The Primary Muscle of the Cheek Is the ___________________

question 20

Multiple Choice

The primary muscle of the cheek is the ___________________.

• A) levator labii superioris
• B) buccinator
• C) orbicularis oculi
• D) mentalis
• E) orbicularis oris

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Definitions:

Precambrian

Relating to or denoting the earliest eon in the earth's history, which ended about 541 million years ago, before the Cambrian period.

Cenozoic

The most recent of the three major subdivisions of animal and plant life on Earth, covering the time from 66 million years ago to the present.

Mesozoic

The era of geologic time from about 252 to 66 million years ago, known as the "Age of Reptiles," including the Triassic, Jurassic, and Cretaceous periods.

Paleozoic

An era in the geological timescale, occurring between 541 million and 252 million years ago, characterized by the early development of abundant marine life and the first emergence of land plants and animals.