NERVOUS SYSTEM SPECIAL SENSE
SPINALCORD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Unmyelinated axons, neuron cell bodies
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Myelinated axons, sensory receptors
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Myelinated axons, neuron cell bodies
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Myelinated neurotransmitters, axons
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Detailed explanation-1: -A cross section of the spinal cord reveals white matter arranged around a butterfly-shaped area of gray matter. The white matter consists of myelinated fibres, or axons, that form nerve tracts ascending to and descending from the brain. The white matter is grouped into discrete sectors called funiculi.
Detailed explanation-2: -White matter is composed of bundles of myelinated nerve cell processes (or axons). The axons connect various grey matter areas (the locations of nerve cell bodies) of the brain to each other and carry nerve impulses between neurons.
Detailed explanation-3: -The ventral root (motor root) of each spinal nerve consists of axons from motor neurons, whose cell bodies are found within the grey matter of the spinal cord.
Detailed explanation-4: -The spinal ganglia or dorsal root ganglia contain the cell bodies of sensory neurons entering the cord at that region.