What does the epicranius muscle cover?
The occipitofrontalis muscle (epicranius muscle) is a muscle which covers parts of the skull. It consists of two parts or bellies: the occipital belly, near the occipital bone, and the frontal belly, near the frontal bone. In humans, the occipitofrontalis helps to create facial expressions.
Where is the epicranius muscle located?
The actual muscle tissue is only found over the forehead (the portion of the muscle called the epicranius frontalis; sometimes called the frontal belly of the epicranius) and the back of the head (the portion of the muscle called the epicranius occipitalis; sometimes called the occipital belly of the epicranius).
Which muscle is also known as the epicranius?
The occipitalis muscle, or occipital belly, is a muscle situated on the back of the skull. Some anatomists consider occipitalis and frontalis to be two discrete muscles while others prefer to categorize them as two regions of the same muscle unit – the epicranius, or occipitofrontalis.
What is the epicranius muscle made up of?
The Epicranius (Occipitofrontalis) is a broad, musculofibrous layer, which covers the whole of one side of the vertex of the skull, from the occipital bone to the eyebrow. It consists of two parts, the Occipitalis and the Frontalis, connected by an intervening tendinous aponeurosis, the galea aponeurotica.
What is the function of the occipitalis muscle?
The occipitalis muscle is innervated by the facial nerve and its function is to move the scalp back. The muscles receives blood from the occipital artery.
What is the function of the Mentalis muscle?
The mentalis muscle (MT) is the only elevator of the lower lip and the chin, and it provides the major vertical support for the lower lip.
What does occipitalis muscle do?
What attaches to the Occipitofrontalis muscle?
The occipitofrontalis muscle attaches to the occiput and mastoid part of the temporal bone, the epicranial aponeurosis, and the temporal fascia attachment to the zygomatic arch. These attachments limit potential posterior and lateral spread of infections from the scalp.
What is the mentalis muscle?
What Innervates the mentalis muscle?
The mentalis is innervated by the marginal mandibular branch of the facial nerve (CN VII).