Jaws
Jaws
Jaws (/jɔːz/), in the context of anatomy, refer to the part of the skull that frames the mouth and holds the teeth. The term is most commonly used to describe the upper and lower bony structures in vertebrates, including humans.
Etymology
The term "jaws" originates from the Old English word "ceowan," which means to chew. It is related to the Old High German word "kio," and the Dutch word "kauwen," both of which also mean to chew.
Anatomy
Jaws consist of two main parts: the mandible (lower jaw) and the maxilla (upper jaw). These structures house the teeth and play a crucial role in the process of mastication (chewing). The jaws work together with the tongue and salivary glands to break down food into smaller pieces that can be swallowed and digested.
Mandible
The mandible is the largest and strongest bone of the face. It forms the lower jaw and holds the lower teeth in place. The mandible also provides attachment for muscles important in chewing.
Maxilla
The maxilla forms the upper jaw and holds the upper teeth in place. It also contributes to the formation of the floor of the orbit, the roof of the mouth, and the sides and floor of the nasal cavity.
Related Terms
- Temporomandibular joint: The joint that connects the lower jaw (mandible) to the skull.
- Orthognathic Surgery: A surgical procedure to correct conditions of the jaw and face related to structure, growth, sleep apnea, TMJ disorders, malocclusion problems owing to skeletal disharmonies, or other orthodontic problems that cannot be easily treated with braces.
- Bruxism: The involuntary or habitual grinding of the teeth, typically during sleep.
External links
- Medical encyclopedia article on Jaws
- Wikipedia's article - Jaws
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