CNRN 2026|QUESTIONS AND 100% CORRECT ANSWERS|LATEST !!!!2026|GRADED A+| (EXAM READY)

ANSWERS|LATEST !!!!2026|GRADED A+| (EXAM



Neurotransmitters - ANSWER Chemical substances found in the CNS that excite,
inhibit, or modify the response of another cerebral cell(s)



Dendrites - ANSWER Direct impulses toward the cell body



Axon - ANSWER Carries impulses away from the cell body



Amines: Acetylcholine (ACh) - ANSWER Usually excitatory

Inhibitory effect on some of parasympathetic nervous system

Chief transmitter of the PNS



Amines: Serotonin (5-HT) - ANSWER Controls body heat, hunger, behavior and sleep.

Inhibitor of pain pathway cord; helps to control mood and sleep



Cathecholamines: Dopamine (DA) - ANSWER Affects control of behavior and fine
movement

Usually inhibitory



Cathecholamines: Norepinephrine (NE) - ANSWER Chief transmitter of SNS

Usually excitatory can be inhibitory



A.A.: Gamma-aminobutyric acid (GABA) - ANSWER Excitatory


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, A.A.: Glutamic acid - ANSWER Excitatory



Glycine - ANSWER Inhibitory



Substance P - ANSWER Excitatory



Polypeptides: Enkephalin - ANSWER Excitatory to systems that inhibit pain; binds to
the same receptors in the CNS that bind opiates drugs



Polypeptides: Endorphin - ANSWER Binds to opiate receptors in the brain and
pituitary gland; excitatory to systems that inhibit pain



Epidural space - ANSWER Located between the skull & dura mater



Subdural space - ANSWER Located between the inner dura mater & the arachnoid
layer



Subarachnoid space - ANSWER Located between the arachnoid & pia mater layers.

Contains CSF



What is the specific gravity of CSF? - ANSWER 1.007



Amount of CSF in adults? - ANSWER 125-150ml



Choroid plexus - ANSWER A collection of blood vessels covered by a thin coating of
ependymal cells



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