Important to memorize/know

Cards (2)

  • Pacemaker potentials:
    1. Ca2+ dependent K+ channels close, depolarization to threshold
    2. Voltage-gated Ca2+ channels open, AP occurs
    3. Ca2+ dependent K+ channels open, repolarization
    4. Voltage-gated Ca2+ channels close
  • Which organ/organ system has both sympathetic and parasympathetic innervation?
    SA and AV nodes