ABRET CNIM STUDY GUIDE 2026 VERIFIED
Q&A MASTER SOLUTION PACK
◉ 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.
Q&A MASTER SOLUTION PACK
◉ 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.
