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Muscles - Origin, Insertion & Action 2 > Muscles of the Shoulder > Flashcards

Muscles of the Shoulder Flashcards

1
Q

What is the technical name of the shoulder joint?

A

Glenohumeral joint

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2
Q

What are the actions of the shoulder joint?

A 
Flexion
Extension
Abduction
Adduction
Medial rotation
Lateral rotation
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3
Q

What is the name of the depression in the bone above the spine of the scapula?

A

Supraspinous fossa

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4
Q

What is the name of the depression in the bone below the spine of the scapula?

A

Infraspinous fossa

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5
Q

What is the name of the depression in the bone under the scapula?

A

Subscapular fossa

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6
Q

What is the name of the larger of the two bony protuberances on the humerus?

A

Greater tubercle of the humerus

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7
Q

What is the name of the upper edge of the scapula closest to the armpit?

A

Upper axillary border of the scapula

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8
Q

What is the insertion of the supraspinatus?

A

Greater tubercle of the humerus - superior facet

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9
Q

What is the origin of the supraspinatus?

A

Supraspinous fossa

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10
Q

What is the origin of the infraspinatus?

A

Infraspinous fossa

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11
Q

What is the insertion of the infraspinatus?

A

Greater tubercle of the humerus - middle facet

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12
Q

What is the origin of teres minor?

A

Axillary border of the scapula

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13
Q

What is the insertion of teres minor?

A

Greater tubercle of the humerus - inferior facet

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14
Q

What is the origin of subscapularis?

A

Subscapular fossa

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15
Q

What is the insertion of subscapularis?

A

Lesser tubercle of the humerus

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16
Q

What is the action of supraspinatus?

A

Initiate abduction of the humerus

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17
Q

What are the actions of both infraspinatus and teres minor?

A

Lateral rotation of the humerus

Assist in extension of the humerus

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18
Q

What is the action of subscapularis?

A

Medial rotation of the humerus

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19
Q

What is the important function of all four rotator cuff muscles?

A

Stabilization of the glenohumeral joint

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20
Q

What is the name of the portion of the collarbone closest to the midline of the body?

A

Medial clavicle

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21
Q

What is the anatomical name of the breast bone?

A

The sternum

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22
Q

What does the word pectoralis refer to?

A

“Breast”

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23
Q

What is the name of the groove at the top of the humerus that the biceps tendon passes through?

A

Bicipital groove

24
Q

What is the insertion of the pectoralis major?

A

Lateral lip of the bicipital groove

25
Q

What is the origin of the clavicular portion of pectoralis major?

A

Medial clavicle

26
Q

What is the origin of the sternal portion of pectoralis major?

A

Upper 6 ribs and the sternum

27
Q

What are the three main actions of pectoralis major?

A

Medial rotation of the humerus
Flexion of the glenohumeral joint
Horizontal flexion of the glenohumeral joint

28
Q

What is the name of the fusion of the five vertebrae sitting between the two sides of the pelvis?

A

Sacrum

29
Q

What is the name of the upper ridge of the larger flat bone of the pelvis?

A

Crest of the ilium

30
Q

What does the word latissimus mean?

A

“Wide”

31
Q

What is the name of the corner of the scapula that is farthest from the head?

A

Inferior angle of the scapula

32
Q

What is the name of the groove at the top of the humerus that the biceps tendon passes through?

A

Bicipital groove

33
Q

What is the insertion of the latissimus dorsi?

A

Bicipital Groove

34
Q

What vertebrae are part of the origin of latissimus dorsi?

A

T7 - L5

35
Q

What part of the scapula is included in the origin of the latissimus dorsi?

A

Inferior angle of the scapula

36
Q

What part of the pelvis is part of the origin of latissimus dorsi?

A

Crest of the ilium

37
Q

What are the actions of the humerus that the latissimus dorsi can do?

A

Medial rotation of the humerus at the glenohumeral joint
Extension of the humerus at the glenohumeral joint
Adduction of the humerus at the glenohumeral joint

38
Q

What action of the scapula can latissimus dorsi do?

A

Depression of the scapula

39
Q

What is the name of the corner of the scapula farthest from the head?

A

Inferior angle of the scapula

40
Q

What is the name of the depression at the top of the humerus where teres major attaches?

A

Bicipital groove

41
Q

What does the word teres mean?

A

“Rounded”

42
Q

What is the insertion of the teres major?

A

Bicipital Groove

43
Q

What is the origin of the teres major?

A

Inferior angle of the scapula

44
Q

What are the three actions of the teres major?

A

Medial rotation of the humerus at the glenohumeral joint
Adduction of the humerus at the glenohumeral joint
Extension of the humerus at the glenohumeral joint

45
Q

What is the anatomical name of the collarbone?

A

Clavicle

46
Q

What is the name of the projection of bone that comes off of the scapula?

A

Acromion process

47
Q

What is the name of the horizontal ridge along the scapula?

A

Spine of the scapula

48
Q

What is the name of the bump on the humerus where all three deltoids attach?

A

Deltoid tuberosity

49
Q

What does the name deltoid mean?

A

“Triangle”

50
Q

What is the insertion of the deltoids?

A

Deltoid tuberosity

51
Q

What is the origin of the anterior portion of the deltoids?

A

Lateral third of the clavicle

52
Q

What is the origin of the lateral portion of the deltoids?

A

Acromion process

53
Q

What is the origin of the posterior portion of the deltoids?

A

Spine of the scapula

54
Q

What action do all portions of the deltoids contribute to?

A

Abduction of the humerus at the glenohumeral joint

55
Q

What actions do only the anterior portion of the deltoids do?

A

Flexion of the humerus at the glenohumeral joint

Medial rotation of the humerus at the glenohumeral joint

56
Q

What actions do only the posterior portion of the deltoids do?

A

Extension of the humerus at the glenohumeral joint

Lateral rotation of the humerus at the glenohumeral joint

Muscles - Origin, Insertion & Action 2 (3 decks)

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