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HAE > Shoulder Muscles > Flashcards

Shoulder Muscles Flashcards

0
Q

Deltoid insertion

A

Deltoid tuberosity of humeru

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1
Q

Deltoid origin

A

Spine of scapula, acromion, lateral 1/3 of clavicle

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2
Q

Deltoid innervation

A

Axillary nerve

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3
Q

Deltoid action

A

Abducts arm
Anterior fibers flex arm
Posterior fibers extend arm

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4
Q

Supraspinatus origin

A

Supraspinous fossa

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5
Q

Supraspinatous insertion

A

Greater tubercle of humerus (superior)

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6
Q

Supraspinatous innervation

A

Suprascapular nerve

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7
Q

Supraspinatous action

A

Abducts arm

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8
Q

Infraspinatus origin

A

Infraspinous fossa

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9
Q

Infraspinatous insertion

A

Greater tubercle of humerus (middle)

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10
Q

Infraspinatus innervation

A

Suprascapular nerve

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11
Q

Infraspinatus action

A

Laterally rotates arm

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12
Q

Teres minor origin

A

Lateral border of scapula (upper half)

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13
Q

Teres minor insertion

A

Greater tubercle of humerus (inferior)

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14
Q

Teres minor innervation

A

Axillary nerve

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15
Q

Teres minor action

A

Lateral rotation of arm

16
Q

Teres major origin

A

Lateral border of scapula (inferior half and inferior angle)

17
Q

Teres major insertion

A

Anterior side of humerus (medial lip of intertubercular groove)

18
Q

Teres major action

A

Extends and medially rotates arm

19
Q

Subscapularis origin

A

Subscapular fossa

20
Q

Subscapularis insertion

A

Lesser tubercle of humerus

21
Q

Subscapularis innervation

A

Upper and lower subscapular nerves

22
Q

Subscapularis action

A

Adducts and medially rotates arm

23
Q

Pectoralis major origin

A

Clavicular head: medial 1/3 of clavicle

Sternocostal head: sternum and adjacent costal cartilage

24
Q

Pectoralis major insertion

A

Anterior side of humerus (lateral lip of intertubercular groove)

25
Q

Pectoralis major innervation

A

Medial and lateral pectoral nerves

26
Q

Pectoralis major action

A

Flexes, adducts, medially rotates arm

27
Q

Pectoralis minor origin

A

Ribs 3-5

28
Q

Pectoralis minor insertion

A

Coracoid process of scapula

29
Q

Pectoralis minor innervation

A

Medial pectoral nerve

30
Q

Pectoralis minor action

A

Depresses scapula

Assists with protraction

31
Q

Serratus anterior origin

A

Upper ribs (1-8)

32
Q

Serratus anterior insertion

A

Medial border of the scapula (anterior side)

33
Q

Serratus anterior innervation

A

Long thoracic nerve

34
Q

Serratus anterior action

A

Protracts and laterally rotates scapula

35
Q

Teres major innervation

A

Lower subscapular nerve

HAE (5 decks)

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