Scapula/Humeral Muscles & Pec Region Flashcards

1
Q

3 Origin for Trapezius

A

External Occipital Protuberance
Superior Nuchal Line
Spinous Processes of C7-T12

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2
Q

3 Insertion of Trapezius

A

Acromion Process
Spine of Scapula
Lateral 1/3 of the Clavicle

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3
Q

What is the innervation of trapezius?

A

Spinal accessory nerve CN XI

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4
Q

What are the actions for trapezius?

A
  • Upward rotation of the scapula
  • Upper fibers elevate scapula
  • Middle fibers retract scapula
  • Lower fibers depress scapula
  • Neck extension
  • Ipsi-lateral side bending of the neck
  • Contra-lateral rotation of the neck
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5
Q

5 Origins for latissimus dorsi

A
Iliac Crest
Thoracolumbar Fascia
Inferior angle of the scapula
Lower 3-4 ribs
All the lumbar and sacral spinous processes
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6
Q

What is the insertion of latissimus dorsi?

A

Floor of the intertubercular groove (bicipital groove)

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7
Q

What is the innervation for latissimus dorsi?

A

Thoracodorsal nerve, C6-C8

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8
Q

What are the actions for latissimus dorsi?

A

Shoulder extension, adduction, and internal rotation

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9
Q

2 Origin of levator scapula

A

posterior tubercles, transverse processes of C1-C4

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10
Q

Insertion of levator scapula

A

Superior angle of scapula

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11
Q

Innervation of Levator Scapula

A

Dorsal scapular nerve C5

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12
Q

What are 4 actions for levator scapula?

A

Scapular elevation
Scapular downward rotation
Ipsi-lateral sidebending
Rotation of the neck

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13
Q

What is the origin of Rhomboids?

A

Spinous processess C7-T5

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14
Q

Insertion of Rhomboids?

A

Medial scapular border

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15
Q

Innervation of Rhomboids

A

Dorsal Scapular nerve C5

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16
Q

Actions of Rhomboids?

A

Scapular retraction and downward rotation

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17
Q

3 Origin of deltoid?

A

Scapular Spine
Acromion Process
Lateral 1/3 of Clavicle

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18
Q

Insertion of deltoid?

A

Deltoid Tuberosity (Humerus)

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19
Q

Innervation of Deltoid?

A

Axillary nerve C5-6

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20
Q

Actions of Deltoid?

A

Shoulder Abduction
Anterior fibers flex and internally rotate
Posterior fibers extend
Externally rotate

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21
Q

Origin of Supraspinatus?

A

Supraspinous fossa

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22
Q

Insertion of supraspinatus?

A

Superior facet greater tubercle of humerus

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23
Q

Innervation of supraspinatus?

A

Suprascapular nerve C5-6

24
Q

Action of supraspinatus?

A

Shoulder abduction

25
Origin of infraspinatus?
Infraspinous fossa
26
Insertion of infraspinatus?
Middle facet greater tubercle of humerus
27
Innervation of infraspinatus?
Suprascapular nerve C5-6
28
Action of infraspinatus?
External rotation of shoulder
29
What is the origin of Tres Minor?
Lateral Border of Scapula
30
What is the insertion of Tres Minor?
Inferior facet greater tubercle of humerus
31
What is the innervation of Tres Minor?
Axillary nerve C5-6
32
What is the action of Tres Minor?
External rotation of shoulder
33
What is the origin of Subscapularis?
Subscapular fossa
34
What is the insertion of Subscapularis?
Lesser tubercle of humerus
35
What is the innervation of Subscapularis?
Upper and lower subscapular nerve C6-8
36
What is the action of Subscapularis?
Internal rotation of humerus
37
What is the origin of Tres Major?
Inferior angle of scapula
38
What is the insertion of Tres Major?
Medial lip of intertubercular groove of humerus
39
What is the innervation of Tres Major?
Lower subscapular nerve C6-8
40
What are the actions of Tres Major?
Internal rotation | Adduction of the shoulder
41
Origin for Pectoralis Major
Clavicular Head: Anterior aspect of the clavicle Sternocostal Head: Anterior aspect of the sternum and the superior 6 costal cartilages Abdominal Head: Aponeurosis of external oblique
42
Insertion of Pectoralis Major
Lateral lip of the intertubercular groove of humerus
43
Innervation for Pectoralis Major
Medial and lateral pectoral nerve C6-8
44
Action for Pectoralis Major
Clavicular Head: Shoulder Flexion Sternocostal Head: Should Extension Abdominal Head: Horizontal Adduction
45
Origin for Pectoralis Minor:
Ribs 3-5
46
Insertion for Pectoralis Minor
Coracoid Process
47
Innervation for Pectoralis Minor
Medial Pectoral nerve C8-T1
48
Action for Pectoralis Minor
Scapula tipping, downward rotation, Protraction
49
Origin for Serratus Anterior
Ribs 1-8
50
Insertion for Serratus Anterior
Medial order of the scapula
51
Innervation for Serratus Anterior:
Long Thoarcic Nerve C5-7
52
Action for Serratus Anterior:
Scapular Protractiom upward rotation
53
Subclavius Origin:
1st Rib
54
Insertion for Subclavius
Inferior aspect of middle clavicle
55
Innervation for subclavius
Nerve to subclavius C5-6
56
Action for Subclavius
Aid in respiration, prevent lateral displacment of the clavicle