channels,which is the mechanism that leads to
A)CNS stimulation.
B)increased heart rate.
C)local anesthetic effects.
D)cocaine dependence.

Question

Quizplus · Accepted Answer

Local anesthetic effects are caused by the blocking of sodium channels, which prevents the generation of action potentials, leading to a loss of sensation in the affected area.

Answer: A and B
 CNS stimulation and increased heart rate are also caused by the blocking of sodium channels. When sodium channels are blocked, the excitation of neurons is prolonged, leading to increased release of neurotransmitters such as dopamine and norepinephrine, which can both stimulate the CNS and increase heart rate.

Answer: D
 Cocaine dependence is not solely caused by the blocking of sodium channels, but by a complex interaction of factors including changes in gene expression, alterations in signaling pathways, and changes in neural circuits involved in reward and motivation. However, the blocking of sodium channels does play a role in the addictive properties of cocaine by enhancing dopamine signaling in key brain regions.

Channels,which Is the Mechanism That Leads to