Which of the Following Is not Primarily a Muscle of Facial

question 65

Multiple Choice

Which of the following is not primarily a muscle of facial expression?

• A) depressor labii
• B) mentalis
• C) risorius
• D) buccinator
• E) masseter

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Definitions:

Neurotransmitter's Action

The action of neurotransmitters involves the chemical substances transferring signals from one neuron to another across synapses in the brain or throughout the nervous system.

Agonist

A chemical substance that binds to and activates receptor cells to produce a biological response.

Synaptic Gap

The synaptic gap is the tiny space between neurons through which neurotransmitters travel to communicate signals.

Neurotransmitter Molecules

Chemical substances that transmit signals across the synaptic gap from one neuron to another.