Muscles of the Upper Limb - Posterior Shoulder and Rotator Cuff Flashcards Preview

Musculoskeletal Anatomy Diagrams Hard Version > Muscles of the Upper Limb - Posterior Shoulder and Rotator Cuff > Flashcards

Flashcards in Muscles of the Upper Limb - Posterior Shoulder and Rotator Cuff Deck (50)
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1
Q

Name nerve A

A

A - Dorsal scapular nerve

2
Q

Name muscle A

A

A - Trapezius

3
Q

What is the function of muscle A?

A
  1. Abductor of arm (beyond initial 15º achieved by supraspinatus)
  2. Flexion of arm (clavicular fibres)
  3. Extension of arm (posterior fibres)

A - Deltoid

4
Q

What is the function of muscle A?

A

Lateral rotation of arm (at glenohumeral joint)

A - Teres minor

N.b the teres minor is a rotator cuff muscle

5
Q

What are the origin and insertion sites for muscle A?

A

Origin - Spinous processes of T2-T5 and associated supraspinous ligaments

Insertion - Posterior surface of medial border of scapula (from root of spine to inferior angle of scapula)

A - Rhomboid major

6
Q

Name muscle A

A

A - Infraspinatus

7
Q

Name muscle A

A

A - Trapezius

8
Q

Name muscle A

A

A - Teres major

9
Q

Name muscle A

A

A - Levator scapulae

10
Q

Name muscle A

A

A - Levator scapulae

11
Q

What is the function of muscle A?

A
  1. Medial rotation of arm (at glenohumeral joint)
  2. Extension of arm (at glenohumeral joint)

A - Teres major

12
Q

What is the innervation of muscle A?

A

Axillary nerve (C5 and C6)

A - Deltoid

13
Q

What is the function of muscle A?

A
  1. Extension of forearm (at elbow joint)
  2. Abduction of arm (at glenohumeral joint)
  3. Extension of arm (at glenohumeral joint)

A - Long head of triceps brachii

14
Q

What is the innervation of muscles A and B?

A

Dorsal scapular nerve (C5 and C6)

A - Rhomboid minor

B - Rhomboid major

15
Q

What are the spaces A, B and C?

A

A - Triangular space

B - Quadrangular space

C - Trianglular interval

16
Q

What are the origin and insertion sites for muscle A?

A

Origin - Upper 2/3rds of flattened strip of bone on posterior surface of scapula (immediately adjacent to lateral border of scapula

Insertion - Greater tubercle of humerus (Inferior facet on posterior surface)

A - Teres minor

17
Q

Name nerve A

A

A - Accessory nerve (XI)

18
Q

What are the origin and insertion sites for muscle A?

A

Origin - Transverse processes of C1 and C2 and posterior tubercles of transverse processes of C3 and C4

Insertion - Posterior surface of medial border of scapula (from superior angle to root of spine of scapula)

A - Levator scapulae

19
Q

Name muscles A and B

A

A - Rhomboid minor

B - Rhomboid minor

20
Q

What is the innervation of muscle A?

A

Accessory nerve (XI) - Motor

Anterior rami of C3 and C4 - Sensory

A - Trapezius

21
Q

Name nerve A

A

A - Axillary nerve

22
Q

What is the function of muscle A?

A

Initiation of abduction of arm to 15º (at glenohumeral joint)

A - Supraspinatus

N.b the supraspinatus is a rotator cuff muscle

23
Q

What is the function of muscle A?

A

Elevation of scapula

A - Levator scapulae

24
Q

Name muscles A to D

A

A - Infraspinatus

B - Supraspinatus

C - Subscapularis

D - Teres minor

25
Q

Name muscle A

A

A - Teres minor

26
Q

Name muscle A

A

A - Trapezius

27
Q

What is the innervation of muscle A?

A

Inferior subscapular nerve (C5, C6 and C7)

A - Teres major

28
Q

What is the function of muscle A?

A
  1. Elevation scapula
  2. Retraction of scapula

A - Rhomboid minor

29
Q

Name muscle A

A

A - Long head of triceps brachii

30
Q

What are the origin and insertion sites for muscle A?

A

Origin - Infraspinous fossa of scapula (medial 2/3rds) and deep fascia covering the muscle

Insertion - Greater tubercle of humerus (middle facet on posterior surface)

A - Infraspinatus

31
Q

What are the origin and insertion sites for muscle A?

A

Origin - Posterior surface of inferior angle of scapula (elongate oval area)

Insertion - Intertubercular sulcus of the greater tubercle of the humerus (medial lip)

A - Teres major

32
Q

Name muscle A

A

A - Trapezius

33
Q

What is the innervation of muscle A?

A

Axillary nerve

A - Teres minor

34
Q

What is the function of muscle A?

A
  1. Elevation of scapula
  2. Retraction of scapula

A - Rhomboid major

35
Q

What is the function of muscle A?

A
  1. Elevator of scapula
  2. Rotator of scapula (during abduction of humerus above horizontal)
  3. Retraction of scapula (middle fibres)
  4. Depress scapula (lower fibres)

A - Trapezius

36
Q

Name muscles A and B

A

A - Rhomboid minor

B - Rhomboid major

37
Q

Name muscles A and B

A

A - Levator scapulae

B - Trapezius

38
Q

What is the innervation of muscle A?

A

Radial nerve (C6, C7 and C8)

A - Long head of triceps brachii

39
Q

What is the function of muscle A?

A

Lateral rotation of arm (at glenohumeral joint)

A - Infraspinatus

N.b the infraspinatus is a rotator cuff muscle

40
Q

What is the innervation of muscle A?

A

Suprascapular nerve (C5 and C6)

A - Supraspinatus

41
Q

Name muscle A

A

A - Deltoid

42
Q

What are the origin and insertion sites for muscle A?

A

Origin - Infragenoid tubercle on scapula

Insertion - Olecranon process of ulna

A - Long head of triceps brachii

43
Q

What are the origin and insertion sites for muscle A?

A

Origin - Lower end of ligamentum nuchae and spinous processes of C7 and T1

Insertion - Posterior surface of medial border of scapula (at root of spine of scapula)

A - Rhomboid minor

44
Q

What is the innervation of muscle A?

A

Suprascapular nerve (C5 and C6)

A - Infraspinatus

45
Q

What are the origin and insertion sites for muscle A?

A

Origin - Supraspinous fossa of scapula (medial 2/3rds) and deep fascia covering the muscle

Insertion - Greater tubercle of humerus (most superior facet)

A - Supraspinatus

46
Q

Name muscle A

A

A - Deltoid

47
Q

What are the origin and insertion sites for muscle A?

A

Origin - Crest of the spine of scapula (inferior edge), acromion (lateral margin), anterior border of lateral 1/3rd of clavicle

Insertion - Deltoid tuberosity of humerus

A - Deltoid

48
Q

What is the innervation of muscle A?

A

Anterior rami of C3 and C4

Braches of dorsal scapular nerve

49
Q

Name muscle A

A

A - Supraspinatus

50
Q

What are the origin and insertion sites for muscle A?

A

Origin - Superior nuchal line, external occipital protuberance, ligamentum nuchae (medial margin), spinous processes C7-T12 and related supraspinous ligaments

Insertion - Crest of the spine of the scapula, acromion, posterior border of lateral 1/3rd of clavicle

A - Trapezius