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.
Definition of AGONIST. 1. : one that is engaged in a struggle. 2. [from antagonist] a: a muscle that is controlled by the action of an antagonist with which it is paired.ADVERTISEMENT.edical Definition of AGONIST. 1. : a muscle that on contracting is automatically checked and controlled by the opposing simultaneous contraction of another muscleâcalled also agonist muscle, prime mover; compare antagonist a, synergist 2.