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Muscle Origin, Insertion, Attachment > Upper Body-Shoulder and Arm > Flashcards

Upper Body-Shoulder and Arm Flashcards

1
Q

Deltoid Origin

A

Lateral 1/3 of clavicle, acromion, spine of scapula

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2
Q

Deltoid Insertion

A

Deltoid Tuberosity

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3
Q

Deltoid Actions

A

All fibers: Abduct
Anterior fibers: Flex, medially rotate, horizontally adduct the G/H joint
Posterior fibers: Extend, Laterally Rotate, Horizontally Abduct

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4
Q

Trapezius Origin

A

EOP, medial portion of superior nuchal line, ligamentum nuchae, SP of C7 to T12

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5
Q

Trapezius Insertion

A

Lateral 1/3 of clavicle, acromion, spine of scapula

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6
Q

Trapezius Actions

A

Extend head and neck
Unilateral: Lateral flexion of to head to same side
Rotation of head/neck to opposite side
Elevate scapula
Upward rotation of scapula
Middle: Adduct scapula (retraction), Stabilize scapula
Lower: Depress scapula, Upward rotation of scapula

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7
Q

Supraspinatus Origin

A

Supraspinus fossa

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8
Q

Supraspinatus Insertion

A

Greater tubercle of humerus

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9
Q

Supraspinatus Action

A 
Abduct shoulder (G/H joint)
Stabilize head of humerus
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10
Q

Infraspinatus Origin

A

Infraspinous fossa

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11
Q

Infraspinatus Insertion

A

Greater tubercle of humerus

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12
Q

Infraspinatus Action

A

Laterally rotate shoulder, Adduct shoulder

Stabilize head of humerus

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13
Q

Teres Minor Origin

A

Upper 2/3 of lateral border of scapula

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14
Q

Teres Minor Insertion

A

Greater tubercle of humerus

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15
Q

Teres Minor Action

A

Laterally rotate, Adduct, and Stabilize G/H joint

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16
Q

Subscapularis Origin

A

Subscapular fossa

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17
Q

Subscapularis Insertion

A

Lesser tubercle of humerus

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18
Q

Subscapularis Action

A

Medially rotate, stabilize G/H joint (shoulder)

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19
Q

Latissimus Dorsi Origin

A

Inferior angle of scapula, SP of T7-T12, Last 3-4 ribs
Thoracolumbar aponeurosis
Posterior Iliac crest

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20
Q

Latissimus Dorsi Insertion

A

Intertubercular groove of humerus

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21
Q

Latissimus Dorsi Actions

A

Extend, Adduct, Medially rotate shoulder

22
Q

Teres Major Origin

A

Inferior angle of scapula and lower 1/3 of lateral border of scapula

23
Q

Teres Major Insertion

A

Crest of lesser tubercle of humerus

24
Q

Teres Major Action

A

Extend, Adduct, medially rotate shoulder

25
Q

Rhomboid Major Origin

A

SP of T2-T5

26
Q

Rhomboid Major Insertion

A

Medial border of the scapula between the spine of the scapula and inferior angle

27
Q

Rhomboid Major Action

A

Adduct scapula (retracts)
Elevate scapula
Downwardly rotate scapula

28
Q

Rhomboid Minor Origin

A

SP of C7 and T1

29
Q

Rhomboid Minor Insertion

A

Upper portion of medial border of the scapula, across from the spine of the scapula

30
Q

Rhomboid Minor Action

A

Adduct scapula
Elevate scapula
Downwardly rotate scapula

31
Q

Levator Scapula Origin

A

TP of C1-C4

32
Q

Levator Scapula Insertion

A

Medial border of scapula, between superior angle and superior portion of spine of scapula

33
Q

Levator Scapula Action

A 
Unilaterally:
Elevate scapula
Downwardly rotates scapula
Laterally flex the head and neck
Rotates the head and neck to same side
Bilaterally: Extends the head and neck
34
Q

Serratus Anterior Origin

A

External surfaces of upper eight or nine ribs

35
Q

Serratus Anterior Insertion

A

Anterior surface of medial border of scapula

36
Q

Serratus Anterior Action

A

Origin fixed:
Abducts scapula, Upwardly rotates scapula, Depresses scapula, Holds medial border of scapula against the rib cage
Scapula fixed:
Elevates thorax during forced inhalation

37
Q

Pectoralis Major Origin

A

Medial half of the clavicle, sternum, and cartilage of Ribs 1-6

38
Q

Pectoralis Major Insertion

A

Crest of greater tubercle of humerus

39
Q

Pectoralis Major Actions

A

All fibers: Adduct, Medially rotate shoulder, Elevates thorax during forced inhalation
Upper fibers: Flex shoulder, Horizontally adduct shoulder
Lower fibers: Extend shoulder

40
Q

Pectoralis Minor Origin

A

Ribs 3,4,5

41
Q

Pectoralis Minor Insertion

A

Medial surface of coracoid process of the scapula

42
Q

Pectoralis Minor Action

A

Depress scapula, Abduct scapula, Downwardly rotate scapula

With scapula fixed: helps elevate thorax during forced inhalation

43
Q

Biceps Brachii Origin

A

Short head: Coracoid process of scapula

Long head: Supraglenoid tubercle of scapula

44
Q

Biceps Brachii Insertion

A

Tuberosity of the radius and aponeurosis of the biceps brachii

45
Q

Biceps brachii actions

A

Flex elbow, supinate forearm, flex shoulder

46
Q

Triceps Brachii Origin

A

Long head: Infraglenoid tubercle of the scapula
Lateral head: Posterior surface of proximal half of humerus
Medial head: Posterior surface of distal half of humerus

47
Q

Triceps Brachii Insertion

A

Olecranon process of ulna

48
Q

Triceps Brachii Actions

A

All heads: Extend the elbow
Long head: Extends the shoulder
Adducts shoulder

49
Q

Coracobrachialis Origin

A

Coracoid process of the scapula

50
Q

Coracobrachialis Insertion

A

Medial surface of mid-humeral shaft

51
Q

Coracobrachialis Actions

A

Flex the shoulder

Adduct the shoulder

Muscle Origin, Insertion, Attachment (6 decks)

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