Reticular Formation (Quiz 4)

Question 1

What are the 3 zones of the reticular formation?

Answer 1

1) raphe nuclei midline seam
2) medial zone
3) lateral zone

Question 2

Which zone of the reticular formation has the most reticular axons that go up and down (projection neurons)?

Answer 2

medial zone

Question 3

Which zone of the reticular formation is the most involved in visceral control or cranial nerve reflexes?

Answer 3

lateral zone

Question 4

In the rostral medulla the medial zone is the _________________________ as the neurons are so large

Answer 4

gigantocellular reticular nucleus

Question 5

The raphe nuclei contain neurons that release which neurotransmitter?

Answer 5

serotonin

Question 6

Medial column nuclei have large (magnocellular) neurons and gives rise to _________________ axons

Answer 6

reticulospinal

Question 7

Nuclei comprising the lateral column generally have small, _________________, neurons. The small neurons are activated by collateral branches from sensory tracts; their axons synapse on the large neurons in the medial column. Some lateral reticular nuclei have visceral roles. While other reticular nuclei project to the cerebellum

Answer 7

parvocellular

Question 8

Reticular neurons have massive dendritic fields. Many spread __________________ to the brainstem (this is unusual for axons). They receives synaptic input from ascending sensory and descending cortical pathways

Answer 8

perpendicular