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Frontalis Muscle – Attachments, Actions & Innervation

image descriptionFrontalis Muscle

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image descriptionAttachments of Frontalis Muscle: Origin & Insertion

Origin: (proximal attachments)
Galea aponeurotica.

Insertion: (distal attachments)
Skin around eyebrows and nose.

Frontalis Muscle - Origin and Insertion
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Actions of Frontalis Muscle on the face:

image descriptionRaises eyebrows & wrinkles forehead as it draws scalp back.

raising eyebrows wrinkles by frontalis muscle 1
raising eyebrows wrinkles by frontalis muscle 2
raising eyebrows wrinkles by frontalis muscle 3
raising eyebrows wrinkles by frontalis muscle 4

Nerve to Muscle and its Spinal Segment:

Temporal branch of facial nerve.

Overview of the facial expression muscles:

Test yourself while observing the Frontalis Muscle
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