A. Temporalis muscle B. Frontal branch of superficial temporalis muscle C. Supraorbital artery and nerve D. Supratrochlear artery E. Orbital part of orbicularis oculi muscle F. Palpebral part of orbicularis oculi muscle G. Lacrimal sac H. Nasolacrimal duct I. Angular artery J. Nasal septum K. Levator labii superioris muscle L. Levator anguli oris muscle M. Zygomaticus major muscle N. Infraorbial artery and nerve O. Orbicularis oris muscle P. Parotid duct Q. Buccinator muscle; a. Lateral rectus muscle b. Medial rectus muscle c. Superior oblique muscle d. Inferior oblique muscle e. Supratrochlear artery and nerve f. Dorsal nasal artery