Depressor labii inferioris muscle

Resection of the depressor labii inferioris muscle on the contralateral side can improve facial symmetry at rest and with smiling. At its origin the most lateral 12 cm of the DLI is covered by the origin of the DAO.

The depressor labii inferioris or quadratus labii inferioris is a facial muscle that helps lower the bottom lip.

Depressor labii inferioris muscle. Depressor labii inferioris muscle Musculus depressor labii inferioris Depressor labii inferioris is a paired facial muscle located in the chin region of the face. Due to its quadrangular shape it is also called quadratus labii inferioris. It belongs to a broad group of muscles of facial expression called the buccolabial group.

The depressor labii inferioris is a facial muscle that allows you to pull your lower lip down or to the side. While this muscle has very limited movement on its own it plays an important role in the complex structure of facial muscles that allow us to make such detailed and precise facial expressions. The depressor labii inferioris also depressor labii inferioris muscle latin.

Musculus depressor labii inferioris is a facial muscle of the chin area that pulls the lower lip downward and forward. Depressor labii inferioris muscle by Anatomy Next Origin. The depressor labii inferioris originates from the oblique line of the base of the mandible.

The depressor labii inferioris also called the quadratus labii inferioris because of its quadrilateral shape is a facial muscle. It is a paired facial muscle which means that one muscle. The depressor labii inferioris muscle is a quadrangular facial muscle which is found within the jaw area that pulls the lower lip downwards as well as laterally that helps in creating facial expression.

The depressor labii inferioris originates via anterior of the mandible deep towards the depressor anguli oris. Depressor labii inferioris muscle. This muscle arises from the oblique line of the mandible and inserts on the skin of the lower lip blending in with the orbicularis oris muscle.

At its origin depressor labii is continuous with the fibers of the platysma muscle. Much yellow fat is. Depressor labii inferioris muscle frontalpng 800 800.

Depressor labii inferioris muscle lateralpng 800 800. Depressor labii inferiorispng 428 410. Gray musculus depressor labii inferiorispng 434 434.

Gray381png 426 305. Muscles of the head face and neck. The depressor labii inferioris or quadratus labii inferioris is a facial muscle that helps lower the bottom lip.

The depressor anguli oris muscle received innervation from both lower buccal and marginal mandibular facial nerve branches whereas the depressor labii inferioris muscle was solely innervated by marginal mandibular branches. The mandibular depressor anguli oris origin was on average 39 mm wide and its medial and lateral borders were located 17 mm from the symphysis and 41 mm. Depressor labii inferioris muscle TA facial muscle of mouth.

Origin anterior portion of base of mandible. Insertion interdigitates with fibers of orbicularis oris musculus to reach skin of lower lip. Action depresses lower lip.

Musculus depressor labii inferioris TA depressor muscle of lower. The DLI previously known as the quadratus labii inferioris is the muscle most responsible for depression of the lower lip in facial animation. 4 It takes origin from the lower lateral surface of the body of the mandible inferior to the mental foramen.

At its origin the most lateral 12 cm of the DLI is covered by the origin of the DAO. Blood supply to the depressor labii inferioris muscle comes from the superior labial branch of facial artery and infraorbital branch of maxillary artery. Infraorbital artery Arteria infraorbitalis.

Resection of the depressor labii inferioris muscle on the contralateral side can improve facial symmetry at rest and with smiling. Reconstruction of the paralyzed face It interdigitates with the depressor anguli oris with orbicularis oris and depressor labii inferioris muscles and it. Depressor labii inferioris muscle View Related Images.

Oblique line of the mandible between the mental foramen and the midline Insertion. Blends with the orbicularis oris and the skin of the lower lip Actions. Pulls the lower lip downward Nerve supply.

Depressor labii inferioris muscle. Muscles of the head face and neck. The depressor labii inferioris or quadratus labii inferioris is a facial muscle that helps lower the bottom lip.

How do you reduce orbicularis oris. There is no way to reduce the size of the orbicularis oris. It is a circular functioning muscle of the mouth.

This muscle arises from the oblique line of the mandible and inserts on the skin of the lower lip blending in with the orbicularis oris muscle. This muscle depresses lowers the lower lip. Innervation Nerve control.

The depressor labii inferioris is innervated. The depressor labii inferioris and depressor anguli oris muscles arise from the oblique line of the mandible and insert into the lip. Together they act to depress the.

Depressor labii inferioris muscle resection was not effective but bidirectional horizontal and vertical fascia lata grafting improved the aesthetic appearance of the asymmetrical lower lip.