Which of the Following Muscles Is Involved in Producing Horizontal

question 81

Multiple Choice

Which of the following muscles is involved in producing horizontal wrinkles in the forehead?

• A) the frontal belly of the epicranius
• B) the zygomaticus major
• C) the temporalis
• D) the medial pterygoid

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Definitions:

Xiphoid Process

A small cartilaginous extension of the lower part of the sternum which is usually ossified in the adult human.

Costal Cartilage

The bars of hyaline cartilage that connect the ends of the ribs to the sternum, contributing to the elasticity and expansion capacity of the rib cage.

Manubrium

The broad, upper part of the sternum (breastbone) with which the clavicles (collarbones) and the first ribs articulate.

Frontal Lobotomies

Surgical procedures that involve cutting connections in the brain's frontal lobe, historically used to treat mental illness.