such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities
such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities
such as vasodilation and increased heart beat receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities
such as vasodilation and increased heart beat receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities