The autonomic system runs on two chemicals. They are acetylcholine and norepinephrine. But the effect depends on the receptor they land on. Tap each receptor.
Nicotinic
Chemical messengers & receptorscholinergic vs adrenergic
The receptors
📷 Reference image
A real labeled figure. Compare it with the interactive above.
Autonomic Neurotransmitters — OpenStax, CC BY 3.0 (via Wikimedia Commons)
