Reticular Formation Notes

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This is an extract of our Reticular Formation document, which we sell as part of our Neurology Notes collection written by the top tier of Bristol University students.

The following is a more accessble plain text extract of the PDF sample above, taken from our Neurology Notes. Due to the challenges of extracting text from PDFs, it will have odd formatting:

Lecture 46 Reticular Formation

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Location o Midbrain- Mesencephalic RF (neurons scattered around here) o Pons- Pontine RF (adjacent to 4th ventricle) o Medulla- Medullary RF Afferent/Efferent o Afferent
? Sensory pathways (optic, auditory, olfactory)
? Thalamus
? Cerebellum
? Corpus striatum
? SC (touch, pain, temperature)
? Cortex o Efferent
? Cortex (main)
? Cerebellum
? Substantia nigra; Red nucleus
? Tectum
? SC
? Thalamus/hypothalamus Connections o Local projections
? Local-circuit interneurons
? Functions

* Reflexice and stereotyped behaviours of head and face o Chewing, swallowing, vomiting o Respiratory (coughing, hiccups, sneezing) o o

CVS responses (heart rate, BP)

Long projection systemsAscending to cortex (reticular activating system)

*Functions o

Sleep-wake cycle

o

Alertness and consciousness

o

Wakefulness

Descending to spinal cord

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Functions o

Posture and ANS activity

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Sensory (pain) anaesthetics)

&

motor

modulation

(target

for

o

Info from hypothalamus (connected to endocrine systems)

Functions o

o

*

o

SENSORY & MOTOR FUNCTIONSGating and modulating info transferOrganising, co-ordinating and regulating reflexesReticulospinal tracts

AUTONOMIC AND VITAL FUNCTIONSRegulations of ANS (input on everything innervated by ANS)CVS regulationControl respiration

Neurotransmitter systems o

o

Specific group of neurotransmitters

CNS

neuronsNA; A; DA; 5HT; Histamine= MAACh

use

Cell bodies can be localised and axons traced

monoamines

and

ACh

as

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