Both Excitatory and Inhibitory Neurons Form Junctions with Muscles

question 53

Multiple Choice

Both excitatory and inhibitory neurons form junctions with muscles.By what mechanism do inhibitory neurotransmitters prevent the postsynaptic cell from firing an action potential?

• A)by closing Na⁺ channels
• B)by preventing the secretion of excitatory neurotransmitters
• C)by opening K⁺ channels
• D)by opening Cl⁻ channels

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Definitions:

Cis/Trans Isomers

Isomers that differ in the orientation of substituents around a double bond or a cyclic structure.

IUPAC Name

The systematic method of naming chemical compounds as prescribed by the International Union of Pure and Applied Chemistry.

Alkene

An unsaturated hydrocarbon containing at least one carbon-carbon double bond.

Carbon-Carbon Double Bond

A chemical bond between two carbon atoms involving four bonding electrons instead of the usual two, creating a region of high electron density.