Testing ANS #shorts (Part D)

The video tutorial discusses the sympathetic influence on heart rate, highlighting the role of the SA node as a pacemaker. It also covers the sympathetic effect on sweating, explaining how it causes increased perspiration. Finally, the tutorial identifies acetylcholine as the neurotransmitter for all postganglionic and parasympathetic functions.

What neurotransmitter is associated with parasympathetic activity?

What is the significance of acetylcholine in the nervous system?