Q. Where is the frontalis and temporalis located?
The directions of the muscle fibers are vertical, which, with repeated movement, result in the appearance of horizontal lines across the forehead. The frontalis terminates laterally at the temporal fusion line, where it lies over the temporalis muscle (Figure 1).
Q. What is the function of the frontalis?
The frontalis muscle is responsible for elevating the eyebrows, while the corrugator supercilii, orbicularis oculi, and procerus play a role in its depression. The function of the forehead is often spared in middle cerebral artery strokes.
Table of Contents
- Q. Where is the frontalis and temporalis located?
- Q. What is the function of the frontalis?
- Q. What type of muscle is the frontalis muscle?
- Q. What does frontalis mean in common English?
- Q. What is the origin insertion and function of the frontalis?
- Q. What is the temporalis muscle?
- Q. What is a frontalis mean?
- Q. Is the temporalis muscle separate from the frontalis muscle?
- Q. Where does the temporalis originate in the human body?
- Q. Which is part of the temporal fossa is covered by muscle?
- Q. Is the frontalis muscle involved in mastication?
Q. What type of muscle is the frontalis muscle?
The frontalis muscle (from Latin ‘frontal muscle’) is a muscle which covers parts of the forehead of the skull. Some sources consider the frontalis muscle to be a distinct muscle. However, Terminologia Anatomica currently classifies it as part of the occipitofrontalis muscle along with the occipitalis muscle.
Q. What does frontalis mean in common English?
Medical Definition of frontalis : the muscle of the forehead that forms part of the occipitofrontalis.
Q. What is the origin insertion and function of the frontalis?
Occipitofrontalis muscle
| Origin | Frontal belly (frontalis): Skin of eyebrow, muscles of forehead Occipital belly (occipitalis): (Lateral 2/3 of) superior nuchal line |
|---|---|
| Insertion | Epicranial aponeurosis |
| Action | Frontal belly: Elevates eyebrows, wrinkles skin of forehead Occipital belly: Retracts scalp |
Q. What is the temporalis muscle?
The temporalis muscle is one of the muscles of mastication. It is responsible for both closing the mouth and retraction (posterior fibers).
Q. What is a frontalis mean?
Medical Definition of frontalis : the muscle of the forehead that forms part of the occipitofrontalis. — called also frontalis muscle.
Q. Is the temporalis muscle separate from the frontalis muscle?
Since it is difficult to isolate the frontalis from the temporalis muscle, it is not possible to palpate it independently from the underlying temporalis. The two muscles combined give the top of the head behind the eyes it’s shape and fullness.
Q. Where does the temporalis originate in the human body?
Origins and Insertions. It arises from the temporal fossa, a large depression on the side of the skull, and the temporal fascia which completely covers the surface of the muscle. From there, the muscle descends through the gap between the zygomatic arch and the skull, forms a thick tendon and inserts at the coronoid process of mandible.
Q. Which is part of the temporal fossa is covered by muscle?
The temporalis muscle covers the temporal fossa with its deep surface. Superficially, the muscle is covered by the temporal fascia, masseter muscle, subcutaneous tissue and skin. The auriculotemporal, facial and zygomaticotemporal nerves run across the superficial aspect of the temporalis muscle.
Q. Is the frontalis muscle involved in mastication?
Although the frontal muscle is not one of the muscles directly involved in mastication, due to its location relative to the temporal muscle, it will be affected by movement of or damage to of the temporal muscle. Atrophy of the muscles involved in jaw movement (including the temporalis) would be more notable than observing the healthy muscles.
