ANATOMY - peripheral nerves and spinal nerves Flashcards by Emma Hill

Q

knee extension

A

L3 L4 (kick the door)

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Q

knee flexion

A

L5 - S1

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Q

hip flexion

A

L2 L3

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Q

hip extension

A

L4 L5

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Q

foot dorsiflexion

A

L4 L5

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Q

foot plantarflexion

A

S1 S2 (buckle my shoe)

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Q

foot eversion

A

L4

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Q

foot inversion

A

L5 S1

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Q

motor evaluation of C5

A

shoulder abduction
biceps
deltoid

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Q

motor evaluation of C6

A

elbow flexion
biceps
wrist extensors

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Q

motor evaluation of C7

A

elbow extension - triceps
wrist flexors
finger extension

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Q

motor evaluation of C8

A

finger flexion - flexion digitorum superficialis

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Q

motor evaluation of T1

A

interossei - spreading out fingers and bringing back in

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Q

sensory evaluation of C5

A

badge patch

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Q

sensory evaluation of C6

A

lateral aspect of forearm and thumb

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Q

sensory evaluation of C7

A

middle finger

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Q

sensory evaluation of C8

A

little finger

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Q

sensory evaluation of T1

A

medial aspect of forearm arm

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Q

what nerve, myotome and muscle is tested in:

shoulder abduction

A

deltoid
axillary nerve
C5

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Q

what nerve, myotome and muscle is tested in:

elbow extension

A

tricep
radial nerve
C7

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Q

what nerve, myotome and muscle is tested in:

finger extension

A

extensor digitorum
posterior interosseus (radial)
C7

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Q

what nerve, myotome and muscle is tested in:

index finger abduction

A

1st dorsal interosseus
ulnar
T1

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Q

what nerve, myotome and muscle is tested in:

hip flexion

A

iliopsoas
femoral
L1 L2

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Q

what nerve, myotome and muscle is tested in:

knee flexion

A

hamstrings
sciatic
S1

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what nerve, myotome and muscle is tested in: | ankle dorsiflexion

peroneals common peroneal and sciatic L4 L5

what nerve, myotome and muscle is tested in: | great toe dorsiflexion

extensor hallucis longus common peroneal L5

spinal nerves supply everything in one segment of the body wall each spinal nerve will contain what

somatic sensory somatic motor sympathetic

what does the sensory component of the posterior rami supply

strip down the centre of the back

the anterior rami form _____

plexuses

what are the 4 plexuses formed by the anterior rami

cervical brachial lumbar sacral

what anterior rami dont contribute to plexuses

T2 - T12

the innervation of the trunk is by what

"named nerves"

what supplies the upper anterolateral trunk wall

intercostal nerves

the intercoastal nerves are the anterior rami of what nerves

T2 - T11

the subcostal nerve is the anterior rami of what and supplies what

T12 | strip just below the upper anterolateral trunk

what supplies the anterolateral trunk wall

iliohypogastric and ilioinguinal nerves

how are the iliohypogastric and ilioinguinal nerves formed

bifurcation of anterior ramus of L1 spinal nerve

what is the difference between a spinal nerve and a named nerve

spinal nerve: axons originating from one spinal cord level | named nerve: axons originating from one or more spinal levels supplying a particular level

what are the roots of the femoral nerve

L2 - L4

area of cutaneous innervation of the femoral nerve crosses _ true dermatomes

3

the roots of the femoral nerve are L2-L4 | what does this mean?

contains axons (S, M, SP) that connect via spinal nerve roots L2 L3 L4 with spinal cord segments L2 L3 and L4

what are the roots of the median nerve

C6 - T1

what are the roots of the musculocutaneous nerve

C5 - C7

what are the roots of the axillary nerve

C5 C6

what are the roots of the radial nerve

C5 - T1

what are the roots of the ulnar nerve

C8 - T1

motor innervation of musculocutaneous nerve

Innervates the brachialis, biceps brachii and coracobrachialis muscles

motor innervation of the axillary nerve

Innervates the teres minor and deltoid muscles

motor innervation of the median nerve

most of the flexor muscles in the forearm the thenar muscles the two lateral lumbricals associated with the index and middle fingers ``` LOAF: Lateral 2 lumbricals Opponens Pollicis Abductor Pollicis Brevis Flexor Pollicus Brevis ```

motor innervation of the radial nerve

triceps brachii the muscles in the posterior compartment of the forearm (which are primarily, but not exclusively, extensors of the wrist and fingers).

motor innervation of the ulnar nerve

Innervates the muscles of the hand (apart from the thenar muscles and two lateral lumbricals) flexor carpi ulnaris medial half of flexor digitorum profundus.

what are the roots of the cervical plexus

C1-4

the cervical plexus supplies motor innervation to what

neck postural and strap muscles | diaphragm

what roots are the brachial plexus

C5 - T1

the brachal plexus supplies motor innervation to what

muscles of the upper limb | extrinsic back muscles that move the upper limb

what are the roots of the lumbar plexus

L1 - L4

what are the roots of the sacral plexus

S1 - S4

postural back muscles get their motor supply from __ - __ motor axons via _____ ____

T2 - L3 | posterior rami

intercostal muscles get their motor supply from __ - __ motor axons via _____ ____

T2 - L3 | anterior rami

anterolateral abdominal wall muscles get their motor supply from ___ - ___ via

T2 - L3 | thoracoabdominal, subcostal, iliohypogastric and ilioinguinal nerves

what are the roots of the lumbosacral plexus

L1 - S4

what are the nerve roots of the obturator nerve

L2 - L4

elbow flexion tests what myotome and muscle

C6 | biceps brachii

ankle plantar flexion tests what myotomes

S1

UMN lesions cause (spasticity/flaccidity)

spasticity

LMN lesions cause (spasticity/flaccidity)

flaccidity

what are the roots of the sciatic nerve

L4 - S3

what supplies the erector spinae and tranversospinalis muscle groups

posterior rami of spinal nerve

phrenic nerve roots

C3 4 5 from cervical plexus

what supplies strap muscles

C1-3 from cervical plexus

knee jerk reflex

L3 L4

ankle reflex

S1 S2

biceps reflex

C5 C6

triceps reflex

C7 C8