challenge: What is the effect of anabaseine binding to nicotinic acetylcholine receptors?
  
  A. Depolarization of neurons and inhibition of neurotransmitter release
  B. No effect on neurons and neurotransmitter release
  C. Hyperpolarization of neurons and inhibition of neurotransmitter release
  D. Depolarization of neurons and induction of dopamine and norepinephrine release
  Answer: 