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Anatomy > Upper limb - Arm > Flashcards

Upper limb - Arm Flashcards

1
Q

Where does the short head of the biceps brachii tendon insert?

A

Radial tuberosity of the radius

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2
Q

What joints do the biceps brachii act on?

A

Shoulder
Elbow
Radio-ulnar joints

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3
Q

Where does the short head of the biceps brachii arise?

A

Coracoid process

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4
Q

Where does the long head of the biceps brachii arise?

A

Supraglenoid tubercle of the scapula

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5
Q

What muscle arises with the short head of the biceps brachii?

A

Coracobrachialis

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6
Q

What is the action of the biceps brachii on the elbow joint?

A

Flexion

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7
Q

What is the action of the biceps brachii on the shoulder joint?

A

Flexion

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8
Q

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

A

Powerful supinator

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9
Q

What attaches to the greater tubercle of the humerus?

A

3 of the rotator cuff muscles
Supraspinatous
Infraspinatous
Teres minor

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10
Q

What runs along the intertubercular sulcus?

A

Tendon of the biceps brachii

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11
Q

What lies in the radial groove of the humerus?

A

Radial nerve

Profunda brachii artery

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12
Q

What attaches to the posterior aspect of the humeral shaft?

A

Medial head of triceps

Lateral head of triceps

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13
Q

What attaches the anterior aspect of the humeral shaft?

A

Coracobrachialis
Deltoid
Brachialis
Brachioradialis

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14
Q

What nerve innervates the biceps brachii?

A

Musculocutaneous nerve

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15
Q

What nerve segments are responsiple for the innervation of biceps brachii?

A

C5+6

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16
Q

What cord of the brachial plexus does the musculocutaneous nerve arise from?

A

Lateral

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17
Q

What is the insertion o the coracobrachialis?

A

Medial margin of the humerus in the midline

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18
Q

What is the innervation of the coracobrachialis?

A

musculocutaneous nerve

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19
Q

What are the actions of the coracobrachialis on the shoulder joint?

A

Flexion and adduction

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20
Q

Where does the brachialis arise?

A

Distal half of the humerus

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21
Q

Where does the brachialis insert?

A

Coronoid process of the ulnar

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22
Q

What are the acions of the brachialis?

A

Flexion of the ulnar

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23
Q

What is the innervation of the brachialis?

A

Musculocutaneous nerve

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24
Q

What is the nerve value of the musculocutaneous nerve?

A

C5-C7

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25
Q

Which nerve innervates the lateral compartment of the arm?

A

Musculocutaneous nerve

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26
Q

What three muscles are supplied by the musculocutaneous nerve?

A

Biceps brachii
Coracobrachialis
Brachialis

27
Q

Where does the musculocutaneous nerve provide sensation for?

A

Lateral part of the arm

28
Q

What two cords does the median nerve arise from?

A

Lateral and medial cords of the brachial plexus

29
Q

What muscles does the median nerve supply?

A

Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor digitorum superficialis

Thenar muscles
Lateral 2 lumbricals

30
Q

What muscles make up the anterior (flexor) compartment of the arm?

A

Biceps brachii
Coracobrachialis
Brachialis

31
Q

What is the arterial supply for the anterior compartment of the arm?

A

Muscular bracnhes of the brachial artery

32
Q

How does the musculocutaneous nerve enter the arm?

A

By perforating the coracobrachialis berfore descending between the biceps and brachialis

33
Q

What does the musculocutaneous nerve become?

A

Lateral cutaneous nerve of the forearm

34
Q

What muscles form the posterior (extensor) compartment of the arm?

A

Triceps brachii

Anconeus

35
Q

What is the arterial supply to the biceps brachii?

A

Profunda brachii artery

36
Q

What are the three triceps heads?

A

Long
Lateral
Medial

37
Q

Where does the medial head of the triceps brachii originate?

A

Inferior to the radial groove on the humerus

38
Q

Where does the Lateral Head of the Triceps Brachii originate?

A

Superior to the radial groove on the humerus

39
Q

Where does the Long Head of the Triceps Brachii originate?

A

Infraglenoid tubercle

40
Q

Where does the converged triceps tendon attach?

A

Olecranon of ulna

41
Q

What is the action of the triceps brachii?

A

Extension of elbow

42
Q

What is the innervation of the triceps brachii?

A

Radial nerve

43
Q

What is the innervation of the anconeus?

A

Radial nerve

44
Q

What is the characterisitc sign of a radial nerve injury?

A

Wrist drop

45
Q

What are the three common sites where the three arm nerves can be damaged due to fractures?

A

Radial nerve - radial groove
Ulnar nerve - medial epicondyle
Axillary nerve - surgical neck

46
Q

What artery is found in the cubital fossa?

A

Brachial artery

47
Q

What forms the base of the cubital fossa?

A

An imaginary line between the two epicondyles

48
Q

What forms the medial border of the cubital fossa?

A

Pronator teres

49
Q

What forms the lateral border of the cubital fossa?

A

brachioradialis

50
Q

What are the contents of the cubital fossa?

A

Radial nerve (deep branch) (under brachioradialis)
Median nerve
Biceps tendon
Brachial artery

51
Q

What are the segemntal root values for the radial nerve?

52
Q

What type of joint is the elbow?

A

Synovial hinge

53
Q

What are the three main ligaments of the elbow joint?

A

Ulnar collateral
Radial collateral
Annular ligament

54
Q

What are the attachments of the medial (ulnar) collateral ligaments?

A

Medial epicondyle

Coronoid or olecranon processes of ulnar

55
Q

What are the three clinically important bursae found in the elbow?

A

Intratendinous
Subtendinous
Subcutaneous

56
Q

Where is the intratendinous bursa of the elbow found?

A

Within the triceps brachii tendon

57
Q

Where is the subtendinous bursa of the elbow found?

A

between the olecranon and the triceps brachii tendon

58
Q

Where is the subcutaneous bursa of the elbow found?

A

Between the olecranon and overlying connective tissue

59
Q

What are the attachments of the lateral (radial) collateral ligament?

A

Lateral condyle

Annular ligament

60
Q

What ligament holds te head of the radius?

A

Annular liagment

61
Q

What muscles cause extension at the elbow joint?

A

Triceps brachii
Anoconeus
(muscles of the posterior arm compartment)

62
Q

What muscles cause flexion at the elbow joint?

A

Biceps brachii
Brachioradialis
Brachilias
(Muscles of anterior compartment of arm + brachioradialis)

63
Q

What is the nerve supply to the elbow

A

Anterior:
Radial nerve
Median nerve
Musculocutaneous nerve

Posterior
Ulnar nerve

Anatomy (34 decks)

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