Muscle of the Lips / Superficial Muscles of the Face Flashcards
OIAI of Platysma Muscle
O- Mid-dorsal tendinous raphe of neck and skin
I- Covers the parotid and masseter region of cheek and lips
A- Draw the commissure of the lips caudally
I- Facial Nerve (Dorsal and ventral branches of buccal region and branch of posterior auricular nerve
OIAI of Orbicularis Oris
O- Commissure of the lips
I- Skin and Mucosa
A- Close the mouth and Pull nose downward during sniffing
I- Facial nerve (Dorsal and ventral branches of the buccal region)
OIAI of Incisivus Superioris et Inferioris
O- Lies deep in the Orbicularis oris
I- Alveolar border of the incisive bone and mandible
A- Extend and dilate external nares
I- Facial nerve
OIAI of Maxillonasolabialis (Nasal Part)
O- Levator Labii superioris or maxillaris beneath the apical end of levator nasolabialis
I- Nasal ala and upper lip
A- Increase the diameter of external nares and lift the apical portion of the upper lip
I- Facial nerve
OIAI of Caninus (Labial Part)
O- Extend over the labial end of levator nasoliabialis into the upper lip
I- Nasal ala and upper lip
A- Increase the diameter of external nares and lift the apical portion of upper lip
I- Facial nerve
OIAI of Pars Buccalis/Dorsalis (Buccinator)
O- Upper lip
I- Alveolar border of maxilla
A- Return food from the vestibule to masticatory surface of the tooth
I- Facial nerve
OIAI of Pars Molaris/Ventralis (Buccinator)
O- Lower lip
I- Alveolar border of mandible
A- Return food from the vestibule to masticatory surface of the tooth
I- Facial nerve
OIAI of Mentalis
O- Alveolar border and body of Mandible
I- Lower lip
A- Stiffen the lower lip in apical region
I- Facial nerve
OIAI of Zygomaticus
O- Rostral angle of the scutulum to the edge of the mouth
I- Palpebral portion of sphincter colli profundus
A- Fix the angle of the mouth and draws it back
I- Facial nerve (Ramus auriculopalpebralis)
