Selecciona la opción correcta de los menús desplegables para completar el texto.
The auto-rhythmic cells of the SA node set the pace of the heart at ( 70-80, 80-100, 100-120 ) BPM, in the presence of parasympathetic tone. These cells have the fastest rhythm at controlling heart rate. The cells of the AV node are ( slower, faster ) and set a rhythm of 40-( 60BPM, 100BPM ).