Adrenergic Agonists · Pharmacology

What is the primary mechanism of action of Cocaine in the autonomic nervous system?

  1. Direct stimulation of Alpha-1 receptors
  2. Promotion of Norepinephrine release
  3. Inhibition of COMT and MAO
  4. Inhibition of Reuptake 1 (NET)
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Correct answer: Inhibition of Reuptake 1 (NET)

Cocaine blocks the norepinephrine transporter (NET), which is responsible for the reuptake of NE into the presynaptic terminal. This results in prolonged presence and action of NE in the synaptic cleft.

Difficulty: Medium Question 16 of 20

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