Muscle Quadratus Lower Lip

The muscle of the quadratus labii inferioris, or quadratus labii inferioris, is a flat muscle on the face, which is located on the lower jaw, below the corner of the mouth. This muscle is responsible for moving the lower lip down and out.

The quadras inferior lip muscle consists of two parts: medial and lateral. The medial part is located on the medial side of the mandible and connects to the corner of the mouth, and the lateral part is located on the lateral side of the mandible. Both parts of the muscle join together in the center of the lower lip.

The function of the quadras inferior lip muscle is to help close the mouth and keep it closed and to move the lower lip down and out when speaking and chewing. In addition, this muscle is involved in the formation of a smile and the expression of various emotions on the face.

When the quadras labius muscle is injured or injured, various problems can occur, such as the inability to close the mouth or move the lower lip. In such cases, surgery may be required to restore muscle function.

Overall, the quadras inferior lip muscle is an important muscle in the face and plays an important role in our daily lives.

The muscles of the buccal-pharyngeal region are divided into three groups: the muscles of the upper and lower jaws and the lingual muscles. The muscles of the upper jaw include the temporalis, masseter and lateral pterygoid. The group of muscles of the lower jaw consists of the masseter proper, the chin, the Willis muscle and the mylohyoid muscle. The anterior group, due to the presence of the subcutaneous fascia, is represented by three independent muscles: buccal, facial and orbicularis.