Biology / Unit 12 Bio 2927 short lesson, about 20 seconds
"Hormones and Neurotransmitters Are Entirely Different Things"
Captions available
The idea
Treating hormones and neurotransmitters as entirely separate categories overstates a real distinction — some molecules, like norepinephrine, function as both depending how they are released.
In practice
Norepinephrine acts as a neurotransmitter at sympathetic synapses and as a circulating hormone when released by the adrenal medulla.
Where people slip
This entry states the popular assumption — Bio 2929 gives what distinguishes the two roles.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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