origin

A

supraspinous fossa of scapula

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2
Q

Supraspinatus Insertion

A

greater tubercle of humerus

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3
Q

Supraspinatus Action

A

abduction of humerus, first 0-10o

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4
Q

Supraspinatus Innervation

A

suprascapular n.

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5
Q

Supraspinatus Blood supply

A

suprascapular a.

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6
Q

Infraspinatus Origin

A

infraspinous fossa of scapula

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7
Q

Infraspinatus Insertion

A

greater tubercle of humerus (just posterior to supraspinatus)

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8
Q

Infraspinatus Action

A

lateral rotation of humerus

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9
Q

Infraspinatus Innervation

A

suprascapular n.

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10
Q

Infraspinatus Blood supply

A

suprascapular a and circumflex scapular a.

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11
Q

Teres Minor Origin

A

upper 2/3 of lateral (axillary) border of scapula

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12
Q

Teres Minor Insertion

A

greater tubercle of humerus (posterior and inferior to infraspinatus)

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13
Q

Teres Minor Action

A

lateral rotation of humerus

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14
Q

Teres Minor Innervation

A

axillary n.

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15
Q

Teres Minor Blood supply

A

subscapular a and circumflex scapular a.

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16
Q

Subscapularis Origin

A

subscapular fossa of scapula

17
Q

Subscapularis Insertion

A

lesser tubercle of humerus

18
Q

Subscapularis Action

A

medial rotation of humerus

19
Q

Subscapularis Innervation

A

upper and lower subscapular n.

20
Q

Subscapularis Blood supply

A

subscapular a.

21
Q

Teres Major Origin

A

inferior angle of scapula

22
Q

Teres Major Insertion

A

lesser tubercle of humerus

23
Q

Teres Major Action

A

extension of humerus, adduction of humerus

24
Q

Teres Major Innervation

A

lower subscapular n

25
Q

Teres Major Blood supply

A

subscapular a., circumflex scapular a.

26
Q

Triceps brachii Origin

A

infraglenoid tubercle of scapula (long head); posterolateral surface of humerus above radial groove (lateral head);
posteromedial surface of humerus below radial groove (medial head)

27
Q

Triceps brachii Insertion

A

olecranon process of ulna

28
Q

Triceps brachii Action

A

extension of forearm (all heads) extension of humerus (long head) adduction of humerus (long head)

29
Q

Triceps brachii Innervation

A

Radial n.

30
Q

Triceps brachii Blood supply

A

deep brachial and posterior circumflex humeral a.

Anatomy- Cadaver Lab (6 decks)

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