ANATOMY
NEURORADIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the middle layer of the meninges, which consists of many thin fibers that connect it to the pia mater
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the collective term for the brain and spinal cord
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the second largest region of the brain, which controls your body’s sense of balance and equilibrium and coordinates movements of voluntary muscles
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transmit sensory information from organs and glands to the brain
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Detailed explanation-1: -Ascending pathway to the brain: Sensory information travels from the body to the spinal cord before reaching the brain. This information ascends upwards using first, second, and third-order neurons. First-order neurons receive impulses from skin and proprioceptors and send them to the spinal cord.
Detailed explanation-2: -The ascending tracts carry sensory information from the body, like pain, for example, up the spinal cord to the brain. Descending tracts carry motor information, like instructions to move the arm, from the brain down the spinal cord to the body.
Detailed explanation-3: -The main role of the ascending tracts of the spinal cord is to transmit somatosensory information. There are two types of afferent information conducted by the tracts: exteroceptive and proprioceptive. Exteroceptive information comes from the body’s exterior, such as pain and touch.
Detailed explanation-4: -The dorsal column pathway conveys fine touch, vibration, and proprioceptive information, whereas the spinothalamic pathway primarily conveys pain and temperature. Testing these stimuli provides information about whether these two major ascending pathways are functioning properly.