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Fundamentals of Anatomy > Arm OIA > Flashcards

Arm OIA Flashcards

1
Q

Trapezius Origin

A

Occipital Bone (medial third of superior nuchal line), EOP, SPs C7-T12, Ligament. Nuchae

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2
Q

Trapezius Insertion

A

Lateral third of clavicle, acromion, spine of scapula

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3
Q

Trapezius Action

A

Upper: scapular elevation, ipsilateral side flexion of the cervical spine, contralateral rotation of the cervical spine, cervical spine extension
Middle: scapular retraction
Lower: scapular depression
Upper & Lower: upward rotation

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4
Q

Rhomboid Major Origin

A

SPs of T2-T5

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5
Q

Rhomboid Major Insertion

A

Medial border of scapula from just inferior to scapular spine to inferior angle

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6
Q

Rhomboid Major Action

A

Retracts and downward rotation of scapula, slightly elevates the scapula

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7
Q

Rhomboid Minor Orign

A

SPs of C7-T1

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8
Q

Rhomboid Minor Insertion

A

Superior part of medial border of scapula

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9
Q

Rhomboid Minor Action

A

Retracts and downwardly rotates the scapula, slightly elevates the scapula

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10
Q

Levator Scapula Origin

A

posterior tubercle of TPs C1-4

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11
Q

Levator Scapula Insertion

A

superior part of medial border of scapula

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12
Q

Levator Scapula Action

A

Elevates the scapula, downward rotation of scapula, ipsilateral side neck flexion, ipsilateral cervical rotation

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13
Q

Latissimus Dorsi Origin

A

SPs T6-T12, thoraco-lumbar fascia, iliac crest, inferior 3-4 ribs, inferior angle

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14
Q

Latissimus Dorsi Insertion

A

Floor of intertubercular sulcus of humerus

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15
Q

Latissimus Dorsi Action

A

Shoulder IR, ADD, EXT, HABD, scapular retraction, depression, downward rotation

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16
Q

Serratus Anterior Origin

A

External lateral margins of ribs 1-8 (or 1-9 or 1-10)

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17
Q

Serratus Anterior Insertion

A

Anterior surface of medial border of scapula

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18
Q

Serratus Anterior Action

A

scapular protraction, scapular depression, upward rotation of scapula, active during forced inspiration

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19
Q

Subclavius Origin

A

1st rib (junction between rib and its cartilage)

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20
Q

Subclavius Insertion

A

inferior surface of medial 3rd of clavicle at the subclavian groove

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21
Q

Subclavius Action

A

depresses clavicle, depresses scapular, protracts scapula

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22
Q

Pectoralis Minor Origin

A

Ribs 3-5 near costal cartilages

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23
Q

Pectoralis Minor Insertion

A

Coracoid process of scapula

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24
Q

Pectoralis Minor Action

A

raises ribs 3-5 during forced inspiration when scapula is fixed, protracts scapula, downward rotation of scapula, depresses scapula, stabilizes scapula

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25
Q

Pectoralis Major Origin

A

Clavicular Head: inferior medial half of clavicle
Sternocostal Head: anterior surface of sternum(body), 2-6 (or 1-6) costal cartilages

26
Q

Pectoralis Major Insertion

A

Crest of intertubercular sulcus (lateral lip of intertubercular groove) of humerus

27
Q

Pectoralis Major Action

A

Shoulder IR, ADD, HADD
Rotates scapula downward, protracts scapula, depresses scapula, when arm is flexed raises ribs during forced inspiration
Clavicular: FLX of shoulder from extended position
Sternocostal: EXT of shoulder from flexed position

28
Q

Deltoid Origin

A

Lateral third of clavicle, acromion, spine of scapula

29
Q

Deltoid Insertion

A

Deltoid tuberosity of humerus midway down on the lateral aspect of the humerus

30
Q

Deltoid Action

A

Anterior: FLX, HADD, IR, ABD
Middle: ABD (first 15 degrees)
Posterior: EXT, HABD, ER, ABD

31
Q

Supraspinatus Origin

A

Supraspinous Fossa of scapula

32
Q

Supraspinous Insertion

A

Superior Facet of greater tubercle of humerus

33
Q

Supraspinous Action

34
Q

Infraspinatus Origin

A

Infraspinous Fossa of scapula

35
Q

Infraspinatus Insertion

A

Middle Facet of greater tubercle of humerus

36
Q

Infraspinatus Action

A

ER, stabilizes head of humerus

37
Q

Teres Minor Origin

A

Middle part of lateral border of scapula

38
Q

Teres Minor Insertion

A

Inferior Facet of greater tubercle of humerus

39
Q

Teres Minor Action

A

ER, minor EXT, ADD, stabilizes head of humerus

40
Q

Teres Major Origin

A

Posterior surface of inferior angle of scapula

41
Q

Teres Major Insertion

A

Medial lip of intertubercular sulcus of humerus

42
Q

Teres Major Action

A

IR, ADD, EXT

43
Q

Subscapularis Origin

A

Subscapular Fossa of scapula

44
Q

Subscapularis Insertion

A

Lesser tubercle of humerus

45
Q

Subscapularis Action

A

stabilizes the head of humerus, shoulder IR, ADD of the shoulder

46
Q

Coracobrachialis Origin

A

tip of coracoid process

47
Q

Coracobrachialis Insertion

A

middle third of medial surface of humerus

48
Q

Coracobrachialis Action

A

FLX, ADD of the shoulder, resists dislocation of the shoulder

49
Q

Biceps Brachii Origin

A

Long Head: Supraglenoid Tubercle of scapula
Short Head: inferior lateral aspect of the coracoid process of the scapula

50
Q

Biceps Brachii Insertion

A

radial tuberosity and fascia of the forearm

51
Q

Biceps Brachii Action

A

Supination of forearm, FLX with in supinated position, barely operates when forearm is pronated, weak shoulder FLX

52
Q

Brachialis Origin

A

distal half of anterior surface of humerus

53
Q

Brachialis Insertion

A

coronoid process and ulnar tuberosity

54
Q

Brachialis Action

A

Main FLX of forearm (in all positions)

55
Q

Triceps Origin

A

Long Head: infraglenoid fossa of scapula
Lateral Head: posterior humerus, superior to radial groove
Medial Head: posterior humerus, inferior to radial groove

56
Q

Triceps Insertion

A

Proximal end of olecranon of ulna and fascia of forearm

57
Q

Triceps Action

A

Main EXT of the forearm, helps EXT and ADD shoulder

58
Q

Anconeus Origin

A

posterior surface of lateral epicondyle of humerus

59
Q

Anconeus Insertion

A

lateral olecranon and posterior superior ulna

60
Q

Anconeus Action

A

helps to EXT elbow

Fundamentals of Anatomy (17 decks)

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