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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
What is the origin of the clavicular portion of pectoralis major?
Medial clavicle
26
What is the origin of the sternal portion of pectoralis major?
Upper 6 ribs and the sternum
27
What are the three main actions of pectoralis major?
Medial rotation of the humerus Flexion of the glenohumeral joint Horizontal flexion of the glenohumeral joint
28
What is the name of the fusion of the five vertebrae sitting between the two sides of the pelvis?
Sacrum
29
What is the name of the upper ridge of the larger flat bone of the pelvis?
Crest of the ilium
30
What does the word latissimus mean?
"Wide"
31
What is the name of the corner of the scapula that is farthest from the head?
Inferior angle of the scapula
32
What is the name of the groove at the top of the humerus that the biceps tendon passes through?
Bicipital groove
33
What is the insertion of the latissimus dorsi?
Bicipital Groove
34
What vertebrae are part of the origin of latissimus dorsi?
T7 - L5
35
What part of the scapula is included in the origin of the latissimus dorsi?
Inferior angle of the scapula
36
What part of the pelvis is part of the origin of latissimus dorsi?
Crest of the ilium
37
What are the actions of the humerus that the latissimus dorsi can do?
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
What action of the scapula can latissimus dorsi do?
Depression of the scapula
39
What is the name of the corner of the scapula farthest from the head?
Inferior angle of the scapula
40
What is the name of the depression at the top of the humerus where teres major attaches?
Bicipital groove
41
What does the word teres mean?
"Rounded"
42
What is the insertion of the teres major?
Bicipital Groove
43
What is the origin of the teres major?
Inferior angle of the scapula
44
What are the three actions of the teres major?
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
What is the anatomical name of the collarbone?
Clavicle
46
What is the name of the projection of bone that comes off of the scapula?
Acromion process
47
What is the name of the horizontal ridge along the scapula?
Spine of the scapula
48
What is the name of the bump on the humerus where all three deltoids attach?
Deltoid tuberosity
49
What does the name deltoid mean?
"Triangle"
50
What is the insertion of the deltoids?
Deltoid tuberosity
51
What is the origin of the anterior portion of the deltoids?
Lateral third of the clavicle
52
What is the origin of the lateral portion of the deltoids?
Acromion process
53
What is the origin of the posterior portion of the deltoids?
Spine of the scapula
54
What action do all portions of the deltoids contribute to?
Abduction of the humerus at the glenohumeral joint
55
What actions do only the anterior portion of the deltoids do?
Flexion of the humerus at the glenohumeral joint | Medial rotation of the humerus at the glenohumeral joint
56
What actions do only the posterior portion of the deltoids do?
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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