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Anatomy > Upper Limb 2 - Anterior Arm, Neurovascular, Cubital Fossa, Posterior Arm & Elbow Joint > Flashcards

Upper Limb 2 - Anterior Arm, Neurovascular, Cubital Fossa, Posterior Arm & Elbow Joint Flashcards

1
Q

What are the 2 heads of the bicep brachii?

A

Long and Short

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2
Q

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

A

Short head

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3
Q

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

A

Long head

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4
Q

On which bony process of the radius does the tend of the biceps attach distally?

A

Radial Tuberosity

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5
Q

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

A

Flexion

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6
Q

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

A

It is a powerful supinator of the radio-ulnar joint

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7
Q

What is the nerve supply to the biceps brachii muscle?

A

Musculocutaneous muscle

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8
Q

Which spinal segment levels innervate the biceps brachii?

A

C5, C6, C7

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9
Q

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

A

Lateral cord

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10
Q

What is the action of coracobrachialis on the shoulder joint?

A

Flexion

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11
Q

What is the nerve supply of coracobrachialis?

A

Musculocutaneous nerve

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12
Q

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

A

Flexion

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13
Q

Which nerve innervates the brachialis muscle?

A

Musculocutaneous nerve

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14
Q

What are the 3 muscles supplied by the musculocutaneous nerve?

A

1 - Biceps Brachii

2- Coracobrachialis

3 - Brachialis

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15
Q

From which area of the arm does the musculocutaneous nerve start carrying cutaneous sensory nerves?

A

Distal to the biceps tendon within the cubital fossa

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16
Q

To which area of the arm does the musculocutaneous nerve supply sensory innervation?

A

Lateral aspect of the forearm

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17
Q

From which cords of the brachial plexus is the median nerved made up of?

A

Medial and lateral cords

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18
Q

Which group of muscles does the median nerve supply?

A
  • Flexor muscles in anterior forearm
  • Thenar muscle of hand
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19
Q

From which cord of the brachial plexus is the ulnar nerve formed?

A

Medial cord

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20
Q

Behind which bony prominence does the ulnar nerve travel?

A

Medial epicondyle

21
Q

Which muscles of the arm does the ulnar nerve innervate?

A

Muscles of hand (except Thenar muscles and 2 lateral lumbricals)

Flexor Carpi Ulnaris

Medial half of Flexor Digitorum Profundus

22
Q

Where is the most common site on the humerus where the radial nerve could be damaged?

A

Radial groove or mid-humeral shaft fracture

23
Q

Where is the most common site on the humerus where the ulnar nerve could be damaged?

A

Medial epicondyle

24
Q

Where is the most common site on the humerus where the axillary nerve could be damaged?

A

Surgical neck

25
Q

Which artery is easily palpable within the cubital fossa?

A

Brachial

26
Q

Which muscle forms the medial border of the cubital fossa?

A

Pronator Teres

27
Q

Which muscle forms the lateral border of the cubital fossa?

A

Brachioradialis

28
Q

What are the contents of the cubital fossa?

A

Brachial artery

Median cubital vein

Tendon of Biceps Brachii

Radial and Median Nerve

29
Q

Which vein within the cubital fossa is a common site of IV injections?

A

Medial cubital vein

30
Q

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

A

Ulna

31
Q

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

A

Long head

32
Q

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

A

Extension

33
Q

What is the nerve supply to the triceps muscle?

A

Radial nerve

34
Q

Which cord of the brachial plexus forms the radial nerve?

A

Posterior cord

35
Q

What are the main actions of the radial nerve?

A

Innervates all extensor muscle of the elbow and wrist joint

36
Q

Which artery of the arm is the radial nerve closely associated with

A

Profunda Brachii

37
Q

What is the segmental value of the radial nerve?

A

C5, C6, C7, C8, T1

38
Q

What is the characteristic clinical sign of radial nerve damage?

A

Wrist-drop

39
Q

What movements occur at the elbow joint?

A

Flexion and Extension

40
Q

Which ligament crosses over the head of the ulnar in a medio-lateral direction?

A

Annular ligament

41
Q

Which ligament of the elbow holds the head of the radius?

A

Radial collateral ligament

42
Q

What are the flexors of the elbow joint?

A

Biceps brachii

Brachialis

Brachioradialis

43
Q

Which muscles perform extension of the elbow joint?

A

Triceps brachii

Anconeus

44
Q

What are the movements that occur at the radio-ulnar joint?

A

Pronation

Supination

45
Q

What common injury can occur in young children at the radial head?

A

Pulled elbow or subluxation

46
Q

Which muscles of the forearm are involved in supination?

A

Supinator

Biceps Brachii

47
Q

Which muscles of the forearm are involved in pronation?

A

Pronator Teres

Pronator Quadratus

48
Q

Which muscle is the most powerful supinator of the forearm?

A

Biceps Brachii

49
Q

Which muscle is the most powerful pronator of the forearm?

A

Pronator Teres

Anatomy (26 decks)

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