Anterior | Laterally

Omohyoid Muscle Trapezius Muscle Masseter Muscle Orbicularis Oris Muscle Mentalis Muscle Depressor Labii Inferioris Muscle Depressor Anguli Oris Muscle Buccinator Muscle Zygomaticus Major Muscle Zygomaticus Minor Muscle Levator Labii Superioris Muscle Temporal Muscle Orbicularis Oculi Muscle Sternocleidomastoid Muscle Frontalis Muscle

Frontalis Muscle of Face

STRUCTURE AND POSITION

Frontalis Muscle is a thin sheet of muscles just above the orbits.
Frontalis Muscle is larger and more pale in colour than the occipital belly.
Frontalis Muscle is quadrilateral in shape.

ATTACHMENTS

Origin : Frontalis Muscle arises from the superior margin of the orbital bone on both sides. It also arises from the Procerus Muscle in middle and adjoining muscles of the Orbit.
It runs superiorly from both sides over the forehead and skull.
Insertion : Frontalis Muscle gets inserted into the Galea Aponeurotica which is a fibrous layer covering the Skull.

BLOOD SUPPLY

Frontalis Muscle is supplied by the Supraorbital and Supratrochlear Arteries.

NERVE SUPPLY

Frontalis Muscle is innervated by the Facial Nerve.

ACTION

Frontalis Muscle raises the Eyebrows.
It also produces the horizontal wrinkles on the forehead.

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