Retraction of the Lips Requires Contraction of Which Muscle

question 99

Multiple Choice

Retraction of the lips requires contraction of which muscle?

• A) Orbicularis oris
• B) Buccinator
• C) Risorius
• D) a & b
• E) b & c

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Definitions:

Astrocyte Glial Cells

Astrocyte glial cells are a type of cell in the brain and spinal cord involved in physical support, nutrition, and maintenance of the neuronal environment.

Drug Administration

The method by which a drug is delivered to produce a therapeutic effect, including oral, intravenous, topical, and inhalation techniques.

Oral Consumption

Oral consumption refers to the intake of substances through the mouth, typically involving food, drinks, medication, or other substances.

Neurological Side Effects

Adverse outcomes affecting the nervous system, potentially arising from medications, diseases, or injuries.