What attaches to the occipitofrontalis muscle?
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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 movement does the occipitofrontalis allow for?
The occipitofrontalis is a large muscle that extends from the back of the head to the forehead. As one of the muscles of facial expression, the occipitofrontalis is able to carry out several different types of movement, such as wrinkling the forehead, raising the eyebrows, and the backward movement of the scalp.
What is the function of the frontal belly of the occipitofrontalis muscle?
The occipitofrontalis muscle helps to create facial expressions. Assisted by the occipital belly, the frontal belly draws the scalp back, which raises the eyebrows and wrinkles the forehead.
What are the origins and insertions of the occipitalis muscle?
The occipitalis muscle originates from the occipital bone, which is a cranial bone located at the back, base of the skull. The occipitalis inserts onto the back end of the galea aponeurotica, which is a sheet of fibrous connective tissue that covers the top portion of the skull.
What is occipitofrontalis muscle?
The occipitofrontalis or epicranius 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.
Where is the occipitofrontalis muscle?
What is the function of the occipitalis muscle?
Occipitalis is a relatively thin, rectangular shaped muscle which arises from the occipital bone and inserts in the epicranial aponeurosis. Its primary function is to move the scalp towards the posterior of the skull.
What is the insertion of the occipitalis?
| Occipitalis muscle | |
|---|---|
| Origin | Superior nuchal line of the occipital bone and mastoid process of the temporal bone |
| Insertion | Galea aponeurosis |
| Artery | Occipital artery |
| Nerve | Posterior auricular nerve (facial nerve) |
What do occipital muscles do?
What movement is produced in occipitalis?
Atlantooccipital joint
| Type | Synovial ellipsoid joint; biaxial |
|---|---|
| Ligaments | Posterior atlantooccipital ligament, anterior atlantooccipital ligament |
| Innervation | C1 spinal nerve |
| Blood supply | Anastomosis between deep cervical, occipital and vertebral arteries |
| Movements | Principal movement; Flexion – extension Limited lateral flexion |
What is the action of the occipitofrontalis muscle?
The function of occipitofrontalis muscle is to elevate the eyebrows and wrinkle the forehead skin with its frontal part, and to retract the scalp with its occipital part.
What tendon connects the occipitalis and the frontalis muscles?
Chapter 23 – Cells, Anatomy, and Physiology
| A | B |
|---|---|
| Aponeurosis | a tendon that connects the occipitalis and the frontalis. |
| Arteries | thick-walled muscular and elastic tubes that carry pure blood from the heart to the capillaries. |
| Artria | the path through which blood flows from the atrium to the ventricle. |
