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Upper Limb 1 > Muscles Of Shoulder And Pectoral Region > Flashcards

Muscles Of Shoulder And Pectoral Region Flashcards

1
Q

Insertion of Superior fibres of Trapezius

A

Lateral 1/3rd of clavicle and acromion

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2
Q

Innervation of Superior fibres of Trapezius

A

Accessory Nerve (CN11)

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3
Q

Function of Superior fibres of Trapezius

A

Elevate Scapula

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4
Q

Origin of Middle fibres of Trapezius

A

Spinous processes of T1-T5

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5
Q

Insertion of Middle fibres of Trapezius

A

Superior border of spine of scapula (lateral 2/3rds)

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6
Q

Innervation of Middle fibres of Trapezius

A

Accessory Nerve (CN11)

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7
Q

Function of Middle fibres of Trapezius

A

Retract Scapula

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8
Q

Origin of lower fibres of Trapezius

A

Spinous processes of T6-T12

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9
Q

Insertion of lower fibres of Trapezius

A

Medial 1/3rds of spine of scapula

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10
Q

Innervation of lower fibres of Trapezius

A

Accessory Nerve (CN11)

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11
Q

Function of lower fibres of Trapezius

A

Depresses scapula

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12
Q

Origin of levator scapulae

A

Transverse processes of C1-C4

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13
Q

Insertion of levator scapulae

A

Medial border of scapula superior to root of spine

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14
Q

Innervation to levator scapulae

A

Dorsal scapula nerve (C5)

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15
Q

Function of levator scapulae

A 
Elevate scapula
Rotate medially (downwards)
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16
Q

Origin of Superior fibres of Trapezius

A

Superior Nuchal Line
External Occipital Protuberance
Ligamentum Nuchae
Spinous Process of C7

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17
Q

Origin of Rhomboid major

A

Spinous processes of T2-T5

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18
Q

Insertion of Rhomboid major

A

Medial border of scapula Inferior to level of spine

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19
Q

Innervation of Rhomboid major

A

Dorsal Scapular Nerve (C5)

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20
Q

Function of Rhomboid major

A

Retract scapula medially

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21
Q

Origin of Rhomboid minor

A

Spinous processes of C7-T1

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22
Q

Insertion of Rhomboid minor

A

Medial border of spine at level of scapula

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23
Q

Innervation of Rhomboid minor

A

Dorsal Scapular Nerve (C5)

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24
Q

Function of Rhomboid minor

A

Retract the scapula medially and superior

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25
Origin of serratus anterior
Ribs 1-8
26
Insertion of serratus anterior
Medial border of scapula
27
Innervation of serratus anterior
Long Thoracic Nerve (C5-C7)
28
Function of serratus anterior
Protracts scapula | Rotates scapula inferiorly
29
What is winged scapula?
Damage to long thoracic nerve Lies superior to serratus anterior Medial and inferior border of scapula pull away
30
Origin of Pectoralis major
Sternal Head - anterior surface of sternum - costal cartilages 1-7 - sternal end of 6th rib - aponeurosis of external oblique Clavicular Head - anterior surface of medial half of clavicle
31
Insertion of Pectoralis major
Lateral lip of intertubecular groove of humerus
32
Innervation of Pectoralis major
Sternal Head - medial pectoral nerve (C8-T1) Clavicular Head - lateral pectoral nerve (C5-C7)
33
Function of Pectoralis major
``` Flexion Adduction Medial rotation of arm Flexion of extended arm ( clavicular head) Extension of flexed arm ( sternal head ) ```
34
Origin of Pectoralis minor
Anterior surfaces of sternal ends of ribs 3-5
35
Insertion of Pectoralis minor
Coracoid process of scapula
36
Innervation of Pectoralis minor
Medial pectoral nerve (C8-T1)
37
Function of Pectoralis minor
Draws scapula forward and downwards
38
Origin of subclavius
First rib at junction between rib and costal cartilage
39
Insertion of subclavius
Subclavian groove on inferior surface of clavicle
40
Innervation of subclavius
Subclavian nerve (C5-C6)
41
Function of subclavius
Pulls tip of shoulder down | Stabilises sternoclavicular joint
42
Origin of latissimus dorsi
``` Spinous processes of T7-L5 Iliac crest of sacrum Thoracolumbar fascia Inferior angle of scapula Lower 3-4 ribs ```
43
Insertion of latissimus dorsi
Floor of intertubecular groove of humerus
44
Innervation of latissimus dorsi
Thoracodorsal nerve (C6-C8)
45
Functions of latissimus dorsi
Adducts the arm Medially rotates the arm Extends the arm
46
Painful arc syndrome
Calcified bursitis - typically develops in males >50 - pain during 50-130 degrees of abduction - subacromial bursa in contact with acromion
47
Name the rotator cuff muscles
Supraspinatus Infraspinatus Teres minor Subscapularis
48
Origin of supraspinatus
Supraspinous fossa of scapula
49
Insertion of supraspinatus
Superior facet of greater tubercle of humerus
50
Innervation of supraspinatus
Suprascapular nerve (C5-C6)
51
Function of supraspinatus
Initiates abduction of arm (first 15 degrees) | Stabilises glenohumeral joint
52
Origin of Infraspinatus
Infraspinous fossa of scapula
53
Insertion of Infraspinatus
Middle facet of greater tubercle of humerus
54
Innervation of infraspinatus
Suprascapular Nerve (C5-C6)
55
Function of infraspinatus
Lateral Rotator of humerus | Stabilises glenohumeral joint
56
Origin of Teres Minor
Middle part of lateral border of scapula
57
Insertion of Teres Minor
Inferior facet of greater tubercle of humerus
58
Innervation of Teres Minor
Axillary Nerve
59
Function of Teres Minor
Laterally rotates and adducts humerus | Stabilises glenohumeral joint
60
Origin of subscapularis
Subscapular Fossa
61
Insertion of subscapularis
Lesser tubercle of humerus
62
Innervation of subscapularis
Upper and lower subscapular nerves (C5-C6)
63
Function of subscapularis
Medial rotator and adductor of humerus
64
Origin of Teres Major
Inferior angle of scapula
65
Insertion of Teres Major
Medial Lip of intertubecular groove
66
Innervation of Teres Major
Lower subscapular nerve (C5-C6)
67
Function of Teres Major
Adducts and medially rotates humerus
68
What vessels wrap around the surgical neck of the humerus?
Axillary nerve | Posterior Circumflex humeral artery
69
Origin of Anterior fibres of Deltoid
Anterior surface of lateral clavicle
70
Insertion of Anterior fiberes of Deltoid
Deltoid Tuberosity
71
Innervation of Anterior fibres of Deltoid
Axillary Nerve (C5-C6)
72
Function of Anterior fibres of Deltoid
Flexes arm at shoulder | Medially rotates arm
73
Origin of Middle Fibres of Deltoid
Acromion process | Spine of scapula
74
Insertion of Middle fibres of Deltoid
Deltoid Tuberosity
75
Innervation of Middle fibres of Deltoid
Axillary Nerve (C5-C6)
76
Function of Middle fibres of Deltoid
Abducts the arm at the shoulder joint
77
Origin of Posterior fibres of Deltoid
Spine of scapula (medial to middle fibres)
78
Insertion of Posterior fibres of Deltoid
Deltoid Tuberosity of humerus
79
Innervation of Posterior fibres of Deltoid
Axillary Nerve (C5-C6)
80
Function of Posterior fibres of Deltoid
Laterally Rotates arm | Extends Arm
81
Describe abduction at shoulder joint..
Supraspinatus initiates abduction (first 10-15 degrees) | Deltoids then take over
82
Boundaries of Quadrangular Space
Lateral - Surgical Neck of Humerus Medial - Triceps Brachii Inferior - Teres Major Superior - Teres Minor
83
Contents of Quadrangular Space
Axillary Nerve | Posterior Circumflex Humeral Artery and Vein
84
Muscles responsible for Elevation of Pectoral Girdle
Trapezius (superior fibres) Levator Scapulae Rhomboid (major and minor)
85
Muscles responsible for Depression of Pectoral Girdle
``` Gravity Pectoralis Minor Trapezius (inferior) Latissimus Dorsi Pectoralis Major Serratus Anterior ```
86
Muscles responsible for Protraction of Pectoral Girdle
Pectoralis minor Serratus Anterior Pectoralis Major
87
Muscles responsible for Retraction of Pectoral Girdle
Rhomboid (major and minor) Latissimus Dorsi Trapezius (middle)
88
Muscles responsible for Upward (lateral) Rotation of Pectoral Girdle
Trapezius (superior) Trapezius (inferior) Serratus Anterior
89
Muscles responsible for Downward (medial) Rotation of Pectoral Girdle
``` Levator Scapulae Rhomboid (major and minor) Pectoralis major Latissimus Dorsi Pectoralis Minor ```
90
Origin of Coracobrachialis
Coracoid Process of scapula
91
Insertion of Coracobrachialis
Mid-medial surface of humerus
92
Innervation of Coracobrachialis
Musculocutaneous nerve (C5-7)
93
Action of Coracobrachialis
Flexes at shoulder joint | Adducts the arm at shoulder joint

Upper Limb 1 (2 decks)

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