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Anatomy > 17. Pectoral Girdle and Shoulder > Flashcards

17. Pectoral Girdle and Shoulder Flashcards

1
Q

Name some important bony features of the scapula (9)

Make sure you can identify them

A 
Coracoid process
Acromion
Spine
Superior angle
Inferior angle
Glenoid cavity
Subscapular fossa
Infraspinatus fossa
Supraspinatus fossa
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2
Q

Make sure you know the origins and attachments of muscles onto the scapula, humerus and clavicle

A

Lecture slide 4, 5, 6

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3
Q

Name some important bony features of the humerus (7)

A 
Greater tubercle
Lesser tubercle
Bicipital groove 
Surgical neck
Anatomical neck
Deltoid tuberosity 
Head
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4
Q

Origin of pec major?

A

Clavicle
Costal cartilage ribs 1-6
Sternum

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5
Q

Insertion of pec major?

A

Outer lip of bicipital groove of humerus

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6
Q

Function of pec major?

A

Flexion and adduction of arm

Medial rotation of humerus

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7
Q

Innervation of pec major?

A

Medial (C8-T1) and lateral (C5-7) pectoral nerves

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8
Q

Origin of pec minor?

A

3/4/5th ribs

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9
Q

Insertion of pec minor?

A

Coracoid process of scapula

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10
Q

Function of pec minor?

A

Pulls shoulder anterior and inferior

Can also elevate ribs if the shoulder is fixed

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11
Q

Innervation of pec minor?

A

Medial pectoral nerve (C8, T1)

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12
Q

Origin of serratus anterior?

A

Outer surface upper 8 ribs

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13
Q

Insertion of serratus anterior?

A

Medial border of scapula

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14
Q

Function of serratus anterior?

A

Protraction of scapula

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15
Q

Innervation of serratus anterior?

A

Long thoracic nerve (C5-C7)

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16
Q

What are the 3 parts of trapezius?

A

Ascending part
Transverse part
Descending part

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17
Q

Origin of trapezius?

A

Superior nuchal line
Nuchal ligament
Spinous processes of C7-T12

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18
Q

Insertion of trapezius?

A

Lateral 1/3rd clavicle
Acromion
Spine of scapula

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19
Q

Function of ascending part of trapezius?

A

Depress scapula

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20
Q

Function of transverse part of trapezius?

A

Retracts scapula

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21
Q

Function of descending part of trapezius?

A

Elevate scapula

Rotate glenoid cavity

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22
Q

Inneration of trapezius?

A

Spinal accessory nerve - motor

C3, C4 - sensory

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23
Q

Origin of lat dorsi?

A

Ilium
Thoracolumbar fascia
Spinous process of lower 6 thoracic vertebrae

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24
Q

Insertion of lat dorsi?

A

Floor of bicipital groove of humerus

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25
Function of lat dorsi?
Extension Medial rotation Adduction of arm
26
Innervation of lat dorsi?
Thoracodorsal nerve C6-C8
27
Origin of levator scapulae?
Transverse processes of atlas and axis | 3/4th vertebrae
28
Insertion of levator scapulae?
Medial scapular border between superior angle and medial end of scapular spine
29
Function of levator scapulae?
Control scapula Elevate trapezius Can laterally flex neck if the shoulder is fixed
30
Innervation of levator scapulae?
Direct C3-C5 via dorsal scapular nerve
31
Origin of rhomboid major?
2-5 thoracic spines
32
Insertion rhomboid major?
Medial border of scapula, right from spine to inferior angle
33
Function of rhomboid major?
Retraction of scapula
34
Innervation of rhomboid major?
Dorsal scapular nerve C4-C5
35
Origin of rhomboid minor?
Nuchal ligament | C7
36
Insertion of rhomboid minor?
T1 thoracic spines | Medial end of spine of scapula
37
Function of rhomboid minor?
Retraction of scapula
38
Innervation of rhomboid minor?
Dorsal scapular nerve C4-C5
39
Origin of deltoid?
Lateral 1/3rd clavicle Acromion Spine of scapula
40
Insertion of deltoid?
Deltoid tuberosity of humerus
41
Function of deltoid?
Middle - arm abduction (from 10-110 degrees) Posterior - extension and lateral rotation Anterior - flexion and medial rotation
42
Innervation of deltoid?
Axillary nerve C5,C6
43
Origin of teres major?
Lateral border of scapula
44
Insertion of teres major?
Medial lip of bicipital groove of humerus
45
Function of teres major?
Adduction and medial rotation of the arm
46
Innervation of teres major?
Subscapular nerve C5-C6
47
Origin of subclavius?
Sternal end of 1st rib
48
Insertation of subclavius?
Middle 1/3rd of underside of clavicle
49
Function of subclavius?
Draws down and forwards during abduction
50
Innervation of subclavius?
Nerve to subclavius C5, C6
51
Name the rotator cuff muscles
Subscapularis Teres minor Supraspinatus Infraspinatus
52
Origin of subscapularis?
Subscapular fossa
53
Insertion of subscapularis?
Lesser tubercle of humerus
54
Function of subscapularis?
Medially rotate arm
55
Innervation of subscapularis?
Upper and lower subscapular nerves C5-C7
56
Origin of supraspinatus?
Supraspinatus fossa
57
Insertion of supraspinatus?
Greater tubercle of humerus
58
Function of supraspinatus?
Abducts arm first 10-15 degrees
59
Innervation of supraspinatus?
Suprascapular nerve C5-C6
60
Origin of infraspinatus?
Infraspinatus fossa of scapula
61
Insertion of infraspinatus?
Greater tubercle of humerus
62
Function of infraspinatus?
Lateral rotation of arm
63
Innervation of infraspinatus?
Suprascapular nerve
64
Origin of teres minor?
Upper 2/3rd lateral border of scapula
65
Insertion of teres minor?
Greater tubercle of humerus
66
Function of teres minor?
Lateral rotation of arm
67
Innervation of teres minor?
Axillary nerve C5-C6
68
MAKE SURE YOU CAN NAME AND LABEL ALL THE LIGAMENTS ASSOCIATED WITH THE SHOULDER JOINT
Glenohumeral (sup, middle and inf.) Coracohumeral Transverse humeral SLIDE 25
69
What is the function of the transverse humeral ligament?
Holds the biceps tendon in place
70
MAKE SURE YOU CAN NAME AND LABEL ALL THE LIGAMENTS ASSOCIATED WITH THE CLAVICLE
``` Acromioclavicular Corcacoacromial Conoid + Trapeziod = coracoclavicular Sternoclavicular Costoclavicular ``` SLIDE 26
71
What artery does the subclavian arise from?
RIGHT - bracheocephalic | LEFT - aortic arch
72
What are the branches of the subclavian artery? (5)
``` Dorsal scapular Costocervical trunk Internal thoracic Vertebral Thyrocervical trunk ```
73
Which neck of the humerus is most frequently fractured?
Surgical neck
74
What nerve and artery are at risk of damage in a fracture to the surgical neck of the humerus?
Axillary nerve | Posterior circumflex artery
75
What are the 2 anatomical 'spaces' found in the shoulder region?
Quadrangular | Triangular
76
What muscles make up the quadrangular space?
Long head of triceps Teres minor Teres major
77
What runs through the quadrangular space?
Axillary nerve | Posterior circumflex artery
78
What muscles make up the triangular space?
Teres major | Long head of triceps
79
What runs through the triangular space?
Radial nerve | Profunda brachii artery

Anatomy (49 decks)

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