Frontalis muscle
Frontalis Muscle
The Frontalis muscle (pronounced: fron-TAY-lis MUS-kul) is one of the muscles of the human anatomy that is located in the facial region. It is primarily responsible for the movement of the forehead and the eyebrows.
Etymology
The term "Frontalis" is derived from the Latin word "frons" which means forehead. The term "muscle" comes from the Latin "musculus" meaning "little mouse", possibly due to the resemblance of some muscles to small animals.
Function
The Frontalis muscle plays a crucial role in facial expressions. It allows for the raising of the eyebrows and the wrinkling of the forehead. It is innervated by the facial nerve, specifically the temporal branch, which controls the movement of the muscle.
Anatomy
The Frontalis muscle is a thin, quadrilateral muscle that is intimately adherent to the superficial fascia. It is located on the frontal bone of the skull, hence its name. It is connected to the occipitalis muscle at the back of the head by a broad, tendinous structure known as the galea aponeurotica.
Related Terms
- Facial Nerve: The nerve that innervates the Frontalis muscle.
- Occipitalis Muscle: The muscle at the back of the head that is connected to the Frontalis muscle.
- Galea Aponeurotica: The tendinous structure that connects the Frontalis and Occipitalis muscles.
See Also
External links
- Medical encyclopedia article on Frontalis muscle
- Wikipedia's article - Frontalis muscle
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