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Adele MSK > Anatomy - Upper Limb 2 > Flashcards

Anatomy - Upper Limb 2 Flashcards

1
Q

What is the nerve supply for serratus anterior?

A

Long thoracic nerve

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2
Q

What clinical sign is seen when the long thoracic nerve is injured?

A

Winged scapula

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3
Q

During what procedure is the long thoracic nerve commonly injured?

A

Mastectomy

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4
Q

What are the actions of the superior fibres of the trapezius on the scapula?

A

Elevation

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5
Q

What are the actions of the middle fibres of the trapezius on the scapula?

A

Retraction

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6
Q

What are the actions of the inferior fibres of the trapezius on the scapula?

A

Depression

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7
Q

What is the innervation of the trapezius muscle?

A

CNXI Accessory nerve

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8
Q

What are the actions of teres major on the shoulder joint?

A

Adduction and medial rotation of the humerus

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9
Q

What are the actions of latissimus dorsi on the shoulder joint?

A

Adduction, extension and internal rotation of the humerus

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10
Q

What are the two heads of the biceps brachii known as?

A

Short and long heads

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11
Q

Which head of the biceps arises from the coracoid process along with the coracobrachialis?

A

Short head

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12
Q

Which head of the biceps arises from the supraglenoid tubercle and runs in the bicipital groove of the humerus?

A

Long head

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13
Q

To which bony process of the radius is the tendon of biceps attached distally?

A

Radial tuberosity

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14
Q

What is the action of biceps on both the shoulder and elbow joints?

A

Flexion

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15
Q

What is the action of biceps on the superior radio-ulnar joint?

A

Supination

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16
Q

What is the nerve supply to the biceps muscle?

A

Musculocutaneous nerve

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17
Q

Which segmental fibres (cervical segments) mainly innervate the biceps brachii muscle?

A

C5-7 - but mainly C6

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18
Q

From which cord of the brachial plexus does the musculocutaneous nerve arise?

A

Lateral cord

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19
Q

What are the origin and insertion of coracobrachialis?

A

Tip of the coracoid process to the medial margin of the humerus around the middle

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20
Q

What is the action of coracobrachialis on the shoulder joint?

A

Draws the humerus forwards - shoulder flexion

Draws the humerus towards the torso - shoulder adduction

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21
Q

What is the nerve supply of coracobrachialis?

A

Musculocutaneous nerve

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22
Q

What is the main action of brachialis on the elbow joint?

A

Flexion

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23
Q

Which nerve supplies the brachialis muscle?

A

Musculocutaneous nerve

24
Q

What is the segmental or root value of the musculocutaneous nerve?

A

C5-7

25
Q

What are the three muscles supplied by the musculocutaneous nerve?

A

Biceps brachii
Brachialis
Coracobrachialis

26
Q

Where does the brachial artery begin?

A

Lower border of teres major

27
Q

Does the median nerve supply any muscles in the arm?

A

No

28
Q

Does the musculocutaneous nerve supply any muscles in the forearm or hand?

A

No

29
Q

Does the ulnar nerve innervate any muscles in the arm?

A

No

30
Q

Which artery is responsible for the pulsation felt in the cubital fossa?

A

Brachial

31
Q

The olecranon process and coronoid process are parts of which bone?

A

Ulna

32
Q

Which head of the triceps has its proximal attachment on the infraglenoid tubercle of the scapula?

A

Long head

33
Q

What is the main action of the triceps on the elbow joint?

A

Extension

34
Q

What is the action of the anconeus muscle on the elbow joint?

A

Extension

35
Q

What is the nerve supply to the triceps and the anconeus?

A

Radial nerve

36
Q

What is the root value of the radial nerve?

A

C7 and 8

37
Q

Which branch of the brachial artery accompanies the radial nerve in the radial groove?

A

Deep brachial

38
Q

What is the characteristic clinical sign of a radial nerve injury?

A

Wrist drop

39
Q

Which ligament holds the head of the radius in place?

A

Annular ligament

40
Q

What are the three flexors of the elbow joint?

A

Brachialis
Biceps brachii
Brachioradialis

41
Q

What are the two extensors of the elbow joint?

A

Triceps brachii

Anconeus

42
Q

What are the two main supinators?

A

Supinator

Biceps brachii

43
Q

What are the two main pronators?

A

Pronator teres

Pronator quadratus

44
Q

Which muscle is the most powerful supinator?

A

Biceps brachii

45
Q

Which muscle is the most powerful pronator?

A

Pronator quadratus

46
Q

What are the actions of serratus anterior?

A

Protracts and rotates the scapula

47
Q

What is the innervation of the deltoid muscle?

A

Axillary nerve

48
Q

Which nerve is most likely to be fractured at the radial groove?

A

Radial nerve

49
Q

What are the actions of teres major?

A

Adduction and medial rotation of the arm

50
Q

What is the innervation of biceps brachii?

A

Musculocutaneous nerve

51
Q

Which cord of the brachial plexus does the musculocutaneous nerve come from?

A

Lateral

52
Q

What is the function of the coracoacromial ligament?

A

Prevent upper displacement of the humeral head

53
Q

Which type of joint is the superior radio-ulnar?

A

Synovial pivot

54
Q

Which nerve innervates the supinator?

A

Radial nerve

55
Q

What are the functions of the glenoid labrum?

A

Deepens the glenoid cavity and provides shock absorption

Adele MSK (22 decks)

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