The word "maxillae" refers to the upper jawbones in many animals, including humans. It is pronounced /mækˈsɪli/ in IPA phonetic transcription. The first sound, /m/, is a bilabial nasal sound, produced by closing the lips and allowing air to flow through the nose. The second syllable contains the short "i" sound, /ɪ/. The final sound, /li/, represents a long "e" sound followed by an "l" sound. The word is spelled with two "l"s to indicate the presence of two separate jawbones.
Maxillae are the plural form of the noun "maxilla," a term commonly used in anatomy and zoology to describe specific structures. The maxilla can refer to either of the two bones that form the upper jaw in vertebrates, including humans. These bones are paired structures located in the skull, which predominantly contribute to the framework of the facial structure. Maxillae are essential components of the overall dental structure, providing support for the teeth and facilitating mastication or chewing. They are also involved in the formation of the nasal and oral cavities.
In humans, each maxilla is composed of three main regions: the body, the frontal process, and the zygomatic process. The body of the maxilla forms the majority of the upper jaw, containing the sockets for the upper teeth. The frontal process extends upward, contributing to the structure of the nose, while the zygomatic process extends laterally to connect with the zygomatic bone of the cheek.
Maxillae play a crucial role in facial development, as they are involved in the growth and alignment of the teeth, as well as the overall facial symmetry. They also contribute to the formation of important structures such as the palate, the nasal cavity, and the paranasal sinuses. In addition to their physiological functions, maxillae are often considered during dental and facial surgeries, as well as in anthropological studies as a means of determining age, gender, and ancestral origins.
The upper jaw; a jaw-bone; among articulate animals, the lower pair of horizontal jaws.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "maxillae" comes from the Latin term "maxilla", which means "jawbone". In Latin, "maxilla" is the diminutive form of "mala", which means "jaw" or "cheek". This term was later adopted into English and other languages to refer to the two bones that form the upper jaw in humans and many other vertebrates.