Lecture 6: Muscles Of The Shoulder Girlde And Arm Flashcards

1
Q

Innervation of the Trapezius Muscle

A

Accessory Nerve (CN XI) and Cervical Nerves C3 and C4

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2
Q

Actions of Superior Fibers of the Trapezius

A

Elevates, rotates scapula superiorly
Extends head and neck
Contra lateral rotation of head and neck
IpsiLateral flexion of head and neck

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3
Q

Action of middle fibers of trapezius

A

Retracts scapula

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4
Q

Action of inferior fibers of trapezius

A

Depresses scapula
Superior rotation of scapula

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5
Q

Origin of Trapezius

A

Medial 1/3 of superior nuchal line
EOP (inion)
Ligamentum nuchae
Spinous Processes C7-T12

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6
Q

Insertion of Trapezius

A

Lateral 1/3 of clavicle
Acromion process
Spine of scapula

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7
Q

Origin of Superior Fibers of Trapezius

A

External Occipital Protruberance
Superior Nuchal Line
Nuchal ligament

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8
Q

Insertion of Superior Fibers of Trapezius

A

Post aspect of lateral 1/3 of clavicle
Acromion

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9
Q

Other name for superior fibers of Trapezius Muscle

A

Descending part of Trapezius

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10
Q

Origin of Middle Fibers of Trapezius

A

SP C7-T5

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11
Q

Insertion of Middle Fibers of Trapezius

A

Acromion
Lateral end of spine of scapula

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12
Q

Other name for Middle Fibers of trapezius

A

Transverse Part of Trapezius Muscle

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13
Q

Other name for Inferior Fibers of Trapezius

A

Ascending part of Trapezius

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14
Q

Origin for Inferior Part of Trapezius

A

SP T6–T12

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15
Q

Insertion for Inferior Fibers of Trapezius

A

Medial End of Spine of Scapula

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16
Q

Origin of Latissimus Dorsi

A
  1. SP T7-S5 via thoracolumbar fascia
  2. Post Iliac Crest
  3. Ribs 10-12
  4. Inferior angle of the scapula
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17
Q

Insertion of Latissimus Dorsi

A
  1. Medial lip of intertubecular groove
  2. Floor of bicipital groove of the humerus
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18
Q

Innervation of Latissimus Dorsi

A

Thoracodorsal nerve
(C6, 7, 8)

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19
Q

Action of Latissimus Dorsi

A

Extends, adducts and internally rotates humerus
Assists with forced inspiration

20
Q

Origin of Levator Scapulae

A

Post tubercles of TVP’s C1-C4

21
Q

Insertion of Levator Scapulae

A

Medial border of scapula superior to spine - including superior angle

22
Q

Innervation of Levator Scapulae

A

Dorsal Scapular Nerve C5
Cervical Nerve C3-C4

23
Q

Action of Levator Scapulae

A

Elevates and inferiorly rotates scapula
Extension and lateral flexion of C spine (if scapula is fixed)

24
Q

Insertion of Rhomboideus Minor

A

Medial border of scapula including root and above

25
Q

Origin of Rhomboideus Major

A

SP T2-T5

26
Q

Insertion of Rhomboideus Major

A

Medial border of scapula below spine

27
Q

Origin of Rhomboideus Minor

A

SP of C7-T1

28
Q

Innervation of Rhomboid Major and Minor

A

Dorsal Scapular nerve C5

29
Q

Actions of Rhomboids Major and Minor

A
  1. Retraction,
  2. elevation and
  3. inferior rotation of scapulae
30
Q

Deltoid origin

A

Lateral 1/3 of clavicle
Acromion process
Inferior border of spine of scapula

31
Q

Insertion of Deltoid

A

Deltoid tuberosity of humerus

32
Q

Innervation of Deltoid

A

Axillary Nerve (C5,6)

33
Q

Common movement of Deltoid Fibres

A

Abduction of GH joint

34
Q

Action of anterior fibres of Deltoid muscle

A

Flexion and medial rotation of humerus
Abduction at GH joint

35
Q

Action of posterior fibres of Deltoid muscle

A

Extends and laterally rotates humerus

36
Q

Origin of Teres Major

A

Lower 1/3 of lateral border of scapula going across inferior angle to medial border (tip not included).

37
Q

Insertion of Teres Major

A

Medial lip of intertubercular sulcus of humerus
(Crest of lesser tubercle)

38
Q

Innervation of Teres Major

A

Lower subscapular nerve (C5,6)

39
Q

Action of Teres Major

A

Adducts and medially rotates humerus

40
Q

Name muscles originating on coracoid process

A

Coracobracialis
Short head of biceps brachii

41
Q

Muscles that inserts on coracoid process

A

Pectoralis Minor

42
Q

Muscles that internally rotate shoulder

A

Latissimus Dorsi
Anterior fibres of Deltoid
Subscapularis
Pectoralis Major
Teres Major

43
Q

Muscles that laterally rotates shoulder

A

Infrspinatous
Teres Minor
Post fibres of Deltoid

44
Q

Muscles responsible for flexion of GH joint

A

Anterior fibers of Deltoid
Pectoralis Major
Coracobracialis
Biceps Brachii

45
Q

Muscles responsible for superior rotation of scapula

A

Trapezius
Serratus anterior

46
Q

Muscles responsible for inferior rotation of scapula

A

Levator scapulae
Rhomboid Minor
Rhomboid Major

47
Q

Adduction of GH joint

A

Latissimus Dorsi
Teres Major
Pectoralis Major
Coracobrachialis