Muscles / Head & neck
Frontalis
- Head & neck
- Head & face
- Superficial layer
Also called frontal belly of occipitofrontalis, occipitofrontalis (frontal belly).
Anatomy
- Origin
- Epicranial aponeurosis
- Insertion
- Skin and subcutaneous tissue of the eyebrows and forehead
- Nerve
- Facial nerve (CN VII), temporal branches
Actions
- Elevates the eyebrows
- Wrinkles the skin of the forehead
Notes
- Tested in facial nerve palsy: ask the patient to raise the eyebrows. Forehead sparing suggests an upper motor neuron (central) lesion.
References (4)
- Standring S, ed. Elsevier. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd ed.
- Dalley AF, Agur AMR. Wolters Kluwer. Moore's Clinically Oriented Anatomy. 9th ed.
- Neumann DA. Elsevier. Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. 3rd ed.
- Betts JG, Young KA, Wise JA, et al. OpenStax (free, openly licensed textbook). Anatomy and Physiology 2e