Shoulder and Back Muscles Flashcards

1
Q

Innervation of Pectaloris Major

A

Lateral and Medial Pectoral Nerve

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2
Q

Innervation of Pectoralis Minor

A

Medial Pectoral

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3
Q

Innervation of subclavius

A

Subclavian Nerve

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4
Q

Innervatiin of Serratus Anterior

A

Long thoracic nerve

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5
Q

Innervation of Trapezius

A

Spinal Accessory Nerve XI (Motor Fibres)

C3 & C4 Spinal Nerves (Sensory Nerves)

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6
Q

Innervation of Latissimus Dorsi

A

Thoracodorsal Nerve

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7
Q

Innervation of Levatator Scapulae

A

Dorsal Scapular Nerve

Cervical Nerve

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8
Q

Innervation of Rhomboid Minor

A

Dorsal Scapular Nerve

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9
Q

Innervation of Rhomboid Major

A

Dorsal Scapular Nerve

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10
Q

Innervation of Deltoid

A

Axillary Nerve

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11
Q

Innervation of Deltoid

A

Axillary Nerve

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12
Q

Innervation of Supraspinatus

A

Suprascapular Nerve

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13
Q

Innervation of Infraspinatus

A

Suprascapular Nerve

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14
Q

Innervation of Teres Minor

A

Axillary Nerve

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15
Q

Innervation of Teres Major

A

Lower Subscapular Nerve

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16
Q

Innervation of Subscapularis

A

Upper Subscapular Nerve

Lower Subscapular Nerve

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17
Q

Action of Pectaloris Minor

A

Stabilises Scapula

Draws it anteriorly and inferiorly

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18
Q

Action of Subclavius

A

Anchors Clavicle

Depresses Clavicle

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19
Q

Action of Serratus Anterior

A

Draws Scapular Anteriorly and holds it against thoracic wall

Rotates scapula

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20
Q

Action of trapezius

A
Depresses Scapular (ascending Fibres)
Elevates Scapula (descending fibres)
Retracts scapular (all parts)
Rotates Glenoid cavitiy superiorly
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21
Q

Action of levatotor scapulae

A

Elevates scapula

Rotates glenoid cavity inferiorly

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22
Q

Action of rhomboids

A

Retracts scapular and fixes to thoracic wall

Rotates glenoid cavity inferiorly

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23
Q

Insertion of pectaloris major

A

Lateral lip of intertubercular sulcus of humerus

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24
Q

Insertion of pectoris Minor

A

Medial and Superior surfaces of coracoid process of scapula

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25
Q

Insertion of subclavius

A

Inferior middle part of clavicle (subclavian groove)

26
Q

Insertion of serratus Anterior

A

Anterior surface of medial border of scapula

27
Q

Insertion of Trapezius

A

Lateral third of clavicle
Acromion of scapula
Spine of scalula

28
Q

Insertion of Latissimus Dorsi

A

Floor of intertubercular sulcus of Humerus

29
Q

Insertion of levatotor scapulae

A

Medial Border of scapular superior to scapular spine

30
Q

Insertion of Rhomboid Minor

A

Smooth triagular area at medial side of scapular spine

31
Q

Insertion of Rhomboid Major

A

Medial border of scapular between scapular spine and inferior angle

32
Q

Insertion of deltoid

A

Deltoid tuberosity of humerus

33
Q

Insertion of supraspinatus

A

Superior facet of greater tubercle of humerus

34
Q

Insertion of infraspinatus

A

Middle facet of greater tubercle of humerus

35
Q

Insertion of teres minor

A

Inferior facet of greater tubercle of Humerus

36
Q

Insertion of teres Major

A

Medial lip of intertubercular sulcus of humerus

37
Q

Insertion of subscapularis

A

Lesser tubercle of humerus

38
Q

Origin of pectaloris major

A

Clavicular head:
Anterior surface of medial part of clavicle

Sternocostal Head
Anterior surface of sternum
Superior six costal cartilages
Aponeurosis of External oblique muscles

39
Q

Origin of pectaloris minor

A

3rd to 5th costal cartilages

40
Q

Origin of subclavius

A

Junction of 1st rib and its costal cartilage

41
Q

Origin of serratus anterior

A

External surfaces of later parts of 1st to 8th ribs

42
Q

Origin of trapezius

A

Medial third of superior nuchal Line (occiputal bone)
External occiputal proterberance
Nuchal ligament
Spinous processes of C7 to T12 vertebrae

43
Q

Origin of Latissimus Dorsi

A

Spinous process of inferior 6 vertebrae (T7-T12)
Iliac (Hip Bone) crest
Thoracolumbar Fascia
Inferior 3/4 ribs

44
Q

Origin of levatotor scapulae

A

posterior tubercles of transverse processes of C1 to C4

45
Q

Origin of Rhomboid Minor

A

Nuchal Ligament

Spinous processes of C7 to T1

46
Q

Origin of Rhomboid Major

A

Spinous processes of T2 to T5 vertebrae

47
Q

Origin of deltoid

A

Lateral third of clavicle
Acromion of scapula
Spine of scapula

48
Q

Origin of supraspinatus

A

Supraspinous fossa of scapula

49
Q

Origin of infraspinatus

A

Infraspinous fossa of scapula

50
Q

Origin of teres Minor

A

Middle part of later border of scapula

51
Q

Origin of teres Major

A

posterior part of interior angle of scapula

52
Q

Origin of subscapularis

A

Subscapular Fossa (most anterior surface)

53
Q

Which muscles constitute the superficial layer of muscles on the back

A

Trapezius
Deltoid
Lat. Dorsi

54
Q

Which muscles constitute the deep layer of muscles on the back

A

Rhomboid Major
Rhomboid Minor
Levatator Scapulae
Muscles around scapula

55
Q

What are the muscles that cause Abduction at the glenohumeral joint

A

Deltoid and supraspinatus

56
Q

What are the muscles tat cause adduction at the glenohumeral joint

A

Pec. major and Lat. dorsi

57
Q

What are the muscles that cause flexion at the glenohumeral joint

A

Pec. major and deltoid

58
Q

What are the muscles that cause extension at the glenohumeral joint

A

deltoid

59
Q

What are the muscles that cause medial rotation at the glenohumeral joint

A

subscapularis

60
Q

What are the muscles that cause lateral rotation at the glenohumeral joint

A

infraspinatus