TLS Online TPP Program

#Question id: 11010


Which of the following best explains how sympathetic stimulation affects the heart?

#7. System Physiology – Animal
  1. Permeability of the S-A node to sodium decreases
  2. Permeability of the A-V node to sodium decreases
  3. Permeability of the S-A node to potassium increases
  4. There is an increased rate of upward drift of the resting membrane potential of the S-A node