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Back & Extremities > LE Dermatomes and Nerves (Final) > Flashcards

LE Dermatomes and Nerves (Final) Flashcards

1
Q

What is the origin of the subcostal n.?

A

T12 anterior ramus

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2
Q

Which nerve lateral cutaneous branch supplies skin of the hip region inferior to the anterior iliac crest and anterior to the greater trochanter of femur?

A

subcostal n.

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3
Q

What is the origin of the ilioinguinal n.?

A

lumbar plexus at L1, sometimes T12

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4
Q

Which nerve femoral branch supplies skin over the medial femoral triangle?

A

ilioinguinal n.

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5
Q

What is the origin of the genitofemoral n.?

A

lumbar plexus at L1 and L2

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6
Q

Which nerve femoral branch supplies skin over the lateral femoral triangle?

A

genitofemoral n.

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7
Q

Which nerve genital branch supplies anterior scrotum in males and labia majora in females?

A

genitofemoral n.

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8
Q

What is the origin of the iliohypogastric n.?

A

lumbar plexus at L1 and sometimes T12

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9
Q

Which nerve lateral cutaneous branch supplies the superolateral quadrant of buttock?

A

iliohypogastric n.

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10
Q

What is the origin of the lateral cutaneous nerve of the thigh?

A

lumbar plexus at L2/L3

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11
Q

Which nerve supplies skin on the anterior and LATERAL aspects of thigh?

A

lateral cutaneous n. of thigh

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12
Q

What is the origin of the anterior cutaneous branches?

A

lumbar plexus via femoral nerve (L2-L4)

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13
Q

Which nerve supplies skin on the anterior and MEDIAL aspects of thigh?

A

anterior cutaneous branches

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14
Q

What is the origin of the cutaneous branch of obturator n.?

A

lumbar plexus via obturator nerve (L2-L4)

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15
Q

Which nerve supplies the skin on the middle part of medial thigh?

A

cutaneous branch of obturator nerve

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16
Q

What is the origin of the saphenous n.?

A

lumbar plexus via femoral nerve (L3-L4)

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17
Q

Which nerve supplies the skin on the medial side of leg and foot?

A

saphenous n.

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18
Q

What is the origin of the posterior cutaneous n. of thigh?

A

sacral plexus (S1-S3)

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19
Q

Which nerve terminal branches pierces fascia lata to supply skin of posterior thigh and popliteal fossa?

A

posterior cutaneous n. of thigh

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20
Q

What is the origin of the superficial fibular n.?

A

common fibular n. (L4-S1)

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21
Q

What nerve supplies the skin on the anterolateral leg and dorsum of foot, excluding web between great and 2nd toe?

A

superficial fibular n.

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22
Q

What is the origin of the deep fibular n.?

A

common fibular nerve (L5)

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23
Q

Which nerve supplies the skin of the web between great toe and 2nd toe?

A

deep fibular n.

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24
Q

What is the origin of the sural n.?

A

tibial and common fibular nerves (S1-S2)

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25
Q

Which nerve supplies the skin of the posterolateral leg and lateral margin of foot?

A

sural n.

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26
Q

What is the origin of the medial plantar n.?

A

tibial n. (L4-L5)

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27
Q

Which nerve supplies the skin on the MEDIAL side of sole of foot and sides?

A

medial plantar n

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28
Q

Which nerve supplies the skin on plantar aspect of foot and nail beds of MEDIAL 3.5 toes?

A

medial plantar n.

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29
Q

What is the origin of the lateral plantar n.?

A

tibial n. (S1-S2)

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30
Q

Which nerve supplies the skin on the LATERAL side of sole of foot and sides?

A

lateral plantar n.

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31
Q

Which nerve supplies the skin on plantar aspect of foot and nail beds of LATERAL 1.5 toes?

A

lateral plantar n.

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32
Q

What is the origin of the calcaneal nerves?

A

tibial and sural nerves (S1-S2)

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33
Q

Which nerve supplies the skin of the heel?

A

calcaneal nerves

34
Q

What is the origin of the superior clunial nerves?

A

L1-L3 posterior rami

35
Q

Which nerve supplies the skin overlying superior and central parts of buttock?

A

superior clunial nerves

36
Q

What is the origin of the medial clunial nerves?

A

S1-S3 posterior rami

37
Q

Which nerve supplies the skin on the medial buttock and intergluteal cleft?

A

medial clunial nerves

38
Q

What is the origin of the inferior clunial nerves?

A

posterior cutaneous nerve of thigh (S2/S3)

39
Q

Which nerve supplies the skin on the inferior buttock (overlying gluteal fold)?

A

inferior clunial nerves

40
Q

What is the origin of the sciatic n.?

A

sacral plexus at the anterior and posterior divisions of anterior rami of L4-S3 spinal nerves

41
Q

T/F: sciatic nerve supplies no muscles in the gluteal region

A

true

42
Q

Which nerve supplies all muscles of the posterior compartment of the thigh (tibial division supplies semitendinosis, semimembranosus, biceps femoris long head, and biceps femoris short head is supplied by common fibular divison)?

A

sciatic n.

43
Q

Which division of the sciatic n. goes to S3?

test q

A

Tibial n.

(common fibular/peroneal n. stops at S2)

44
Q

What is the origin of the superior gluteal n.?

A

sacral plexus (posterior divisions of anterior rami of L4-S1 spinal nerves)

45
Q

Which nerve innervates gluteus medius and minimus, and tensor fascia lata?

A

superior gluteal n.

46
Q

What is the origin of the inferior gluteal n.?

A

sacral plexus (posterior divisions of anterior rami of L5-S2 spinal nerves)

47
Q

Which nerve innervates gluteus maximus?

A

inferior gluteal n.

48
Q

What is the origin of the nerve to quadratus femoris?

A

sacral plexus (anterior divisions of anterior rami of L4-S1 spinal nerves)

49
Q

Which nerve innervates the hip joint, inferior gemellus, and quadratus femoris?

test q

A

nerve to quadratus femoris

50
Q

Which nerve innervates everything in the back of the leg?

A

tibial n.

51
Q

What is the origin of the tibial n.?

A

sciatic n.

52
Q

Which nerve innervates the posterior muscles of the leg and knee joint?

A

tibial n.

53
Q

Which nerve innervates the gastrocnemius?

A

tibial n.

54
Q

Which nerve innervates the soleus?

A

tibial n.

55
Q

Which nerve innervates the plantaris?

A

tibial n.

56
Q

Which nerve innervates the tibialis posterior?

A

tibial n.

57
Q

Which nerve innervates the flexor hallucis longus?

A

tibial n.

58
Q

Which nerve innervates the flexor digitorum longus?

A

tibial n.

59
Q

Which nerve innervates the popliteus?

A

tibial n.

60
Q

What is the origin of the medial plantar n?

A

larger terminal branch of tibial n.

61
Q

Which nerve supplies the abductor hallucis?

A

medial plantar n.

62
Q

Which nerve supplies flexor digitorum brevis?

A

medial plantar n.

63
Q

Which nerve innervates flexor hallucis brevis?

A

medial plantar n.

64
Q

Which nerve innervates the 1st lumbrical?

A

medial plantar n.

65
Q

What is the origin of the lateral plantar n.?

A

smaller terminal branch of tibial n.

66
Q

Which nerve supplies the quadratus plantae?

A

lateral plantar n.

67
Q

Which nerve innervates the abductor digiti minimi?

A

lateral plantar n.

68
Q

Which nerve innervates the digiti minimi brevis?

A

lateral plantar n.

69
Q

Which nerve deep branch supplies the plantar and dorsal interossei?

A

lateral plantar n.

70
Q

Which nerve deep branch innervates the lateral 3 lumbricals?

A

lateral plantar n.

71
Q

Which nerve deep branch innervates adductor hallucis?

A

lateral plantar n.

72
Q

Which nerve supplies skin on the sole of lateral side of foot to a line splitting the 4th digit?

A

lateral plantar n.

73
Q

Which nerve supplies the anterior muscles of the leg?

A

deep fibular n.

74
Q

Which nerve innervates tibialis anterior?

A

deep fibular n.

75
Q

Which nerve innervates extensor digitorum longus?

A

deep fibular n.

76
Q

Which nerve innervates extensor hallucis longus?

A

deep fibular n.

77
Q

Which nerve innervates fibularis tertius?

A

deep fibular n.

78
Q

Which nerve innervates extensor digitorum brevis?

A

deep fibular n.

79
Q

Which nerve innervates extensor hallucis brevis dorsum of foot and skin of 1st interdigital cleft?

A

deep fibular n.

80
Q

Which nerve supplies fibularis longus and brevis?

A

superficial fibular n.

81
Q

Which nerve supplies the skin on distal 3rd of anterior surface of leg and dorsum of foot?

A

superficial fibular n.

Back & Extremities (10 decks)

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