Where does the frontalis muscle originate?
Galea aponeurotica
Frontalis muscle
| Frontalis | |
|---|---|
| Origin | Galea aponeurotica |
| Insertion | Orbicularis oculi muscle |
| Artery | supraorbital and supratrochlear arteries |
| Nerve | Facial nerve Temporal branch |
What is the origin insertion and function of the frontalis muscle?
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 |
What is the origin of the Occipitalis muscle?
Occipitalis Muscle 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 muscle originates at the epicranial aponeurosis?
Occiptalis muscle, frontalis muscle, and epicranial aponeurosis are collectively known as occipitofrontalis muscle. Together they draw the eyebrows up and wrinkle the forehead. The frontal belly, as seen above, originates on the epicranial aponeurosis and inserts on the skin of the eyebrow and forehead.
What is the origin and insertion of the temporalis?
The temporalis muscle is a thin, fan-shaped muscle situated within the temporal fossa of the skull….Temporal muscle.
| Origin | Temporal fossa (up to inferior temporal line), Temporal fascia |
|---|---|
| Insertion | Apex and medial surface of coronoid process of mandible |
What is the origin of the temporalis muscle?
The origin of the temporalis muscle is along the surface of the lateral skull at the temporal line. The muscle inserts on the coronoid process of the mandible and is a powerful elevator of the mandible.
What is the origin of orbicularis oris?
Orbicularis oris muscle
| Origin | Medial aspects of maxilla and mandible, perioral skin and muscles, modiolus |
|---|---|
| Insertion | Skin and mucous membrane of lips |
| Action | Closes mouth, compresses and protrudes lips |
| Innervation | Buccal branch of facial nerve (CN VII) |
Which muscle originates at the frontal bone and maxilla?
Masseter muscle
| Origin | Superficial part: maxillary process of zygomatic bone, Inferior border of zygomatic arch (anterior 2/3) Deep part: deep/inferior surface of zygomatic arch (posterior 1/3) |
|---|---|
| Insertion | Lateral surface of ramus and angle of mandible |
| Innervation | Masseteric nerve of mandibular nerve (CN V3) |
What are the origins and insertions for the masseter and the temporalis?
The masseter muscle provides powerful elevation and protrusion of the mandible by originating from the zygomatic arch and inserting along the angle and lateral surface of the mandible. The temporalis muscle originates from the floor of the temporal fossa and inserts onto the coronoid process of the mandible.
Which bone is the point of origin for the temporalis muscle?
| Temporalis muscle | |
|---|---|
| Origin | temporal lines on the parietal bone of the skull and the superior temporal surface of the sphenoid bone |
| Insertion | coronoid process of the mandible and retromolar fossa |
| Artery | deep temporal arteries |
| Nerve | deep temporal nerves, branches of the anterior division of the mandibular nerve (V3) |
What is the origin and insertion of temporalis?
What is the origin and insertion of the masseter muscle?
Origin: (proximal attachments): Zygomatic arch (medial surface and inferior border). Insertion: (distal attachments): Lateral surface of angle and ramus of mandible.
What is the difference between origin and insertion?
Origin and insertion are two types of attachment points of skeletal muscles.
What is the function of the frontalis muscle?
Find a mirror
What is the function of frontalis?
– Migraines – Temporomandibular joint dysfunction (TMJ) – Tension headaches – Constant eye strain
What are the origin and insertion of muscles?
Axial muscles originate on the axial skeleton (the bones in the head,neck,and core of the body),whereas appendicular muscles originate on the bones that make up the body’s