3 Questions
Which of the following statements is true regarding the location of the synapse of the 1st and 2nd order neurons of the posterior column-medial lemniscal pathway?
It is located in the nucleus gracilis.
Which of the following statements is true regarding the trigeminal nerve?
It contains mainly sensory fibers.
Which of the following statements is true regarding the anterolateral white column in this level?
It is unchanged in this level.
Study Notes
- The level of decussation of pyramids is at the primary pyramidal decussation.
- The central canal is located anterior to the primary pyramidal decussation.
- The nucleus gracilis and nucleus cuneatus are located posterior to the central canal.
- The synapse of the 1st and 2nd order neurons of the posterior column-medial lemniscal pathway occurs in this area.
- The spinal nucleus of trigeminal nerve is located posterolateral to the central canal.
- The trigeminal nerve is a mixed nerve containing mainly sensory fibers.
- The spinal nucleus of trigeminal nerve is responsible for pain, temperature, and crude touch sensation for the head and neck area.
- Other cranial nerves can relay some sensation to the spinal nucleus of trigeminal nerve.
- The trigeminal nerve originates mainly from the pons.
- The anterolateral white column remains unchanged in this level.
Test your knowledge on the anatomy and physiology of the spinal cord with this quiz! From the location of the primary pyramidal decussation to the function of the spinal nucleus of trigeminal nerve, this quiz will challenge your understanding of the intricate details of the spinal cord. Sharpen your knowledge of the posterior column-medial lemniscal pathway and other cranial nerves that relay sensation to the trigeminal nerve. Don't forget to keep an eye out for the unchanged anterolateral
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