Question

multiple choice question

the occipitofrontalis consists of two muscles connected to each other by a broad aponeurosis. which structure forms the anterior (forehead) portion of occipitofrontalis?

mentalis
occipital belly
frontal belly
nasalis

Explanation:

Identify the components of the occipitofrontalis muscle

Using the Occipitofrontalis Muscle knowledge point

The occipitofrontalis muscle is a bipartite muscle of facial expression consisting of two main contractile portions (bellies) connected by a broad, flat tendon called the epicranial aponeurosis (galea aponeurotica):

• The posterior portion, located near the occipital bone, is the occipital belly.
• The anterior portion, located over the forehead, is the frontal belly.

Therefore, the structure forming the anterior (forehead) portion is the frontal belly.

Answer:

• Mentalis
• Occipital belly
• Frontal belly (Correct answer)
• Nasalis