Question

Some neurotoxins work essentially the same way as some local anesthetics, which is to

A) inactivate the enzyme that destroys the neurotransmitter only.
B) bind to Na+ channels and inactivate them only.
C) prevent depolarization by blocking Na+ entry into the cell only.
D) inactivate the enzyme that destroys the neurotransmitter and bind to Na+ channels and inactivate them.
E) bind to Na+ channels and inactivate them and prevent depolarization by blocking Na+ entry into the cell.

Answer 1

Some neurotoxins work in the same way as local anesthetics by binding to Na+ channels and preventing depolarization. Lidocaine and novocaine are examples of local anesthetics that act as Na+ channel blockers.

Step-by-step explanation:

Some neurotoxins work in the same way as local anesthetics by binding to Na+ channels and inactivating them, which prevents depolarization by blocking Na+ entry into the cell. This effect makes local anesthetics effective by blocking nerve conduction and preventing the transmission of sensory impulses. Lidocaine and novocaine are examples of local anesthetics that act as Na+ channel blockers and inhibit the movement of sodium ions across the neuronal membrane.