Reticular Formation Flashcards
TRUE/FALSE
*The reticular formation is a tightly arranged network of neurons distributed throughout the brainstem but there are no specific neural tracts or nuclei
FALSE
*The reticular formation is a LOOSELY arranged….
TRUE/FALSE
*The reticular formation is a tightly arranged network of neurons distributed throughout the brainstem but there are no specific neural tracts or nuclei
FALSE
*The reticular formation is a LOOSELY arranged….
RF runs from ______ to ______.
medulla to thalamus
Structure of RF:
*descending pathways located _____
centered in medulla
Structure of RF:
*ascending pathways located______
pons & midbrain
TRUE/FALSE
RF receives info from all sensory systems
TRUE
TRUE/FALSE
RF receives info from all sensory systems
TRUE
Motor inputs to the RF include:
- spinal cord
- cerebellum (reciprocal)
- sensorimotor cortex
Autonomic inputs include:
- cranial n. IX, X
- limbic and hypothalamic inputs (higher order mediation of brainstem autonomic functions, modulation of pain, regulation of autonomic, endocrine, behavioral functions)
Outputs from RF:
overall function from nonspecific thalamic nuclei
increase cortical neuron excitability
Outputs from RF:
overall function from nonspecific thalamic nuclei to frontal lobe
increase cortical neuron excitability
Outputs from RF:
overall function from nonspecific thalamic nuclei to specific thalamic nuclei
modifies sensory transmission directly (e.g. ability to process sensory info when you’re really tired)
TRUE/FALSE
As arousal gets into the right zone, you are able to receive sensory input.
TRUE
TRUE/FALSE
As arousal gets into the right zone, you are able to receive sensory input.
TRUE
RF and Serotonin: Raphe Nuclei
2 functions
- onset of sleep
2. pain inhibition
