Local anesthetic molecules have a greater affinity for protein receptor sites within the nerve membrane compared to calcium ions; therefore, they displace the calcium ion and block impulse transmission.

Question

Quizplus · Accepted Answer

Local anesthetics work by binding to specific sites on sodium channels within the nerve membrane, preventing sodium ions from entering the cell, which blocks nerve impulse transmission. They have a greater affinity for these sites than calcium ions, which helps them displace calcium and exert their effect.

Local Anesthetic Molecules Have a Greater Affinity for Protein Receptor