CNIM - ABRET Practice Exam 2024 Graded A+ Questions With 100% Correct Answers.

CNIM - ABRET Practice Exam 2024 Graded A+ Questions With 100% Correct 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 CNIM - ABRET Practice Exam 2024 Graded A+ Questions With 100% Correct Answers. 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.