Reticular System Physiology

1. Where is serotonin secreted from?

• Midline Raphe Nucleus

2. Which of the following statements is NOT TRUE about the reticular activating system?

• B. Decreases spinal reflexes

3. Which region can induce sleep when electrically stimulated?

• D. Nucleus of the solitary tract

4. What hormone is secreted from the locus coeruleus?

• Norepinephrine

5. What will happen if the brainstem is cut above the point where the V nerve enters the pons?

• E. Frequent coma

6. What structure, if destroyed, will cause insomnia?

• D. Midline Raphe Nucleus

7. What neurotransmitter is secreted from the magnocellular nucleus?

• Acetylcholine

8. Which statement is true about the inhibitory reticular system?

• Decreases antigravity muscle tone when stimulated

9. What are the phenomena when sleeping?

• Decreased muscle tone, decreased total body energy metabolism

10. Damage to which part will cause an organism to be awake and unable to sleep?

• B. Midline Raphe Nucleus