Assertion: parasympathetic nervous system's neurotransmitter | /r/ObjectUse | used by the psns
Facets:
Source sentences:
text: As that cited study mentions, rats who exercise see higher levels of acetylcholine in their hearts compared with control rats (non-exercising rats), which further proves that parasympathetic activity was increased (as that’s the neurotransmitter used by the PSNS).