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Anatomy > Shoulder And Arm Muscles > Flashcards

Shoulder And Arm Muscles Flashcards

(80 cards)

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1
Q

Origin for trapezius

A

Superior nuchal line, external occipital protuberance, nuchal ligament, spinous processes C7-T12

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2
Q

Insertion for trapezius

A

Lateral clavicle, acromion process, scapular spine

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3
Q

Nerve for trapezius

A

Spinal accessory nerve (CN XI)

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4
Q

Action for trapezius

A

Upper part: elevates scapula;
Middle part: retracts scapula;
Lower part: depresses scapula

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5
Q

Origin for Latissumus dorsi

A

Spinous processes T7-T12, thoracolumbar fascia, iliac crest, inferior 4 ribs

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6
Q

Insertion for Latissumus dorsi

A

Floor of intertubercular groove

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7
Q

Nerve for Latissumus dorsi

A

Thoracodorsal nerve

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8
Q

Action for Latissumus dorsi

A

Extends, internally rotates, adducts shoulder

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9
Q

Origin for deltoid (anterior, lateral, posterior parts)

A

Anterior part: lateral 1/3 clavicle;
Lateral part: acromion process;
Posterior part: scapular spine

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10
Q

Insertion for deltoid (anterior, lateral, posterior parts)

A

Deltoid tuberosity

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11
Q

Nerve for deltoid (anterior, lateral, posterior parts)

A

Axillary nerve

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12
Q

Action for deltoid (anterior, lateral, posterior parts)

A

Anterior part: flexes and internally rotates shoulder;
Lateral part: abduct shoulder;
Posterior part: extends and externally rotates shoulder

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13
Q

Origin for rhomboid minor

A

Spinous processes of C7-T1, nuchal ligament

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14
Q

Insertion for rhomboid minor

A

Medial border of scapular superior to scapular spine

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15
Q

Nerve for rhomboid minor

A

Dorsal scapular nerve

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16
Q

Action for rhomboid minor

A

Retract and elevate scapula, depress glenoid fossa

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17
Q

Origin for rhomboid major

A

Spinous processes of T2-T5

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18
Q

Insertion for rhomboid major

A

Medial border of scapula inferior to scapular spine

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19
Q

Nerve for rhomboid major

A

Dorsal scapular nerve

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20
Q

Action for rhomboid major

A

Retract and elevate scapular, depress glenoid fossa

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21
Q

Origin for levator scapulae

A

Transverse processes of C1-C4

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22
Q

Insertion for levator scapulae

A

Medial border of scapula inferior to superior angle

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23
Q

Nerve for levator scapulae

A

Dorsal scapular nerve

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24
Q

Action for levator scapulae

A

Elevates scapula

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25
Origin for pectoralis major
Clavicular head: medial 1/2 of clavicle Sternocostal head: sternum, costal cartilages 1-6
26
Insertion for pectoralis major
Lateral lip of intertubercular groove
27
Nerve for pectoralis major
Lateral and medial pectoral nerves
28
Action for pectoralis major
Abducts and internally rotates shoulder Clavicular head: flexes shoulder Sternocostal head: extends shoulder from flexed position
29
Origin for pectoralis minor
Ribs 3-5 near costal cartilages
30
Insertion for pectoralis minor
Corocoid process
31
Nerve for pectoralis minor
Medial pectoral nerve
32
Action for pectoralis minor
Stabilizes scapula against thoracic wall and depresses scapula
33
Origin for subclavius
1st rib and its costal cartilage
34
Insertion for subclavius
Inferior surface of clavicle
35
Nerve for subclavius
Subclavian nerve
36
Action for subclavius
Anchors clavicle to 1st rib and depresses clavicle
37
Origin for Serratus anterior
Lateral parts of ribs 1-8
38
Insertion for Serratus anterior
Anterior surface of medial scapular border
39
Nerve for Serratus anterior
Long thoracic nerve
40
Action for Serratus anterior
Protracts scapula
41
Origin for Subscapularis
Subscapular fossa
42
Insertion of the Subscapularis
Lesser tubercle of humerus
43
Nerve for Subscapularis
Upper and lower Subscapular nerves
44
Action of Subscapularis
Internally rotates shoulder
45
Origin of Supraspinatus
Supraspinous fossa
46
Insertion of Supraspinatus
Greater tubercle of humerus, posterior humerus
47
Nerve for Supraspinatus
Suprascapular nerve
48
Action for Supraspinatus
Initiates shoulder abduction
49
Origin for Infraspinatus
Infraspinous fossa
50
Insertion for Infraspinatus
Greater tubercle of humerus, posterior humerus
51
Nerve for Infraspinatus
Suprascapular nerve
52
Action for Infraspinatus
Externally rotates shoulder
53
Origin for Teres minor
Upper 2/3 of lateral scapula border
54
Insertion for Teres minor
Greater tubercle of humerus, posterior humerus
55
Nerve for Teres minor
Axillary nerve
56
Action for Teres minor
Externally rotates shoulder
57
Origin for Teres major
Posterior surface of inferior angle of scapula
58
Insertion for Teres major
Medial lip of intertubercular groove
59
Nerve for Teres major
Lower Subscapular nerve
60
Action for Teres major
Extends, adducts, and internally rotates shoulder
61
Origin for coracobrachialis
Coracoid process
62
Insertion for coracobrachialis
Medial mid-shaft humerus
63
Nerve for coracobrachialis
Musculocutaneous nerve
64
Action for coracobrachialis
Flexes and adducts shoulder
65
Origin for biceps brachii (long and short heads)
Long head: supraglenoid tubercle Short head: coracoid process
66
Insertion for biceps brachii (long and short heads)
Radial tuberosity, deep forearm fascia
67
Nerve for biceps brachii (long and short heads)
Musculocutaneous nerve
68
Action for biceps brachii (long and short heads)
Supinates forearm, flexes elbow, weakly flexes shoulder
69
Origin for brachialis
Distal 1/2 of anterior humerus
70
Insertion for brachialis
Ulnar tuberosity
71
Nerve for brachialis
Musculocutaneous nerve
72
Action for brachialis
Flexes elbow in all positions
73
Origin for triceps brachii (long, lateral, and short heads)
Long head: infraglenoid tubercle Medial and lateral heads: posterior humerus
74
Insertion for triceps brachii (long, lateral, and short heads)
Olecranon process
75
Nerve for triceps brachii (long, lateral, and short heads)
Radial nerve
76
Action for triceps brachii (long, lateral, and short heads)
Extends elbow; long head assists with extension and adduction of shoulder
77
Origin of anconeus
Lateral epicondyle
78
Insertion for anconeus
Lateral olecranon process
79
Nerve for anconeus
Radial nerve
80
Action for anconeus
Weakly extends elbow

Anatomy (8 decks)

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