What was the first evidence reported by T. R. Elliott suggesting that synapses operate chemically?
A) Adrenaline mimics the effects of the parasympathetic nervous system.
B) Adrenaline decreases heart rate.
C) Adrenaline produces a hormone which decreases heart rate.
D) Adrenaline mimics the effects of the sympathetic nervous system.

Question

Quizplus · Accepted Answer

T. R. Elliott's first evidence suggesting that synapses operate chemically was based on his observation that adrenaline mimics the effects of the sympathetic nervous system. This suggested that chemicals - specifically neurotransmitters - were involved in the transmission of nerve impulses across the synapse.

What Was the First Evidence Reported by T