Questions: Which of the following carries motor impulses through the spinal cord? Ascending tracts Descending tracts Gray matter Nerves

Which of the following carries motor impulses through the spinal cord? Ascending tracts Descending tracts Gray matter Nerves
Transcript text: Which of the following carries motor impulses through the spinal cord? Ascending tracts Descending tracts Gray matter Nerves
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Solution

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The answer is the second one: Descending tracts.

Explanation for each option:

  • Ascending tracts: These tracts carry sensory information from the body to the brain. They are responsible for transmitting sensory impulses, not motor impulses.

  • Descending tracts: These tracts carry motor impulses from the brain down through the spinal cord to the muscles and glands. They are responsible for transmitting motor commands from the brain to the body.

  • Gray matter: This part of the spinal cord contains neuron cell bodies and is involved in processing information. It does not specifically carry motor impulses through the spinal cord.

  • Nerves: While nerves can carry motor impulses, they are not specific to the spinal cord. Nerves are bundles of axons that can be found throughout the body, including outside the spinal cord.

In summary, descending tracts are responsible for carrying motor impulses through the spinal cord.

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