PSYB65H3 Chapter Notes - Chapter 5-6: Myelin, Phospholipid, Autonomic Nervous System
Document Summary
United states because of its similarity to adrenalin, a name taken as a trademark by park, davis and company). In doing so, he discovered a new class of chemicals, the neurotransmitters that carry messages from one neuron to the next. And, rather than just two complementary chemicals taking part in this communication, neuroscientists now know that more than a hundred may act as neurotransmitters. Groups of neurons that release a chemical neurotransmitter of a certain type are named after that neurotransmitter. For example, neurons that release ach are called acetylcholine neurons or cholinergic neurons, and neurons that release ep are called epinephrine neurons. In mammals, a closely related neurotransmitter, norepinephrine (ne) also called noradrenaline (na) replaces ep as the excitatory neurotransmitter in noradrenergic neurons. At about the time that otto loewi was conducting his heart-rate experiments, physiologist walter. Cannon demonstrated that cholinergic neurons and noradrenergic neurons play complementary roles in controlling many bodily functions in the autonomic nervous system.
