Neuro Screen Flashcards
What is sensory integration?
The ability of the brain to organize, interpret and use sensory info
What is somatosensation (somatosensory)?
Sensation received from skin and musculoskeletal system
How does sensory info travel to sensory cortex?
Peripheral receptors -> through peripheral nerves -> nerve roots -> SC -> brain stem -> thalamus -> sensory cortex
What sensations are carried by small unmyelinated fibers?
Pain and temp
What sensations are carried by large myelinated fibers?
Vibration and proprioception
What does normal sensation allow a pt to detect?
Pain and temp in whichever area tested
Vibration at tips of fingers and toes
Joint position at distal joints
What causes sensory loss?
SC lesions
Nerve root lesion
Peripheral neuropathy
Peripheral nerve lesion
C1/C2 Myotomes
Neck flexion/extension
C3 Myotome
Neck lateral flexion
C4 myotome
Shoulder elevation
C5 myotome
Shoulder ABD
C6 myotome
Elbow flexion, wrist extension
C7 myotome
Elbow extension, wrist flexion
C8 myotome
Finger flexion
T1 myotome
Finger ABD
L2 myotome
Hip flexion
L3 myotome
Knee extension
L4 myotome
Ankle DF
L5 myotome
Great toe ext
S1 myotome
Ankle PF, EV and hip extension
S2 myotome
Knee flexion
S3-S4 myotome
Anal wink
What is sporadic sensory loss? Ex of condition
Systemic pathology that produces unpredictable or scattered patterns of sensory loss
Ex. MS
What is peripheral neuropathy? What body parts affected “first”? Pattern?
-Loss, altered, or abnormal sensation that starts at periphery and spreads proximally
-toes and feet
-glove and stocking
