SSEP Flashcards
SSEPs follow an Ascending/Sensory pathway, called the _____ Pathway.
Dorsal Column
Flexion
Bending
decrease angle
Extension
Straightening
increase angle
Abduction
Lateral movement of the limbs away from the median
Adduction
Movement of a limb or eye toward the median
Pronantion
Palm/stomach down
Supination
Palm/stomach up
The DRG contains cell bodies of stimulated _____
Peripheral sensory axons
_____ contains axons carrying evoked signals from lower extremities
Fasciculus Gracilis
_____ contains axons carrying evoked signals from upper extremities
Fasciculus Cuneatus
Fasciculus Cuneatus starts and ascends at _____
T6
Anterior CST passes through the _____
Anterior Funiculus
Lateral CST passes through the _____
Lateral Funiculus
The cervical spinal cord does not have a _____ horn
lateral
The end of the spinal cord is called the _____
conus medularis
The collection of spinal roots at the end of the spinal cord is called the _____
cauda equina
The brainstem consists of the _____, _____, and _____.
Midbrain
Pons
Medulla
1st order neurons synapse at the _____.
Caudal medulla
1st order synapse for lower extremities is the _____
nucleus gracilis
1st order synapse for upper extremities is the _____
nucleus cuneatus
NC and NG decussate via the _____
internal arcuate fibers
Internal arcuate fibers from the NC and NG for the _____ on the contralateral side
medial lemniscus
The medial lemniscal tracts ascend to the _____
VPL of the thalamus
The _____ is the site of the 2nd synapse
VPL of the thalamus
From the VPL, axons pass through the _____ to S1
posterior limb of the internal capsule
_____ is the site of the 3rd synapse
S1, Area 3b of layer IV
Surface electrodes use _____ as a binding agent
Hydrogel on Ag/Ag-Cl
Surface electrodes should be placed _____cm apart
2-3cm
The anode (+) is always placed _____
distal
The cathode (-) is always placed _____
proximal
Current moves from the _____ to the _____
positive (anode)
cathode (negative)
The cathode is where _____ occurs
depolarization
the anode is where _____ occurs
hyperpolarization
The resting membrane potential is at _____
-70mV
If the cathode/anode are placed too close together, you’ll get a _____ amplitude
small
If the cathode/anode are placed too far apart, you’ll get a _____
large stimulus artifact
The stim boxes are _____ current stimulators.
constant
If current is fixed, the machine must provide a higher _____ to compensate for higher resistance. higher _____ = larger _____.
voltage
voltage
stimulus artifact
Cathode placement of median nerve stimulation is between the tendons of the _____ and _____
palmaris longus
flexor carpi radialis
An alternative site for median stimulation is _____, at the _____.
medial to the biceps brachii tendon
cubital fossa
Ulnar nerve stimulation is between the _____ and _____.
flexor carpi ulnaris
ulnar artery
proximal wrist crease
An alternative site for ulnar nerve stimulation is the _____.
medial epicondyle of the humerus
Radial nerve stimulation is just proximal to the _____
lateral epicondyl at the elbow
Posterior tibial nerve stimulation is midway between the _____ and _____.
medial malleolus
achilles tendon
Alternative PTN stimulation is at the _____
popliteal fossa
Peroneal nerve stimulation at the _____, medial to the tendon of the _____.
knee
biceps femoris
Peroneal nerve alternative sites are _____ and _____
medial/lateral malleolus
popliteal space
Femoral nerve stimulation _____
lateral to the femoral artery
Ulnar nerve should be used if at level of _____
5th cervical vertebrae or below
vertebral column is _____ bones
26
_____ cervical vertibrae
7
_____ thoracic vertebrae
12
_____ lumbar vertebrae
5
_____ sacral verebrae
5
_____ coccygeal vertebrae
4
cervical vertebrae have a _____ foramen for the _____.
transverse
vertebral arteries
Cervical vertebrae (-C_) have a _____ spinous process
bifid
cervical plexus is at
c1-4
brachial plexus is at
c5-8
t1
lumbar plexus is at
l1-4
sacral plexus is at
l4-5
s1-4
supraclavicular nerve is at
c3-4
transverse cutaneous nerve is at
c2-3
greater auricular nerve is at
c2-3
