Zygomaticus minor muscle
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Zygomaticus minor muscle

Zygomaticus Minor Muscle Anatomy The zygomaticus minor is a muscle of facial expression. It originates from zygomatic bone and continues with orbicularis oculi on the lateral face of the levator labii superioris and then inserts into the outer part of the upper lip. Like all muscles of facial expression, it is innervated by the facial…

Levator Anguli Oris Muscle
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Levator Anguli Oris Muscle

Levator anguli oris Muscle Anatomy The levator anguli oris (caninus) is a facial muscle of the mouth arising from the canine fossa, immediately below the infraorbital foramen. It elevates the angle of the mouth medially. The buccal branches of the facial nerve supply the levator anguli oris. Origin The levator anguli oris arises from the…

Levator Labii Superioris Muscle
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Levator Labii Superioris Muscle

Levator Labii Superioris Muscle Anatomy Origin The levator labii superioris muscle has three points of origin that blend and passes into the upper lip. All three origins attach together within the upper lip and at the time of contraction, raise the upper lip. A strap of the angular head attaches within the ala of the…

Levator labii superioris alaeque nasi Muscle
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Levator labii superioris alaeque nasi Muscle

Levator labii superioris alaeque nasi Muscle Anatomy The levator labii superioris alaeque nasi muscle is translated from a Latin word that means “Lifter of both upper lips and wing of the nose “. It has the longest name of any muscle in the animal.  Historically known as Otto’s muscle, it dilates the nostril and elevates…

Orbicularis Oris Muscle
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Orbicularis Oris Muscle

Orbicularis Oris Muscle Anatomy Orbicularis oris muscle is a complex and multi-layered muscle that attaches through a thin, superficial musculo-aponeurotic system to the dermis of the upper lip and lower lip and serves as an attachment site for many other facial muscles around the oral region. Origin It originates from the superior incisivus from the maxilla,…

Compressor Naris Muscle (Nasalis muscle)
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Compressor Naris Muscle (Nasalis muscle)

The Compressor Naris muscle is part of the nasalis muscle. The transverse part (compressor naris) arises from the maxilla, above and lateral to the incisive fossa; its fibers proceed upward and medially, expanding into a thin aponeurosis which is continuous on the bridge of the nose with that of the muscle of the opposite side,…

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Orbicularis Oculi Muscle

Orbicularis Oculi Muscle Anatomy The orbicularis oculi muscle lies directly underneath the surface of the skin, around the eyes. Its function is to close the eyelid and to help in the passing and draining of tears through the punctum, canaliculi, and lacrimal sac, all parts of the tear drainage system. Origin The orbicularis oculi originates…