Brainstem Flashcards

1
Q

Where is the brainstem located?

A
  • Continuous rostrally with diencephalon

- continuous caudally with spinal cord

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2
Q

Which two cranial nerves do not attach to the brainstem?

A
  • CN I: attaches to Telencephalon

- CN II: attaches to Diencephalon

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3
Q

What are the two regions of the brainstem?

A
  1. Tegmental Area

2. Basilar Area

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4
Q

What is in the Tegmental Area?

A
  • Nuclei

- Sensory (ascending) tracts

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5
Q

What is in the Basilar Area?

A
  • Nuclei

- Motor (descending) tracts

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6
Q

How are tracts in the brainstem usually named?

A

Usually named for their origin and termination.

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7
Q

What are the functions of the brainstem?

A
  1. Acts as the target or source for the cranial nerves that deal primarily with sensory and motor function in the head and neck.
  2. Provides a “throughway” for all the ascending sensory tracts, descending motor tracts and local pathways.
  3. Involved in integrative (modulatory) functions such as: complex motor patterns, maintenance of homeostasis, and regulating the level of alertness.
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