SSEPs - Rebecca Exam Questions &
Answers (Grade A+)
SSEP pathway name/function -
correct answer ✅Dorsal columns
touch and proprioception
UE/LE SSEP pathways in spinal cord -
correct answer ✅UE - fasiculus cuneatus
LE - fasiculus gracilis
SSEP pathway in brainstem -
correct answer ✅signal arrives at cuneate nuclei and gracile nuclei
in medulla
decussates in medulla in pontine medial lemniscus
the medulla oblongata is also called -
correct answer ✅metencephalon
anatomical location of the medulla -
correct answer ✅extends from lower portions of pons to a plane
passing transversely just below the decussation of the pyramids
(where spinal cord starts)
the plane corresponds with the lower margin of the foramen
magnum
,SSEPs - Rebecca Exam Questions &
Answers (Grade A+)
SSEP pathway ascents to the contralateral cortex through the
__________ -
correct answer ✅internal capsule
what type of information does the posterior horn receive -
correct answer ✅touch and sensation
what lies in the ventral horn -
correct answer ✅alpha motor neurons
blood supply to the spinal cord branches from the _________
arteries and 10 ____________ arteries
of note in what type of surgery? -
correct answer ✅Vertebral
medullary
abdominal surgery
ASA -
correct answer ✅supplies anterior 2/3rds of spinal cord
,SSEPs - Rebecca Exam Questions &
Answers (Grade A+)
MEP pathway
PSA -
correct answer ✅(2) supplies posterior 1/3 of spinal cord
SSEP pathway
watershed area -
correct answer ✅regions that receive dual blood supply from the
most distal branches of two large arteries
what is the ischemic watershed zone of the spinal cord (and
therefor the area at greatest risk of injury) -
correct answer ✅mid thoracic gray matter
name the vascular supply of each UE SSEP obligate peak -
correct answer ✅EP - brachial artery
N13 - PSA
P14, N18 - PCA
Left N20 - right MCA
Right N20 - left MCA
, SSEPs - Rebecca Exam Questions &
Answers (Grade A+)
name the vascular supply of each LE SSEP obligate pea -
correct answer ✅PF - popliteal artery (femoral)
LP/N22 - PSA
P31, N34 - PCA, Pcomm
P37 - ACA
location of posterior longitudinal ligament -
correct answer ✅behind vertebral body
Far field obligate peaks (aka subcortical and brainstem/thalamus) -
correct answer ✅BAEP - wave III, V
P14, N18
P31, N34
what is meant by near and far field potentials -
correct answer ✅near field = generators close to recording
electrodes
far field = generators far from recording electrodes (brainstem)
far field analagous peaks -
correct answer ✅N18 = N34 (brainstem/thalamic)
Answers (Grade A+)
SSEP pathway name/function -
correct answer ✅Dorsal columns
touch and proprioception
UE/LE SSEP pathways in spinal cord -
correct answer ✅UE - fasiculus cuneatus
LE - fasiculus gracilis
SSEP pathway in brainstem -
correct answer ✅signal arrives at cuneate nuclei and gracile nuclei
in medulla
decussates in medulla in pontine medial lemniscus
the medulla oblongata is also called -
correct answer ✅metencephalon
anatomical location of the medulla -
correct answer ✅extends from lower portions of pons to a plane
passing transversely just below the decussation of the pyramids
(where spinal cord starts)
the plane corresponds with the lower margin of the foramen
magnum
,SSEPs - Rebecca Exam Questions &
Answers (Grade A+)
SSEP pathway ascents to the contralateral cortex through the
__________ -
correct answer ✅internal capsule
what type of information does the posterior horn receive -
correct answer ✅touch and sensation
what lies in the ventral horn -
correct answer ✅alpha motor neurons
blood supply to the spinal cord branches from the _________
arteries and 10 ____________ arteries
of note in what type of surgery? -
correct answer ✅Vertebral
medullary
abdominal surgery
ASA -
correct answer ✅supplies anterior 2/3rds of spinal cord
,SSEPs - Rebecca Exam Questions &
Answers (Grade A+)
MEP pathway
PSA -
correct answer ✅(2) supplies posterior 1/3 of spinal cord
SSEP pathway
watershed area -
correct answer ✅regions that receive dual blood supply from the
most distal branches of two large arteries
what is the ischemic watershed zone of the spinal cord (and
therefor the area at greatest risk of injury) -
correct answer ✅mid thoracic gray matter
name the vascular supply of each UE SSEP obligate peak -
correct answer ✅EP - brachial artery
N13 - PSA
P14, N18 - PCA
Left N20 - right MCA
Right N20 - left MCA
, SSEPs - Rebecca Exam Questions &
Answers (Grade A+)
name the vascular supply of each LE SSEP obligate pea -
correct answer ✅PF - popliteal artery (femoral)
LP/N22 - PSA
P31, N34 - PCA, Pcomm
P37 - ACA
location of posterior longitudinal ligament -
correct answer ✅behind vertebral body
Far field obligate peaks (aka subcortical and brainstem/thalamus) -
correct answer ✅BAEP - wave III, V
P14, N18
P31, N34
what is meant by near and far field potentials -
correct answer ✅near field = generators close to recording
electrodes
far field = generators far from recording electrodes (brainstem)
far field analagous peaks -
correct answer ✅N18 = N34 (brainstem/thalamic)
