Which two structures form the central nervous system?, Brain and spinal cord, Heart and lungs, Muscles and bones, Which ion enters a typical neuron during the depolarisation phase of an action potential?, Potassium (K), Sodium (Na), Chloride (Cl), Which neurotransmitter activates skeletal muscles at the neuromuscular junction?, Insulin, Norepinephrine, Acetylcholine, Which drug category can alter sensory perception?, Hallucinogens, Antidepressants only, All medicines equally, Which of the following is an example of a stimulant?, Caffeine, Alcohol, LSD, Psilocybin

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