Ascending and Descending Tracts of the Spinal Cord
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Questions and Answers

Which part of the brain is connected to the spinal cord?

  • Cerebrum
  • Brainstem (correct)
  • Hippocampus
  • Cerebellum

Where does the spinal cord begin and end in an adult?

  • Foramen magnum to L2/L3
  • L2/L3 to L4/L5
  • L1 to L2/L3
  • Foramen magnum to L1 (correct)

What are the groups of nerve fibers going towards and coming from the brain called?

  • Peripheral nerves
  • Spinal nerves
  • Cranial nerves
  • Ascending and descending tracts (correct)

Where does the spinal cord end in a growing child?

<p>L2 (B)</p> Signup and view all the answers

What is the primary function of the spinal cord?

<p>Information exchange (B)</p> Signup and view all the answers

Flashcards

Brainstem

The lowest part of the brain that connects to the spinal cord. It controls essential functions like breathing, heart rate, and blood pressure.

Where does the spinal cord begin and end?

The spinal cord starts at the bottom of the skull and ends at the first lumbar vertebra (L1).

Ascending and descending tracts

Bundles of nerve fibers that carry information to and from the brain.

Where does the spinal cord end in a growing child?

In a growing child, the spinal cord ends at the second lumbar vertebra (L2).

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What is the function of the spinal cord?

It acts as a communication pathway between the brain and the body, allowing information to be exchanged.

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Study Notes

Brain and Spinal Cord Connection

  • The spinal cord is connected to the brain's base, specifically the brainstem.

Spinal Cord Structure

  • In an adult, the spinal cord begins at the foramen magnum (base of the brain) and ends at the level of the second lumbar vertebra (L2).
  • The spinal cord is longer in children and grows shorter relatively to the vertebral column as they grow.

Nerve Fibers

  • Groups of nerve fibers going towards the brain are called sensory or ascending tracts.
  • Groups of nerve fibers coming from the brain are called motor or descending tracts.

Spinal Cord Development

  • In a growing child, the spinal cord ends at a lower level, around the level of the third or fourth lumbar vertebra (L3-L4).

Spinal Cord Function

  • The primary function of the spinal cord is to transmit messages between the brain and the rest of the body, integrating sensory information and facilitating motor responses.

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Test your knowledge on the ascending and descending tracts of the spinal cord with this quiz. Learn about the connections between the brain and extracranial structures.

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