Facial: Definition, Anatomy, and Clinical Relevance

Facial (adjective) means pertaining to the face (Latin facies = face, form, appearance).

Anatomical Structures

• Facial nerve (CN VII): Motor to muscles of expression; taste (ant. 2/3 tongue); parasympathetic to lacrimal/salivary glands.
• Facial artery: Branch of external carotid; supplies face, lips, nose, tonsil.
• Facial vein: Drains to internal jugular; no valves (route for infection spread).
• Facial muscles (mimetic): Orbicularis oculi/oris, frontalis, zygomaticus, buccinator, platysma – innervated by CN VII.
• Facial bones: 14 bones (nasal, maxilla, zygomatic, lacrimal, palatine, inferior nasal concha, vomer, mandible).

Clinical Terms

• Facial palsy / Bell's palsy: CN VII paralysis.
• Facial fracture: LeFort I/II/III, zygomaticomaxillary complex (ZMC), nasal, orbital blowout.
• Facial pain: Trigeminal neuralgia (CN V), sinusitis, dental, TMJ.
• Facial rejuvenation: Cosmetic procedures (Botox, fillers, facelift).

Related Terms

• Facial expression: Nonverbal communication via mimetic muscles.
• Facial recognition: Biometric identification.
• Facial asymmetry: Sign of stroke, Bell's palsy, developmental disorder.

"Facial" is the standard medical adjective; "facial" structures are distinct from "cranial" (skull) or "cervical" (neck).