CNS-2 SPINAL CORD EXAM QUESTIONS AND ANSWERS UPDATED 2026 A COMPLETE SOLUTION BEST GRADED TO SCORE A+

CNS-2 SPINAL CORD EXAM QUESTIONS AND ANSWERS UPDATED 2026 A COMPLETE SOLUTION BEST GRADED TO SCORE A+ Cervical enlargement - answer-Expanded superior end of spinal cord with numerous nerves going to/from the upper limbs. Lumbar enlargement - answer-Expanded inferior end of spinal cord with numerous nerves supplying the lower extremities. Conus medullaris - answer-Cone-shaped tapered end of the spinal cord located at the level of the L1/L2 vertebrae. Cauda equina - answer-Lower lumbar & sacral spinal nerves traveling inferior past the conus through vertebral foramen before exiting the spinal column. Dorsal Gray horns - answer-Contains axon terminals of afferent neurons and the soma/dendrites of interneurons that relay sensory information. Ventral gray horns - answer-Contains somatic motor neuron cell bodies. Lateral Gray horns - answer-Contains preganglionic autonomic motor neuron soma. White matter - answer-Located superficial to the gray matter of the spinal cord.Dorsal White Columns - answer-Contains major ascending tracts carrying tactile and proprioceptive somatosensory information. Anterior & Lateral White Columns - answer-Contains major descending tracts regulating motor neurons and ascending tracts carrying the sense of pain, temperature, and nondiscriminative somatosensory information. Dorsal root - answer-Axons of afferent (first-order sensory) neurons entering the spinal cord. Ventral root - answer-Axons exiting the spinal cord from motor neurons in the lateral and anterior grey horns. Epidural space - answer-Region of the vertebral cavity superficial to the spinal meninges containing adipose tissue that cushions the spinal cord. Motor cortex - answer-Regions of the frontal lobe that contain upper motor neurons and initiate voluntary movement. Corticospinal tracts - answer-Descending axons of the upper motor neurons carrying motor commands to the spinal cord. Ventral grey horn - answer-Region of the spinal cord containing the soma of lower motor neurons