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Module 8 > Nerve innervations and pathways > Flashcards

Nerve innervations and pathways Flashcards

1
Q

what spinal nerves for the brachial plexus?

A

C5-C8/T1

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2
Q

what are the three trunks of the brachial plexus?

A

superior
middle
inferior

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3
Q

what are the three cords of the brachial plexus?

A

lateral
posterior
medial

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4
Q

where do the roots of the brachial plexus pass through?

A

gap between anterior and middle scalene and subclavian artery

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5
Q

where does the axillary originate?

A

C5-C6

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6
Q

what does the axillary nerve innervate?

A

deltoid
teres minor
super-lateral skin of arm

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7
Q

where does the musculocutaneous nerve originate?

A

C5-C7

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8
Q

what does the musculocutaneous nerve innervate?

A

coracobrachialis
bicep brachii
brachialis
lateral skin of forearm

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9
Q

where does the radial nerve originate?

A

C5-T1

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10
Q

what does the radial nerve innervate?

A

posterior arm and forearm
skin of the posterior and inferolateral arm
posterior forearm skin and dorsum of hand
proximal lateral 3 1/2 digits

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11
Q

where does the median nerve originate?

A

lateral root: C6-C7
medial root: C8-T1

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12
Q

what does the median nerve innervate?

A

-anterior forearm
-skin of the palm and Palmer and distal dorsal aspect of lateral 3 1/2 digits
-NOT the flexor carpi ulnas and ulnar half of flexor digiturm profundus
-intrinsic muscle

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13
Q

where does the ulnar nerve originate?

A

C8-T1

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14
Q

what does the ulnar nerve innervate?

A

flexor digitorum ulnaris and ulnar half of flexor digtiorum profundus
intrinsic muscles of the Hand
skin of the hand medial and medial 1 1/2 digits

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15
Q

where does the lateral pectoral nerve innervate?

A

pectorals major

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16
Q

where does medial pectoral nerve innervate?

A

pectoralis minor and sternocostal part of pectorals major

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17
Q

where does the upper subscapular nerve innervate?

A

superior portion of subsacpularis

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18
Q

where does the lower sub scapular nerve innervate?

A

inferior portion of subscapularis and teres minor

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19
Q

where does the thoracodorsal nerve innervate?

A

latissimus dorsi

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20
Q

where does the dorsal scapular nerve innervate?

A

rhomboids

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21
Q

where does the long thoracic nerve innervate?

A

serrates anterior

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22
Q

where does the suprascapular nerve innervate?

A

supraspinatus
infraspinatus
GH

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23
Q

where does the subclavian nerve innervate?

A

subclavius and SC

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24
Q

where are most nerves of the upper limbs derived from?

A

brachial plexus

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25
Q

where are the nerves of the shoulder derived from?

A

cervical plexus

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26
Q

what does the supraclavicular nerve supply?

A

skin over clavicle and superolateral pec. major

27
Q

what does the superior lateral cutaneous nerve of the arm supply?

A

lower deltoid and lateral mid arm

28
Q

what does the inferior lateral cutaneous nerve of the arm supply?

A

skin over the inferolateral aspect of the arm

29
Q

where does the intercostobrachial nerve supply?

A

skin over axilla and medial aspect of the arm

30
Q

where does the lumbar plexus arise from?

A

L1-L4

31
Q

what structures does the lumbar plexus pass?

A

superficial and deep psoas major
anterior QL

32
Q

where does the lumbar plexus supply?

A

anterolateral abdominal wall
external genitalia
lower limbs (parts)

33
Q

where does the femoral nerve originate?

A

L2-L4

34
Q

what does the femoral nerve innervate?

A

lliacus
flexors of the hip
extensors of knee

35
Q

where does the obturator nerve originate?

A

L2-L4

36
Q

what does the obturator nerve innervate?

A

adductor muscles

37
Q

where does the lumbosarcal trunk originate?

A

L4-L5

38
Q

where does the lateral cutaneous of the thigh nerve supply?

A

anterior lateral thigh

39
Q

where does the anterior cutaneous nerve of the thigh supply?

A

anterior and medial thigh

40
Q

what makes up the sacral plexus?

A

L4-S4

41
Q

where is the sacral plexus located?

A

lesser pelvis through the great sciatic foramen

42
Q

where does the sciatic nerve originate?

A

L4-S3

43
Q

where does the sciatic nerve originate?

A

hip joint
flexors of the knee
all muscles of the leg and foot

44
Q

what is the largest nerve in the body?

A

sciatic

45
Q

where does the sciatic nerve split into the tibial and common fibular nerve?

A

popliteal fossa

46
Q

what nerve supplies the long head of bicep femoris?

A

tibial branch

47
Q

what nerve supplies the short head of bicep femoris?

A

fibular branch

48
Q

where does the pudendal nerve originate?

A

S2-S4

49
Q

what does the pudendal nerve innervate?

A

structures of perineum
sensations of external gantialia
perineal muscles
external urethral sphincter
external anal sphincter

50
Q

where does the superior gluteal nerve originate?

A

L4-S1

51
Q

what does the superior gluteal nerve innervate?

A

glut med
glut min
tensor fasciae latae

52
Q

where does the inferior gluteal nerve originate?

A

L5-S2

53
Q

what does the inferior gluteal nerve innervate?

A

glut max

54
Q

where does the saphenous nerve originate?

A

femoral nerve

55
Q

what does the saphenous nerve innervate?

A

skin of the medial ankle and foot

56
Q

where does the tibial nerve originate?

A

sciatic nerve

57
Q

what does the tibial nerve supply?

A

posterior muscles of the leg and knee joint

58
Q

where does the common fibular nerve originate?

A

sciatic nerve

59
Q

what does the common fibular nerve innervate ?

A

lateral posterior leg and knee joint

60
Q

where does the superficial fibular nerve originate?

A

common fibular nerve

61
Q

what does the superficial fibular nerve innervate?

A

fib long and brevis
skin on distal third of anterior surface of the leg and dorsum of foot

62
Q

where does the deep fibular nerve originate?

A

common fibular nerve

63
Q

where does the deep fibular nerve innervate?

A

anterior muscles of the leg and dorsum foot
supplies skim of 1st interdigital cleft

64
Q

what nerve winds around the humerus to the deep deltoid?

A

axillary

Module 8 (12 decks)

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