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MSK > Upper Limb > Flashcards

Upper Limb Flashcards

1
Q

What happens to the radius and ulna during pronation?

A

Radius wil cross over ulna

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2
Q

What are the axio-appendicular muscles?

A

Trapezius, serratus anterior, rhomboid min and maj, subclavius, lattisimus dorsi and levator scapulae

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3
Q

What innervates the trapezius?

A

Spinal accessory nerve

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4
Q

What innervates the serratus anterior?

A

Long thoracic nerve

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5
Q

What innervates the rhomboid maj and min?

A

Dorsal scapular nerve

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6
Q

What innervates the levator scapulae?

A

Dorsal scapular nerve

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7
Q

What are the 4 rotator cuff muscles?

A 
SITS
Suprapsinous
Infraspinous
Teres minor
Subscapularis
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8
Q

Which of the rotator cuff muslces attach at the greater tuberosity?

A

Supraspinous, infraspinous, teres minor

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9
Q

Which of the rotator cuff muscles attach at the lesser tuberosity?

A

Subscapularis

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10
Q

What muscles make up the anterior compartment of the arm?

A

Biceps brachii
Brachialis
Coracobrachialis

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11
Q

What innervates the muscles of the anterior compartment of the arm?

A

Musculocutanous nerve (lateral cord)

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12
Q

What is the action of the muscles in the anterior compartment of the arm?

A

Flexion of arm and forearm

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13
Q

What extra function can the biceps brachii do?

A

Supinates forearm

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14
Q

What muscle makes up the posterior compartment of the arm?

A

Triceps brachii

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15
Q

What innervates the triceps brachii?

A

Radial nerve

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16
Q

What is the action of the triceps brachii?

A

Extension of arm and forearm

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17
Q

What muscles make up the superficial layer of the anteior compartment of the forearm?

A

Pronator teres
Flexor carpi radialis
Flexor carpi ulnaris
Palmaris longus

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18
Q

What muscles make up the intermediate layer of the anteior compartment of the forearm?

A

Flexor digitorum superficialis

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19
Q

What muscles make up the deep layer of the anteior compartment of the forearm?

A

Flexor pollicus longus
Flexor digitorum profundus
Pronator quadratus

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20
Q

What innervates the anterior compartment of the forearm?

A

Median nerve

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21
Q

What are the 2 muscles that are the exception in terms of innervation in the anterior forearm?

A

Flexor carpi ulnaris and medial half of flexor digitorum profundus

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22
Q

What are the actions of the anterior compartment of the forearm?`

A

Flexion of wrist and digits
Pronation
Adduction and abduction of wrist

23
Q

What muscles make up the superficial layer of the posterior compartment of the forearm?

A 
Brachioradialis
Anconeus
Extensor carpi radialis longus
Extensor digitorum
Extensor carpi ulnars
Extensor digiti minimi
Extensor carpi radialis brevis
24
Q

What innervates the superficial layer of the posterior compartment of the forearm?

A

Radial nerve

25
Q

What are the actions of the posterior compartment of the forearm?

A

Extension of wrist and digits

Supination, adduction and abduction of wrist

26
Q

What muscles make up the deep layer of the posterior compartment of the forearm?

A 
Supinator
Abductor pollicis longus
Extensor pollicis longus
Extensor pollicis brevis
Extensor indicis
27
Q

What innervates the deep layer of the posterior compartment of the forearm?

A

Radial nerve

28
Q

What muscles make up the thenar eminence of the thumb?

A

Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis

29
Q

What innervates the thenar eminence of the thumb?

A

Recurrent branch of the median nerve

30
Q

What muscles make up the hypothenar eminence of the hand?

A

Abductor digiti minimi
Flexor digiti minimi brevis
Opponens digiti minimi

31
Q

What innervates the hypothenar eminence of the hand?

A

Deep branch of the ulnar nerve

32
Q

Where do the lumbricals of the hand attach?

A

Tendons of flexor digitotrum profundus

33
Q

What innervates the lumbricals of the hand?

A

Laterally - median nerve

Medially - ulnar nerve

34
Q

What is the action of the dorsal interossei?

A

Abduction of digits

DAB

35
Q

What is the action of the palmar interossei?

A

Adduction of digits

PAD

36
Q

What innervates the inerossei muscles?

A

Ulnar nerve

37
Q

Where in the spinal cord does the brachial plexus arise?

A

Anterior rami of C5-T1

38
Q

What trunk arises from C5/6?

A

Superior trunk

39
Q

What trunk arises from C7?

A

Middle trunk

40
Q

What trunk arises from C8/ T1?

A

Inferior trunk

41
Q

What makes up the lateral cord?

A

Anteiror divisions from superior and middle trunks

42
Q

What makes up the posterior cord?

A

Posterior divisions from the superior, middle and inferior trunks

43
Q

What makes up the medial cord?

A

Anterior division from inferior trunk

44
Q

From what cord does the musculo-cutanoeus nerve arise from?

A

Lateral cord

45
Q

From what cord does the axillary nerve arise from?

A

Posterior cord

46
Q

From what cord does the radial nerve arise from?

A

Posterior cord

47
Q

From what cord does the ulnar nerve arise from?

A

Medial cord

48
Q

From what cord does the median nerve arise from?

A

Lateral and medial cord

49
Q

What dermatome supplies the thumb?

50
Q

What dermatome supplies the little finger and half of the ring finer?

51
Q

What dermatome supplies the middle finger, half the index and ring finger?

52
Q

What forms the carpal tunel?

A

Flexor retinaculum

Carpals

53
Q

What are the contents of the carpal tunnel?

A

Flexor digitorum superficialis (x4)
Flexor digitorum produndus (x4)
Flexor pollicis longus
Median nerve

54
Q

What is carpal tunnel syndrome?

A

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

MSK (34 decks)

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