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Phase 2b > Dermatomes, Myotomes, and Reflexes > Flashcards

Dermatomes, Myotomes, and Reflexes Flashcards

1
Q

Nerve roots of biceps reflex?

A

C5/C6

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2
Q

Nerve roots of triceps reflex?

A

C6/C7

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3
Q

Nerve roots of supinator reflex?

A

C5/C6

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4
Q

Nerve roots of brachioradialis reflex?

A

C5/C6

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5
Q

Nerve roots of patellar reflex?

A

L3/L4

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6
Q

Nerve roots of ankle reflex?

A

S1

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7
Q

Where is the C4 dermatome?

A

Over the acromioclavicular joint.

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8
Q

Where is the C5 dermatome?

A

Lateral aspect of lower edge of deltoid muscle - ‘regimental badge’.

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9
Q

Where is the C6 dermatome?

A

Palmar side of the thumb (and lateral forearm).

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10
Q

Where is the C7 dermatome?

A

Palmar side of middle finger.

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11
Q

Where is the C8 dermatome?

A

Palmar side of the little finger.

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12
Q

Where is the T1 dermatome?

A

Medial aspect of the antecubital fossa, proximal to the medial epicondyle of the humerus.

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13
Q

Where is the L1 dermatome?

A

Inguinal region and the very top of the medial thigh.

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14
Q

Where is the L2 dermatome?

A

Middle and lateral aspect of the anterior thigh.

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15
Q

Where is the L3 dermatome?

A

Medial epicondyle of the femur.

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16
Q

Where is the L4 dermatome?

A

Medial malleolus (and medial aspect of calf).

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17
Q

Where is the L5 dermatome?

A

Dorsum of the foot at the third metatarsophalangeal joint.

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18
Q

Where is the S1 dermatome?

A

Lateral aspect of the calcaneus (heel).

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19
Q

Where is the S2 dermatome?

A

Midpoint of the popliteal fossa (and some of the buttock).

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20
Q

Where is the S3 dermatome?

A

Horizontal gluteal crease.

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21
Q

Where is the S4 dermatome?

A

Perianal area.

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22
Q

Where is the S5 dermatome?

A

Perianal area.

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23
Q

Main muscles responsible for shoulder flexion?

A
  • deltoid

- pectoralis major

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24
Q

Innervation of deltoid?

A

Axillary nerve - C5 and C6.

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25
Q

Innervation of pectoralis major?

A

Nerve roots C5 - T1.

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26
Q

Main muscles responsible for shoulder extension?

A
  • latissimus dorsi
  • teres major
  • pectoralis major
  • long head of triceps brachii
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27
Q

Innervation of latissimus dorsi?

A

Thoracodorsal nerve (C6, 7, 8).

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28
Q

Innervation of teres major?

A

Lower subscapular nerve (C5, 6, 7).

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29
Q

Innervation of long head of triceps brachii?

A

Radial nerve (C7 branch).

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30
Q

Main muscles responsible for shoulder abduction?

A
  • deltoid

- supraspinatus

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31
Q

Innervation of supraspinatus?

A

Suprascapular nerve (C5, C6).

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32
Q

Main muscles responsible for shoulder adduction?

A
  • pectoralis major
  • latissimus dorsi
  • teres major
33
Q

Main muscles responsible for internal rotation of the shoulder?

A
  • subscapularis

- teres major

34
Q

Innervation of subscapularis?

A

Upper and lower subscapular nerves (C5, C6).

35
Q

Main muscles responsible for external rotation of the shoulder?

A
  • infraspinatus

- teres minor

36
Q

Innervation of infraspinatus?

A

Suprascapular nerve (C5, C6).

37
Q

Innervation of teres minor?

A

Axillary nerve (C5, C6).

38
Q

Muscles responsible for elbow flexion?

A
  • biceps brachii

- brachialis

39
Q

Innervation of elbow flexors?

A

Musculocutaneous nerve - C5, C6, C7.

40
Q

Muscles responsible for elbow extension?

A

Triceps brachii.

41
Q

Innervation of triceps brachii?

A

Radial nerve (C6, C7, C8 branches).

42
Q

Pronators of the forearm?

A
  • pronator teres
  • pronator quadratus
  • brachioradialis (in elbow flexion)
43
Q

Innervation of forearm pronators?

A

Pronator teres - median nerve C6, C7.
Pronator quadratus - median nerve C7, C8.
Brachioradialis - radial nerve C5, C6.

44
Q

Supinators of the forearm?

A
  • supinator

- biceps brachii (in flexion)

45
Q

Innervation of supinator?

A

Radial nerve (deep branch, C7/C8).

46
Q

Wrist extension myotome?

A

C6

47
Q

Wrist flexion myotome?

A

C7

48
Q

Finger flexion myotome?

A

C8

49
Q

Finger abduction myotome?

A

T1

50
Q

Muscle responsible for thumb opposition?

A

Opponens pollicis

51
Q

Innervation of opponens pollicis?

A

Median nerve (C8, T1).

52
Q

Which muscle abducts the thumb?

A

Abductor pollicis brevis

53
Q

Innervation of abductor pollicis brevis?

A

Median nerve (C8, T1).

54
Q

Innervation of finger extensors?

A

Radial nerve (posterior interosseous nerve C7/C8).

55
Q

Adduction of thumb muscle?

A

Adductor pollicis

56
Q

Innervation of adductor pollicis?

A

Deep branch of ulnar nerve (C8, T1).

57
Q

L2 myotome?

A

Hip flexion.

58
Q

L3 myotome?

A

Knee extension.

59
Q

L4 myotome?

A

Ankle dorsiflexion.

60
Q

L5 myotome?

A

Extension of big toe.

61
Q

S1 myotome?

A

Ankle plantarflexion.

62
Q

Hip abduction nerve roots?

A

L4/L5

63
Q

Hip adduction nerve roots?

A

L2/L3

64
Q

Hip extension nerve roots?

A

L5/S1

65
Q

Knee flexion nerve roots?

A

S1

66
Q

Ankle eversion nerve roots?

A

L5/S1

67
Q

Ankle inversion nerve roots?

A

L4

68
Q

Big toe dorsiflexion nerve roots?

A

L5

69
Q

Primary hip abductor muscles?

A
  • gluteus medius
  • gluteus minimus
  • tensor fasciae latae
70
Q

Adductors of the hip?

A
  • adductor longus
  • adductor brevis
  • adductor magnus
  • gracilis
  • pectineus
71
Q

Hip flexor muscles?

A
  • iliacus
  • psoas
  • pectineus
  • rectus femoris
  • sartorius
72
Q

Hip extensor muscles?

A
  • gluteus maximus
  • biceps femoris (long head)
  • semitendinosus
  • semimembranosus
73
Q

Knee flexor muscles?

A
  • biceps femoris
  • semitendinosus
  • semimembranosus
  • popliteus (initiator)
    (assisted by gracilis and sartorius)
74
Q

Knee extensor muscles?

A
  • quadriceps femoris (rectus femoris, vastus lateralis, vastus medialis, vastus intermedius)
  • tensor fasciae latae (assists extension)
75
Q

Ankle dorsiflexion muscles?

A

Tibialis anterior

76
Q

Ankle plantarflexion muscles?

A
  • soleus

- gastrocnemius

77
Q

Ankle eversion muscles?

A
  • peroneus longus

- peroneus brevis

78
Q

Ankle inversion muscles?

A
  • tibialis anterior

- tibialis posterior

Phase 2b (1 decks)

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