The refractory period ensures that

  1. neurotransmitters are recycled
  2. impulses travel faster
  3. the resting potential is lost
  4. impulses travel in one direction and are separate
Answer

D) impulses travel in one direction and are separate

Channels cannot reopen immediately. AS & A Level Biology · Topic 15 Control and Coordination · 15.1 Control and coordination in mammals

Biology MCQ · More A Level Biology: Control and coordination MCQs · Practise