What Are the Facial Muscles?

Also known as facial muscles, the skin muscles of the face. The facial muscles start from the skull and stop at the facial skin. When this muscle is contracted, wrinkles on the face change the shape of cleft lip and cracked eyes to express various feelings such as joy, anger, sorrow, and joy, and participate in activities such as language and chewing. The facial muscles are mainly distributed around the eyes, nose, and mouth. They are circular or radial. The circular muscles have the function of closing the fissures, and the radial muscles have the function of opening the fissures. The muscles include frontal muscles, temporal muscles, buccal muscles, occipital muscles, orbicularis oris, orbicularis oris. Facial muscles are dominated by facial nerves, so facial nerve palsy occurs during facial nerve injury. Among them, peripheral paralysis and central palsy behave differently.

Also known as facial muscles, the skin muscles of the face. The facial muscles start from the skull and stop at the facial skin. When this muscle is contracted, wrinkles on the face change the shape of cleft lip and cracked eyes to express various feelings such as joy, anger, sorrow, and joy, and participate in activities such as language and chewing. The facial muscles are mainly distributed around the eyes, nose, and mouth. They are circular or radial. The circular muscles have the function of closing the fissures, and the radial muscles have the function of opening the fissures. The muscles include frontal muscles, temporal muscles, buccal muscles, occipital muscles, orbicularis oris, orbicularis oris. Facial muscles are dominated by facial nerves, so facial nerve palsy occurs during facial nerve injury. Among them, peripheral paralysis and central palsy behave differently.

Chinese name

Facial muscle

Distribution

Around eyes, nose, and mouth

Pinyin

mianji

Facial muscle review

Facial muscles include cranialis, nasal muscles, nasal septum muscles, orbicularis oris, frown muscles, eyebrows, anterior ear muscles, supraauricular muscles, posterior ear muscles, orbicularis oralis, descending orbicularis, transverse diaphragm , Laughing muscle, great gluteal muscle, small zygomatic muscle, upper lip muscle, upper lip nasal wing muscle, lower lip muscle, mouth horn muscle, diaphragm muscle and buccal muscle; they and the broad neck muscle and several deep muscles all occur in the tongue arch Protomuscular masses, each receiving nearby blood vessels, have abundant blood circulation and are all dominated by facial nerve branches. The development of facial muscles varies from person to person, and there are also several fusions between each muscle. Facial muscles start from the bones and stop on the skin. When they contract, they can open and close the cracked eyes, open and close the mouth, or involve the skin.

The main muscles of the craniocypal muscles are the left and right pair of occipitofrontalis muscles. It has two flat muscle abdomen, connected by a cap-shaped aponeurosis, covering the cranial crest. The occipital abdomen starts 2/3 from the outer side of the upper occipital line; the frontal abdomen is attached to the skin of the eyebrows and fuses with the orbicularis muscle; the superficial surface of the cap-shaped aponeurosis is connected to the scalp by dense subcutaneous tissue, and the deep surface is connected with The periosteum of the skull is separated by cellulite. Function: Raise eyebrows, make horizontal wrinkles on the forehead, and move the scalp back and forth.

Orbicularis orbicularis muscle: The orbicularis orbicularis muscle is ring-shaped and surrounds the fissure of the eye. It is attached to the medial condyle ligament and its nearby bone surface. Margin, the lateral muscle bundle is often connected with the fasciata muscle bundle; The tear is connected to the eyelid and is located on the deep side of the lacrimal sac. Function: Lightly close the eyelids; close the eyelids and tears tightly, and tighten the tear fascia to expand the lacrimal sac.

Orbicularis orbicularis This muscle has a complicated structure surrounding the cleft lip, and it intersects with the muscle bundles of other facial muscles. At the corner of the mouth, it intersects with the fasciculus major, sacral, laughter, buccal and levator horn muscles; On the upper lip, the fascia of the upper lip muscle, the upper nasal wing muscle, and the small iliac muscle Orbicular orbicularis muscle; On the lower lip, the muscle bundles that lower the lip muscles and buccal muscles also participate in this muscle; There are muscle bundles in the lips that run obliquely from the skin to the lip mucosa. Function: Close the mouth, make the lips press against the teeth, and make the upper and lower lips protrude forward, so it plays an important role in language, drinking, eating, chewing and various expressions.

Buccal muscles: Buccal muscles are located outside the buccal mucosa and are attached to the alveolar portion of the mandible facing the third molar and subsequent bone surfaces; the muscle bundles tend to the mouth angle, and the upper and lower muscle bundles are crossed and mixed into the entrance wheel The muscles of the orbicularis and upper and lower lips. Function: Keep the cheek mucosa tense when the mouth is closed; when chewing, this muscle and the tongue push food between the upper and lower cavities; when you blow or play a musical instrument, press the gas in the mouth.

Facial muscle area

Cranioparietal muscle

The parietal cranialis muscle is broad and thin, with one occipitofrontalis muscle on the left and right, which is composed of two muscular abdomen and a cap-shaped aponeurosis. The front muscle belly is located under the frontal skin and is called the frontal belly; the rear muscle belly is located under the occipital skin and is called the occipital belly. The cap-shaped aponeurosis is very tough, connected to the abdomen of the two muscles and tightly bonded to the scalp, and is separated from the deep periosteum by loose connective tissue. The occipital abdomen starts from the occipital bone, and the frontal abdomen ends at the brow skin. The occipital abdomen can pull the cap-shaped aponeurosis backwards, and when the frontal abdomen contracts, it can raise the eyebrows and cause wrinkles on the forehead skin.

Orbicularis

The orbicularis orbicularis is located around the eyes and is oblate. Can make eyes closed. Because a small number of muscle bundles are attached to the back of the lacrimal sac, when the eye is contracted and closed, the lacrimal sac can be expanded at the same time, which promotes the flow of tears through the nasolacrimal duct to the nasal cavity.

Perimouth muscle

Perioral muscles are located around the cleft lip, including radial and circular muscles. The radial muscles are located above and below the lips, which can lift the upper lip, lower the lip, or pull the corner upward, downward, or outward. There is a pair of buccal muscles deep in the cheeks. This muscle is close to the side wall of the mouth, which can make the lips and cheeks close to the teeth to help chewing and sucking. It can also pull the mouth angle outside. The ring muscle that surrounds the cleft lip is called the orbicularis oris muscle, which closes the cleft lip (shut up) when it contracts.

Nasal muscle

Nasal muscles are underdeveloped. They are a few thin flat muscles that are distributed around the nostrils.