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Anatomy > Upper Limbs > Flashcards

Upper Limbs Flashcards

1
Q

Motor and sensory innervation of the branchial plexus

A

ventral rami of C5 through T1 spinal nerves

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2
Q

Five major nerves arise from the branchial plexus

A
  1. Musculocutaneous
  2. Median
  3. Ulnar
  4. Axillary
  5. Radial
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3
Q

Anterior division fibers from the brachial plexus

A
  1. Musculocutaneous
  2. Median
  3. Ulnar
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4
Q

Posterior division fibers from the brachial plexus

A
  1. Axillary
  2. Radial
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5
Q

What innervates the anterior division fibers of the brachial plexus?

A

muscles in the anterior arm, anterior forearm and palmar

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6
Q

Main function of the anterior division fibers of the brachial plexus?

A

Flexors

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7
Q

What innervates the posterior division fibers of the brachial plexus?

A

muscles in the posterior arm and forearm

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8
Q

Main function of the posterior division fibers of the brachial plexus?

A

Extensors

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9
Q

Roots of the brachial plexus

A

5 (C5, C6, C7, C8 AND T1)

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10
Q

Trunks of the brachial plexus

A

3 (supperior, middle, inferior)

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11
Q

Divisions of the brachial plexus

A

6

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12
Q

Cords of the brachial plexus

A

3: Lateral, posterior, medial

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13
Q

Terminal branches of the brachial plexus

A

5: Musculocutaneous, axilar, radial, median, ulnar

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14
Q

Musculocutaneous roots

A

C5-C6

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15
Q

Median nerve roots

A

C5-T1

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16
Q

Ulnar nerve roots

A

C8-T1

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17
Q

Axillary nerve roots

A

C5-C6

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18
Q

Radial nerve roots

A

C5-T1

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19
Q

Muscles innervated by the musculocutaneous nerve

A

all the muscles of the anterior compartment of the arm

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20
Q

Nerve incharged of Flex elbow

A

Musculocutaneous nerve (C5-C6)

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21
Q

Nerve that innevates the hand thenar compartment, and central compartment (lumbricals digits 2-3)

A

Median nerve (C5-T1)

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22
Q

Nerve that innervates the anterior compartment of the forearm except 1 1/2 muscles innervated by the median nerve

A

Ulnar nerve (C8-T1)

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23
Q

Nerve that innervates the hand:
* Hypothenar compartment
* Central comaprtment: interossei muscles (palmar and dorsal)
* Lumbricals: Digits 4-5
* Adductor pollicis

A

Ulnar nerve (C8-T1)

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24
Q

Nerve that innervates the deltoid and teres minor

A

Axillary nerve (C5-C6)

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25
Q

Nerve that innervates the posterior compartment muscles of the arm and forearm

A

Radial nerve (C5-T1)

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26
Q

Nerve incharged of
Supination (biceps brachii)

A

Musculocutaneuos nerve (C5-T6)

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27
Q

Nerve that innevates the anterior compartment of the Forearm except for the flexor carpi ulnaris and the ulnar half of the flexor digitorium profundus.

A

Median nerve (C5-T1)

28
Q

Nerve in charged of flex wrist and all digits

A

Median nerve (forearm)

29
Q

Nerve in charged of pronation

A

Median nerve (forearm)

30
Q

Nerve in charged of opposition of the thumb

A

Median nerve (hand)

31
Q

Nerve in charged of flex metacarpophalangeal (MP) joints of digits 2-3

A

Median nerve (hand)

32
Q

Nerve in charged of extend interphalangeal (PIPand DIP) joints of digits 2-3

A

Median nerve (hand)

33
Q

Nerve in charged of flex wrist (weak) and digits 4-5

A

Ulnar nerve (C8-T1)

34
Q

Nerve incharged of dorsal - abduct digits 2-5 (DAB)

A

ulnar nerve (hand, C8-T1)

35
Q

Nerve incharged of palmar adduction digits 2-5 (PAD)

A

Ulnar nerve (hand)

36
Q

Nerve incharged of assist lumbricals in MP flexion and IP extension digits 2-5

A

Ulnar nerve (hand)

37
Q

Nerve incharged of flex MP and extend PIP and DIP joints of digits 4-5

A

ulnar nerve

38
Q

Nerve incharged of adduct the thumb

A

ulnar nerve

39
Q

Nerve incharged of abduct shoulder -15º-110º

A

Axillary nerve

40
Q

Nerve incharged of lateral rotation of shoulder

A

axillary nerve

41
Q

Nerve incharged of extend MP, wrist, and elbow

A

radial nerve (C5-T1)

42
Q

Damage root nerves of the Erb-duchenne Palsy (Waiter’s Tip Syndrome)

A

C5 - C6 (or the superior trunk)

43
Q

Damage nerves of the Erb-duchenne Palsy (Waiter’s Tip Syndrome)

A

Axillary
Suprascapular
Musculocutaneous

44
Q

The **tuperior trunk **of the brachial plexus is formed by which roots?

A

C5-C6

45
Q

The **middle trunk **of the brachial plexus is formed by which roots?

A

C7

46
Q

The **Inferior trunk **of the brachial plexus is formed by which roots?

A

C8-T1

47
Q

What paralysis is?
* Arm medially rotated and adducted at the shoulder.
* Forearm extended and pronated
* Sign of waiters tip

A

Erb-duchenne Palsy

48
Q

Damage root nerves of the Klumpke’s paralysis

A

C8 and T1 (or inferior trunk)

49
Q

Clinical characteristics of Klumpke’s paralysis

A

Forearm supinated with wrist extended.
Hand flexed at interphalangeal joint and hyperextended at metacarpophalangeal joing (claw hand)

50
Q

Can Horner’s syndrome may be part of the Kplumpke’s paralysis? why?

A

Yes, because it’s caused by a lession on T1

51
Q

Dermatome paresthesia of a C5 root lession

A

Lateral borded of upper arm

52
Q

Dermatome paresthesia of a C6 root lession

A

Laterak forearm to thumb

53
Q

Dermatome paresthesia of a C8 root lession

A

Medial forearm to little finger

54
Q

Dermatome paresthesia of a T1 root lession

A

Medial arm to elbox

55
Q

Muscles affected by a C5 root lession

A

Deltod
Rotator cuff
Serratus Superior
Biceps
Brachioradiallis

56
Q

Muscles affected by a C6 root lession

A

Biceps
Brachioradialis
Brachialis
Supinator

57
Q

Muscles affected by a C8 root lession

A

Finger flexors
Wrist flexor
Hand muscles

58
Q

Muscles affected by a T1 root lession

A

Hand muscles

59
Q

Reflex test on a C5 root lession

A

None

60
Q

Reflex test on a C6 root lession

A

Biceps tendon

61
Q

Reflex test on a C8 root lession

A

None

62
Q

Reflex test on a T1 root lession

A

None

63
Q

Causes of lession on C5

A

Upper trunk compression

64
Q

Causes of lession on C6

A

Upper trunk compression

65
Q

Causes of lession on C8

A

Lower trunk compression

66
Q

Causes of lession on T1

A

Lower trunk compression

Anatomy (5 decks)

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