What is the insertion of the occipitalis?
The occipitalis is a thin quadrilateral muscle in the posterior scalp. It originates on the occipital bone and the mastoid process of the temporal bone. It inserts into the galea aponeurotica. The occipitalis draws the scalp posteriorly.
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 occipitalis?
Medical Definition of occipitalis : the posterior belly of the occipitofrontalis that arises from the lateral two-thirds of the superior nuchal lines and from the mastoid part of the temporal bone, inserts into the galea aponeurotica, and acts to move the scalp.
What muscle originates at the epicranial aponeurosis?
occipitofrontalis muscle
Structure. In humans, the epicranial aponeurosis originates from the external occipital protuberance and highest nuchal lines of the occipital bone. It merges with the occipitofrontalis muscle.
What is the origin of the epicranius?
69 Cards in this Set
| Orbicularis Oculi | ORIGIN: Maxilla, frontal INSERTION: Upper & lower eyelids ACTION: closes eyelids/wink/blink |
|---|---|
| Epicranius FRONTALIS | ORIGIN: epicranial, aponeurosis INSERTION: skin of forehead ACTION: raises eybrows & wrinkles forehead |
What is the epicranius muscle?
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.
What is the origin of the Occipitofrontalis?
Occipitofrontalis muscle
| Occipitofrontalis | |
|---|---|
| Origin | two occipital bellies and two frontal bellies. |
| Insertion | epicranial aponeurosis |
| Artery | frontal belly: supraorbital and supratrochlear arteries occipital belly: occipital artery |
| Nerve | facial nerve |
What are the Epicranius muscle?
What are the origins and insertions of the Epicranius Occipitalis muscle?
the occipital belly, near the occipital bone. It originates on the lateral two-thirds of the highest nuchal line, and on the mastoid process of the temporal bone. It inserts into the epicranial aponeurosis. the frontal belly, near the frontal bone.
Where is the Epicranius muscle?
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).
Where does the muscle of the occipitalis come from?
The Occipitalis muscle is a thin, quadrilateral muscle that arises by the tendinous fibers from lateral two-thirds of occipital bone’s superior nuchal line as well as from the temporal bone’s mastoid section.
What is the anatomy of the occipital bone?
Muscle Anatomy of the Occipitalis. Origin: The lateral portion of the superior nuchal line of the occipital bone. Insertion: Galea aponeurotica. Actions: Pulls the scalp posteriorly. Innervation: Posterior auricular branch of the facial nerve (cranial nerve VII) Blood Supply: Branches from the occipital artery.
Where does the occipital belly begin and end?
The Occipitalis along with frontalis muscle is one of the two bellies or sections of the epicranius. The occipital belly lies close to the occipital bone. The muscle originates at the mastoid part of temporal bone as well as the occipital bone’s superior nuchal line and ends at the galea aponeurotica.
Where is the occipital belly of epicranius located?
Being one the skull covering muscle, occipitalis muscle is also known as the occipital belly of epicranius. The muscle is positioned at the back of the head, above the base of the scalp, anteriorly surrounded by face and neck region. Occipital Artery supplies blood to the occipitalis muscle.