Reticular activating system Flashcards Preview

Block 5 module 3 COPY > Reticular activating system > Flashcards

Flashcards in Reticular activating system Deck (12):
1

State of patient’s awareness of self and
environment and his responsiveness to
external stimulation and inner need

consciousness

2

arousability:RAS
responsiveness:

cerebral cortex

3

excitatory areas

mesencephalon
pons

4

inhibitory areas

medulla

5

the thalamus is the relay center of almost all

sensory input

6

the ascending reticular activating system receives fibers from ________ via long __________ tracts

sensory pathways; ascending spinal

7

lesions below the brainstem will not really produce unconsciousness due to

other input available through trigeminal nerve

8

lesions within and above the bs would result to

unconsciousness

9

locus coeruleus

norepinephrine system

10

substantia nigra

dopamine system

11

raphe nucleus

serotonin system

12

gigantocellular neurons of reticular excitatory area

acetylcholine system