NERVOUS SYSTEM SPECIAL SENSE
SPINALCORD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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External part
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Internal part
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Item 1, 2 is correct.
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no right
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Detailed explanation-1: -A transverse section of the adult spinal cord shows white matter in the periphery, gray matter inside, and a tiny central canal filled with CSF at its center. Surrounding the canal is a single layer of cells, the ependymal layer.
Detailed explanation-2: -The spinal cord is composed of gray and white matter, appearing in a cross-section as H-shaped gray matter surrounded by white matter. The gray matter consists of the cell bodies of motor and sensory neurons, interneurons, and neuropils (neuroglia cells and mostly unmyelinated axons).
Detailed explanation-3: -The thoracic spine has 12 nerve roots (T1 to T12) on each side of the spine that branch from the spinal cord and control motor and sensory signals mostly for the upper back, chest, and abdomen. The thoracic spine (highlighted) spans the upper and mid-back. It includes twelve vertebrae named T1 through T12.
Detailed explanation-4: -Cervical (neck). Thoracic (chest). Lumbar (lower back). 10-Jul-2021