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Neurotransmitters are primarily associated with the

(20 pt') - question #202

Muscles can contract because they are made up of

(20 pt') - question #210

Acetylcholine, epinephrine, dopamine, and histamine are

(20 pt') - question #191

Which of the following is NOT a part of a neuron?

(20 pt') - question #189

The fastest neurons can send impulses at about __________ miles per hour.

(20 pt') - question #205