Orbicularis Oris Origin
Orbicularis oris is a complex circular muscle that surrounds the orifice of the mouth and forms the majority of the lips. It belongs to a large group of muscles of facial expression. The orbicularis oris is not a simple sphincter muscle like the orbicularis oculi; it consists of numerous strata of muscular fibers surrounding the orifice of the mouth, but having different. Orbicularis oris muscle, also known as musculus orbicularis oris is a complex, multi-layered muscle which attaches through a thin, superficial musculoaponeurotic system to the. The orbicularis oris is supplied with arterial blood mainly by the superior and inferior labial branches of the facial artery. The mental and infraorbital branches of the maxillary artery. A mid-line portion of the orbicularis oris muscle was harvested from the upper lips of three chimpanzee and five human cadavers. The sampled blocks included the area between the.
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. Origin: Modiolus of angulus oris and vermillion line. Insertion: Skin and fascia of lips. Action: Compresses and protrudes lips. Innervation: Buccal and marginal mandibular branches of. The orbicularis oris muscle is a sphincter muscle that is located in the face and surrounds the mouth. It is a broad, thin muscle that is composed of several fibers that are. Origin: Maxilla and mandible . Insertion: Skin around the lips . Nerve: Buccal branch of the facial nerve . Action: Pucker the lips . Description: The Orbicularis oris is not a simple sphincter.
