Best batmotropica, adjective feminine of batmotropismo, term medical that means excitability or capacity of them neurons and of them cells muscle of power excite is to start a process as the transmission of the impulse nervous or the contraction of the heart. This function batmotropica is performed, according to the law of all or nothing, when the stimuli are within a threshold of intensity. ( of bathmos bathmou, scale, grade and trope tropes change, evolution ).