What is the broad muscle formed by the joining of the frontalis and occipitalis called?

The broad muscle formed by the joining of the frontalis and occipitalis is known as the occipito-frontalis. This muscle is crucial in facial expression and is located on the top of the head. The frontalis portion, situated at the forehead, is responsible for raising the eyebrows and wrinkling the forehead, while the occipitalis, located at the back of the head, helps in moving the scalp backward. Together, they form the occipito-frontalis muscle, which plays a significant role in various facial movements.

Understanding the anatomy of this muscle is essential for hairdressers, as it influences the overall look and movement of the hair on the scalp. Meanwhile, the other terms refer to different structures or muscles. The epicranium is often considered a broader term that describes the entire scalp, while the temporalis is a muscle located on the side of the head that helps with jaw movement, and the frontalis specifically refers to just one part of the occipito-frontalis muscle.