The Masseter Muscles Originate on Your Cheekbones and Insert into the Posterior

question 44

Multiple Choice

The masseter muscles originate on your cheekbones and insert into the posterior corners of the mandible (the lower jaw bone) underneath your ears.Will contraction of the masseter muscles open or close your jaw?

• A)close
• B)open

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Definitions:

Virtually

In essence or effect, though not in actual fact; almost or nearly.

Prenatal Factors

Environmental and genetic influences that affect the development of the fetus during pregnancy.

Temperament

The aspects of an individual's personality, such as introversion or extroversion, that are believed to be innate rather than learned.

Differentiating

The process of distinguishing or identifying differences between two or more things or people.