2024年12月20日 · jaw, either of a pair of bones that form the framework of the mouth of vertebrate animals, usually containing teeth and including a movable lower jaw (mandible) and fixed upper jaw (maxilla). Jaws function by moving in opposition to each other and are used for biting, chewing, and the handling of food.

2025年1月20日 · The key parts of your jaw’s anatomy include: Jaw Bones: The TMJ is formed by two bones: the mandible (your lower jawbone) and the temporal bone (a bone on the side of your skull). How Cartilage Supports Jaw Function: A fibrocartilaginous disc sits between these bones, acting like a cushion and allowing for smooth gliding movements.

Learn about the anatomy of the jaw and why it’s important. The jaw is made up of two main parts: Helps form the nose, palate, and orbit (bony socket housing the eyeballs and other supporting structures). Both bones have several muscles, nerves, and blood vessels attached that help keep the jaw hea lthy.

In jawed vertebrates, the mandible (from the Latin mandibula, 'for chewing'), lower jaw, or jawbone is a bone that makes up the lower – and typically more mobile – component of the mouth (the upper jaw being known as the maxilla). The jawbone is the skull's only movable, posable bone, sharing joints with the cranium's temporal bones.

2 天之前 · The temporomandibular joint (TMJ) connects the jawbone (mandible) to the skull (temporal bone) on both sides of the face. It allows movements like. ... The bottom part of the disk is responsible for preventing the disk from rotating too much about the mandibular condyle. The joint capsule, articular eminence, condyle, and upper region of the ...

2024年9月30日 · Each ramus contains the following bony landmarks: Head – situated posteriorly, and articulates with the temporal bone to form the temporomandibular joint. Neck – supports the head of the ramus, and site of attachment of the lateral pterygoid muscle.

Most of the upper jaw bones (premaxilla, maxilla, jugal, quadratojugal, and quadrate) have been fused to the braincase, while the lower jaw bones (dentary, splenial, angular, surangular, and articular) have been fused together into a unit called the mandible. The jaw articulates via a hinge joint between the quadrate and articular.

2023年8月2日 · To learn more about the relationship between the health and beauty of your smile and the health of your jaw, you first need to understand the anatomy of your jawbone and how it functions. The Anatomy of the Mandible (Lower Jaw) The mandible is the largest and strongest bone in the face and serves as the base for the lower teeth.

2023年12月12日 · Upper Jawbone (plural: maxillae) is one of the eight facial bones that constitute the facial skeleton. It is the second largest bone of the face. As it forms the upper jaw holding the upper set of teeth, it is sometimes referred to as the upper jaw bone. It also forms the lower parts of eye sockets and nasal cavities.

2023年2月25日 · As a whole, the upper jaw is anchored to the nasal bones at the nose's bridge; the frontal, lacrimal, ethmoid, and zygomatic bones within the eye socket; the palatine and sphenoid bones in the roof of the mouth; and the zygomatic bone (cheekbone) at the side, with which it forms the anterior portion of the zygomatic arch.