Major Nerves / Innervation Flashcards by Adam Finney | Brainscape

Q

Radial Nerve

Roots

A

C5, 6, 7, 8

T1

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Q

Radial Nerve

4 Major Muscles Innervated

A

(BEST)

Brachioradialis

‘Extensors’

Supinator

Triceps

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Q

Radial Nerve

Cutaneous Innervation

A

Majority of Posterior Arm Below Deltoid

Lateral aspect of posterior hand

Lateral thumb

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Q

Axillary Nerve

Roots

A

C5 & C6

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Q

Axillary Nerve

2 Major Muscles

A

Deltoid

Teres Minor

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Q

Axillary Nerve

Cutaneous Innervation

A

Anterior, Lateral, Posterior Shoulder

Distal to acromium > Prox to Biceps/Triceps

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Q

Musculocutaneous Nerve

Roots

A

C5, 6 ,7

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Q

Musculocutaneous Nerve

Major Muscles (2)

A

Coracobracialis

Biceps brachii Brachialis

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Q

Musculocutaneous Nerve

Cutaneous Innervation

A

Lateral aspect of forearm

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Q

Median Nerve

Roots

A

C5 - C8

T1

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Q

Median Nerve

4 Major Muscles

A

‘Pronators’

‘Flexors’ (save for Flexor carpi ulnaris)

‘Thenars’

Lumbricles (digits 2 & 3)

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Q

Median Nerve

Cutaneous supply

A

Lateral ~1/2 of PALM

Palmar aspect of Thumb

&

lateral 2.5 fingers of hand

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Q

Ulnar Nerve

Roots

A

C8

T1

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Q

Ulnar Nerve

5 Major Muscles

A

Flexor carpi ulnaris

3 hypothenar muscles

ALL 7 interosseus

Adductor Pollicis

Lumbricles to digits 4 & 5

(Intrinsic hand muscles)

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Q

Ulnar Nerve

Cutaneous supply

A

Medial ~1/2 of hand

Anteroir and Posterior 2.5 fingers of hand

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Q

Femoral Nerve

Roots

A

L2, 3 , 4

Q

Femoral Nerve

3 Major Muscles/groups

A

Iliacus

Sartorius

Quads

Rectus femoris
Vastus Lateralis
Vastus Intermedius
Vastus Medialis

Q

Femoral Nerve

Cutaneous Innervation

A

Thigh: Medial aspect

Lower leg: medial half anterior and posterior

Q

Obturator Nerve

Roots

A

L2, L3, L4

Q

Obturator Nerve

Major Muscles

A

Adductors

(Magnus, longus, brevis)

Q

Tibial Nerve

Roots

A

L4, 5

S1, 2, 3

(L4-S3)

Q

Obturator Nerve

Cutaneous Innervation

A

Patch of medial aspect of thigh

Q

Tibial Nerve

Major Muscles

A

Part of Sciatic Nerve

Hamstrings (save short head of biceps femoris)

Gastroc

Flexor Digitoram longus

Abductor hallucis

Flexors of toes

Lumbricles and mm of sole

Q

Tibial Nerve

Cutaneous supply

A

Posterior lower leg (from just above knee pit)

Sole of Foot

Q

Common Fibular Nerve

Roots

A

L4 - S3

Q

Common Fibular Nerve

5 Major Muscles

A

Tibialis Anterior

Short head of biceps femorus (only mm above knee)

Extensors of feet/toes

Q

Common Fibular Nerve

Cutaneous supply

A

Lateral aspect of lower leg

(beginning just above knee)

Top of foot

Q

Lumbosacral plexus

A