Philosophy â A definition: Philosophy. Philosophy is the discipline concerned with questions of how one should live (ethics); what sorts of things exist and what are their essential natures (metaphysics); what counts as genuine knowledge (epistemology); and what are the correct principles of reasoning (logic).hilosophy is the discipline concerned with questions of how one should live (ethics); what sorts of things exist and what are their essential natures (metaphysics); what counts as genuine knowledge (epistemology); and what are the correct principles of reasoning (logic).
Agonists are chemical substances that mimic or enhance the effects of neurotransmitters on the receptor sites of the next cell. If the neurotransmitter was excitatory, the effect of the agonist would be to increase the inhibitory. the agonist blockst the inhibitory effect.Antagonist drugs are chemical substances that block or reduce a cell's response to the action of other neurotransmitters.If the neurotransmitter is inhibitory, the antagonist would increase the activity of the cell.ntagonist drugs are chemical substances that block or reduce a cell's response to the action of other neurotransmitters. If the neurotransmitter is inhibitory, the antagonist would increase the activity of the cell.
An antagonist is an agent that binds to a receptor but does not elicit the response that the neurotransmitter or an agonist would cause. The antagonist blocks the receptor and prevemts activation by neurotransmitters or other drugs.So in the case of opiates, lets look at the opiate agonist, morphine.When morphine enters the brain, it binds to opiate receptors and activates them. This binding is what produces the effects of Morphine.o in the case of opiates, lets look at the opiate agonist, morphine. When morphine enters the brain, it binds to opiate receptors and activates them. This binding is what produces the effects of Morphine.