maxillar

The maxilla, also known as the upper jawbone, is a paired bone located in the facial skeleton of vertebrates. In humans, it is one of the bones that form the hard palate, the floor of the nasal cavity, and the roof of the oral cavity. The maxilla is a long, flat bone that articulates with the nasal bones, zygomatic bones, and mandible. It is also the site of attachment for several muscles of mastication, including the masseter and temporalis muscles.

The maxilla is a key component of the facial skeleton, contributing to the overall structure and function of the face. It plays a crucial role in facial expression, speech, and the protection of the teeth and nasal cavity. The maxilla is also involved in the sense of smell, as it contains the olfactory receptors.

In humans, the maxilla is typically the largest bone in the face, and it is composed of several distinct regions, including the alveolar process, which houses the upper teeth. The maxilla is a dynamic bone that undergoes significant growth and remodeling throughout life, particularly during childhood and adolescence.

The maxilla is a subject of interest in various fields, including anatomy, dentistry, and orthodontics. It is also a common site of injury and fracture, particularly in sports and motor vehicle accidents. In cases of maxilla fracture, surgical intervention may be necessary to restore the bone's structure and function.