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MSK week 2 > Upper limb > Flashcards

Upper limb Flashcards

1
Q

What is the only joint that keeps the upper limb in contact with the body

A

Sternoclavicular joint (saddle joint)

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2
Q

Which joint in the upper limb are plane?

A

Acromoclavicular joint

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3
Q

What are the elbow joints? What type are they?

A

Humeroulnar joint
Radiohumeral joint

hinge type

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4
Q

Annular ligament of radius

A

Keep the radius attached to the ulnar and allows it to rotate.
it limits the movement at the radiohumeral joint (ball and socket joint)

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5
Q

How many planes of movement does an ellipsoid joint have? give an example

A

Radiocarpal joint

2 planes

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6
Q

What are the two main muscles that cause supination

A

biceps bracii

supinator

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7
Q

In pronation what moves

A

Radius moves over the ulna

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8
Q

What are the pivot joints in the upper limb?

A

Distal radioulnar joint

Proximal radioulnar joint

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9
Q

What rotation does the thumb have?

A

90 degree on all of the movements

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10
Q

What movement is a thumbs up?

A

Extension

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11
Q

What is the trapezius?

A

on the neck
triangle muscle
Innervation is the CNXI
three parts- descending, transverse and ascending

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12
Q

Describe the rhomboid minor and major

A

draws scapula back- retract it but also slightly elevate it due to the direction of the fibres
minor is superior
Innervated by dorsal scapula nerve

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13
Q

Serratus anterior innervation?

A

Long thoracic nerve

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14
Q

What are the 4 rotator cuff muscles?

A

Teres minor
Infraspinatus
Supraspinatus
Subscapularis

(Top 3 attached to the greater tuberosity, subscapularis attaches to the lesser tuberosity)

Remember TISS from greater to lesser tuberosity

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15
Q

How much of the glenoid head fits in the fossa at any one time?

A

1/3

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16
Q

What type of joint is the 5th MCP joint?

A

Condyloid type

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17
Q

What type of joint is the 1st CMC joint

A

Saddle type

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18
Q

Biceps bracii- which is the longer of the heads

A

The lateral head is the long head (goes through bicipital groove)

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19
Q

What is the innervation of the serrates anterior?

A

Long thoracic nerve

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20
Q

With a bent arm what is the most powerful supinator?

A

Biceps brachii

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21
Q

What are the muscles in the superficial layer of the anterior compartment of the forearm?

A 
PFPF
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
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22
Q

What muscle is in the intermediate layer of the anterior compartment of the forearm?

A

flexor digitorum superficialis

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23
Q

What is your beer drinking muscle? (the one that pops out)

A

Bracioradialis

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24
Q

Triangle muscle that attaches to the humorous and comes down onto the ulnar. Some point have it-others don’t. Dosent really do much

A

Anconeus

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25
Q

What does the extensor digits minimi have its effect on?

A

little finger

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26
Q

What Is the posterior compartment of the forarm innervated by?

A

radial nerve

27
Q

What is the innervation of the levator scapulae

A

Dorsal scapula nerve

28
Q

What is the “bye bye” muscle

A

lumbricals

29
Q

What is innervated by the median nerve? (the rest in the hand are by the ulnar nerve)

A

Lateral 2 lumbricals

30
Q

Brachial plexus

A

A collection of nerves arising from c5-T1 anterior rami.

31
Q

Brachial plexus-All the posterior divisions come together to form the

A

posterior cord

32
Q

If the median nerve is pinched what movement is inhibited

A

thumb

33
Q

When you bend your arm , the artery is pinched. How is blood supplied?

A

Elbow anastomosis

34
Q

What is the innervation of the elevator scapulae?

A

Dorsal scapula nerve

35
Q

What muscles are in the anterior compartment of the arm?

A

Biceps brachii
crachialis
coracobrachialis

36
Q

What is the innervation and action of the anterior compartment of the arm?

A

Innervation- musculocutaneous n

actions- flexion of arm and forearm

37
Q

What muscle is in the posterior compartment of the arm

A

triceps brachii

38
Q

What is the innervation and action of the arm

A

Innervation - radial n

actions- extension of arm and forearm

39
Q

What muscles are in the forearm anterior compartment - deep layer?

A

Flexor pollicis longus
flexor digitorum profundus
pronator quadratus

40
Q

Forearm posterior compartment- superficial layer?

A 
Brachioradialis
ancones
extensor carpi radialis longus
extensor digitorum
extensor carpi ulnari
extensor carpi radialis brevis
extensor digiti minimi
41
Q

Forearm posterior compartment-deep layer?

A 
Supinator
abductor pollicis longus
extensor pollicis longus
extensor indices
extensor pollicis brevis
42
Q

What are the 3 muscles of the thenar eminence?

A

abductor pollicis brevis
flower pollicis brevis
oppenens brevis

aspected by carpal tunnel syndrome

43
Q

What is the innervation of the thenar eminence?

A

Recurrent branch of the median nerve

44
Q

What are the muscles of the hypothenar eminence?

A

Abductor digiti minimi
flexor digiti minimi brevis
opponens digiti minimi

45
Q

What is the innervation of the hypothenar eminence

A

deep branch of the ulnar nerve

46
Q

Where are the lumbricals attached?

A

to the tendons of the flexor digitorum profundus

47
Q

What is the innervation of the lumbricals?

A

Median n- lateral 2

Ulnar n - medial 2

48
Q

What are the two interossei and hat are their functions?

A

Dorsal interossei - abduction of digits (DAB)

Palmar interossei - adduction of digits (PAD)

49
Q

What is the innervation of the interossei?

A

Ulnar

50
Q

Where does the brachial plexus travel?

A

passes through the axilla to the medial arm

cords travel around the brachial artery

51
Q

What is the mnemonic to remember the brachial plexus (proximal to distal)

A

Really Tired Drink Coffee Now

Roots
Trunks
Divisions
Cords
Nerves
52
Q

What roots of the brachial plexus form the superior trunk?

A

C5, C6

53
Q

What root of the brachial plexus form the Mid trunk?

A

C7

54
Q

What roots of the brachial plexus form the inferior trunk?

A

C8,T1

55
Q

What divisions of the brachial plexus form the lateral cord?

A

Anterior divisions from the superior and mid trunk

56
Q

What divisions of the brachial plexus form the posterior cord?

A

posterior divisions of the superior, mid and inferior trunks

57
Q

What divisions of the brachial plexus form the medial cord?

A

Anterior division of the inferior trunk

58
Q

What nerves are formed from the posterior cord?

A

axially and radial

59
Q

What nerves are formed from the lateral and medial cords

A

Lateral- Musculocutaneous
Lateral and medial- Median
Medial- Ulnar

60
Q

What is carpal tunnel formed by?

A

Flexor retinaculum

Carpals

61
Q

What is contained within the carpal tunnel?

A

Flexor digitorum superficialis (x4)
Flexor digitorium profundus (x4)
Flexor pollicis longus (x1)
Median nerve

62
Q

What is carpal tunnel syndrome?

A

Compression of median nerve
weakness in the thenar muscles
Numbness in digits 1-3 and lateral half of digit 4

63
Q

What does the axillary artery divide into and what does this divide into

A

Axillary artery becomes the brachial artery which divides to become the radial and ulnar arteries. These later form the superficial and deep arch

64
Q

What forms the scapular anastomosis?

A

suprascapular a
dorsal scapular a
circumflex scapular a

MSK week 2 (11 decks)

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