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CNIM - ABRET Practice Exam Questions and answers
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CNIM - ABRET Practice Exam Questions and answers
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CNIM - ABRET Practice ExamQuestions and answers
Cavities inside the skull - answer Anterior/middle/posterior fossa
Cranial bones - answer Frontal, occipital, sphenoid, ethmoid
(unpaired). Parietal & temporal (paired).
Mental protuberance - answer chin bone
MCA supply of the cerebral cortex - answer Hand +
face/mouth/auditory
Cranial nerves - answer -12 pairs (Mixed fibers:
sensory/motor/both).
-Emerge @ irregular intervals from the brain.
-Nuclei displacement:
Motor = medial Sensory = lateral
Meckle's Cave - answer Depression in the medial middle fossa
where CN V ganglion sits
Low frequency sounds - answer @ apex of cochlea
Area of spine w/ small pedicles, long spinous process, large inter-
vertebral foramen - answer Thoracic
Neuroforamen - answer Opening w/in the spinal canal for nerve
roots to enter the SC
,Firm outer layer of the disc - answer Annulus fibrosis
Syrinx - answer Fluid-filled cavity @ center of the SC
Spinal cord ends @ the level btwn: - answer L1-L2 vertebrae
(Conus Medullaris)
Blood supply to the SC consists of: - answer 1 ASA for both MEP
tracts
Hydrostatic pressure - answer Depends on body position
Structural functional anatomy may be altered by: - answer
Previous lesions, current, plasticity, pressure
Glia cell - answer Comes from the Greek word "glue"
Large diameter nerve fiber (vs. small diameter) - answer -Recruited
1st w/ INC'd stim intensity
-Higher conduction velocity
-More vulnerable to hypoxia & pressure Δ's
Synaptic transmission, and/or Δ's in thalamocortical projections,
produce - answer Cortical potentials
Peripheral nerve sensitivity - answer Least sensitive to injury
(more sensitive = SC grey/white mater, cortical grey matter)
,Cavernous angiomas - answer Multi-lobulated lesions containing
hemorrhage
Geriatric population: prevalence of temporal bone hyperostosis -
answer 10-15%
Presbycusis - answer High freq hearing loss; gradually occurs in
older individuals
Most commonly injured CN - answer Facial nerve (VII)
Burst fracture - answer -Break in the vertebra
-Failure of anterior & middle vertebral columns
-Caused by violent compressive event (fall, MVA)
Excessive neck flexion in sitting position - answer Quadraparesis
(due to ischemia in upper T-spine)
Lhermittes Sign - answer Shocking sensation that occurs
throughout the body during neck flexion
Central Cord Syndrome (CCS) - answer -Sacral sparing
-Loss of sensory/motor fx @ level of injury
-Disruption of grey matter
(+) Babinski Sign could indicate - answer -severe [UMN] SC trauma
-abnml PTN SSEPs
, Hoffman's Reflex (1918) - answer Palmar flexion of the thumb when
the distal phalanx of the middle finger (of the same hand) is rapidly
stroked
A nml curve of the lumbar spine taking place @ 1-2 y/o - answer
Kyphosis
Scoliosis progression in peds - answer More likely in girls > boys
Apraxia - answer Difficulty w/ skilled mvmnts
Neurapraxia - answer PNS disorder: blockage of sensory + motor
nerve conduction (w/o axonal damage)
INC venous pressure leads to - answer -venous congestion; DEC
drainage of nml veins; chronic hypoxia
-NOT hypotension
common source of air embolism introduction into the blood supply -
answer Superior sagittal sinus
MAC is approximated by the effect of anesthesia on - answer H-
reflex (mvmnt when stimulated)
Sevo/Des/N2O - answer DO NOT act on the same neuronal
receptors
On an equi-MAC basis (w/ equivalent doses of anes), which has the
greatest effect on MEPs of recorded mm's? - answer N2O
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