Which muscle extends from the forehead to the top of the skull and is responsible for raising eyebrows or drawing the scalp forward?

The muscle that extends from the forehead to the top of the skull and is responsible for raising the eyebrows or drawing the scalp forward is known as the frontalis. This muscle is part of the epicranius (or occipitofrontalis) muscle group, which is important for facial expressions. When the frontalis contracts, it elevates the eyebrows and can also contribute to expressions of surprise or curiosity.

Understanding the role of the frontalis is essential in esthetics, especially in treatments that involve facial muscle movements or the appearance of the forehead and brow area. Recognizing how this muscle interacts with other facial muscles can aid in various esthetic practices, such as facial massages or in the application of products that target specific areas of the face for lifting or rejuvenation.

In contrast, the temporalis is primarily involved in jaw movement, the occipitalis pulls the scalp backward, and the orbicularis oculi is responsible for closing the eyelids. Each of these muscles plays distinct roles in facial dynamics, but they do not raise the eyebrows or draw the scalp forward as the frontalis does.