ANATOMY - peripheral nerves and spinal nerves Flashcards
knee extension
L3 L4 (kick the door)
knee flexion
L5 - S1
hip flexion
L2 L3
hip extension
L4 L5
foot dorsiflexion
L4 L5
foot plantarflexion
S1 S2 (buckle my shoe)
foot eversion
L4
foot inversion
L5 S1
motor evaluation of C5
shoulder abduction
biceps
deltoid
motor evaluation of C6
elbow flexion
biceps
wrist extensors
motor evaluation of C7
elbow extension - triceps
wrist flexors
finger extension
motor evaluation of C8
finger flexion - flexion digitorum superficialis
motor evaluation of T1
interossei - spreading out fingers and bringing back in
sensory evaluation of C5
badge patch
sensory evaluation of C6
lateral aspect of forearm and thumb
sensory evaluation of C7
middle finger
sensory evaluation of C8
little finger
sensory evaluation of T1
medial aspect of forearm arm
what nerve, myotome and muscle is tested in:
shoulder abduction
deltoid
axillary nerve
C5
what nerve, myotome and muscle is tested in:
elbow extension
tricep
radial nerve
C7
what nerve, myotome and muscle is tested in:
finger extension
extensor digitorum
posterior interosseus (radial)
C7
what nerve, myotome and muscle is tested in:
index finger abduction
1st dorsal interosseus
ulnar
T1
what nerve, myotome and muscle is tested in:
hip flexion
iliopsoas
femoral
L1 L2
what nerve, myotome and muscle is tested in:
knee flexion
hamstrings
sciatic
S1
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