What Is the Mechanism of Action of Memantine (Namenda)

question 10

Multiple Choice

What is the mechanism of action of memantine (Namenda) ?

• A) Increases production of dopamine
• B) Decreases production of serotonin
• C) Blocks N-methyl-D-aspartate (NMDA) receptors in the central nervous system (CNS)
• D) Enhances reuptake of central neurotransmitters

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Definitions:

Octet Rule

A chemical rule of thumb that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell, giving it the same electron configuration as a noble gas.

Isoelectronic

Describing atoms, ions, or molecules that have the same number of electrons and thus similar electron configurations.

Octet Rule

A chemical rule of thumb that reflects the observation that atoms of main-group elements tend to bond in such a way that each atom has eight electrons in its valence shell.

Lewis Dot Structure

A diagram that represents the valence electrons of atoms within a molecule, showing the bonding between atoms as well as lone pairs of electrons.