The chin is the forward pointed part of the anterior mandible (mental region) below the lower lip. A fully developed human skull has a chin of between 0.7 cm and 1.1 cm.

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).

Your jaw is made up of two bones: upper jaw (maxilla) and lower jaw (mandible). Learn about the anatomy of the jaw and why it’s important.

2025年3月11日 · The projecting chin, at the lower part of the body in the midline, is said to be a distinctive characteristic of the human skull. On either side of the chin is the mental foramen, an opening for the mental branch of the mandibular nerve, the third division of the fifth cranial nerve.

The meaning of CHINBONE is mandible; especially : the median anterior part of the human mandible.

2023年4月1日 · Branches of the inferior alveolar nerve commonly run through these extra foramina and can confer a risk for inadequate anesthesia during surgical procedures involving the mandible. [14] A cleft chin can result from the inadequate or absent fusion of the mandibular symphysis during embryonic development.

2022年2月7日 · Learn about the mandible/lower jaw bone definition, where it is located, its anatomy, parts (ramus, body, processes), structure, & what it does, with labeled diagram

2020年12月3日 · Jaw pain can occur for many reasons, including teeth grinding, sinus infections, and TMJ. Learn what jaw pain in different locations (on left or right side, by the ear) can mean, common causes of jaw pain symptoms, and how to find jaw pain relief and treatment.

2025年3月7日 · Learn jaw bone anatomy, understanding teeth structure, and related facial morphology, including mandible and maxilla bones, dental anatomy, and craniofacial complex.

While major jaw fractures are usually present in conjunction with other severe injuries, a less significant blow, such as an impact to the chin from a bicycle or trampoline fall, can result in a fracture of the mandibular condyles and/or posterior teeth.