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weight control, aggression, impulsivity, and psychological depression have all been associated with
which of these is given its own classification category due to its complex effects at diff doses
in some cases repeated use of a drug leads to pharmacodynamic tolerance which is based on
reduced sensitivity of neurons
natural chemicals in the brain that produce effects similar to those of morphine and other opium derived drugs are called
drugs can affect neurotransmitters systems in 2 main ways: either by altering the availability of the neurotransmitter in the synapse or by
acting directly on the receptors
specialized structures that recognize neurotransmitter molecules and when activated cause a change in the electrical activity of the neuron are called
the neurotransmitter at the end organ of the sympathetic branch of the autonomic nervous system is
cocaine selectively blocks Na+ (sodium) channels which is the mechanism that leads to
local anesthetic effects
gated ion channels for sodium and potassium open and close in rapid succession causing the neuron to depolarize and then repolarze during each
drug molecules must be somewhat lipophilic (soluble in oil) in order to
readily cross the blood brain barrier
nonspecific effects of taking a drug are those that do not depend on its chemical activity they are also referred to as
which of the following neurotransmitters is found in most parts of the brain and is considered inhibitory
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