Occipitofrontalis muscle
Occipitofrontalis Muscle
The Occipitofrontalis muscle (pronunciation: /ɒksɪpɪtoʊfrʌntælɪs mʌskəl/) is a broad, thin, double-layered muscle located on the skull that covers parts of the forehead and the back of the head.
Etymology
The term "Occipitofrontalis" is derived from the Latin words "occiput" meaning back of the skull, and "frontalis" meaning of the forehead.
Structure
The Occipitofrontalis muscle consists of two parts: the frontalis and the occipitalis, connected by the galea aponeurotica, a tough layer of dense fibrous tissue.
The frontalis muscle covers the forehead and the upper part of the orbital region. The occipitalis muscle covers the posterior aspect of the skull.
Function
The Occipitofrontalis muscle plays a crucial role in facial expression. The frontalis part raises the eyebrows and wrinkles the forehead, while the occipitalis part moves the scalp back.
Related Terms
- Epicranius muscle: Another name for the Occipitofrontalis muscle.
- Temporalis muscle: A broad, fan-shaped muscle on each side of the head that assists in closing the jaw.
- Orbicularis oculi muscle: A muscle in the face that closes the eyelids.
See Also
External links
- Medical encyclopedia article on Occipitofrontalis muscle
- Wikipedia's article - Occipitofrontalis muscle
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