![\"mandible\"](\"https:\/\/cdn.3d4medical.com\/website\/blog\/mandible\/mandible2.jpg\")
\nTwo main parts make up the mandible: <\/p>\n\n\n\n
- The horizontal body<\/strong> <\/li>
- Two vertical rami<\/strong> <\/li><\/ol>\n\n\n\n
The two meet each other on either side and form the angle of the mandible. <\/p>\n\n\n\n
Body\u00a0<\/h2>\n\n\n\n
The body is curved similar to a horseshoe or magnet, and has two borders ?\u2026 <\/p>\n\n\n\n
- Alveolar border:\u00a0contains lower teeth sockets<\/li>
- Base:\u00a0attachment site for digastric muscle\u00a0\u00a0<\/li><\/ul>\n\n\n\n
In the midline of the mandible is the mandibular symphysis.\u00a0During\u00a0development,\u00a0this is the site of fusion for the two halves. The mental protuberance forms in this area to create the shape of the chin.\u00a0<\/p>\n\n\n\n
![\"mandible\"\/](\"https:\/\/cdn.3d4medical.com\/website\/blog\/mandible\/mandible3.jpg\")
Features of the mandible<\/figcaption><\/figure>\n\n\n\n Rami\u00a0<\/h2>\n\n\n\n
The two rami project upwards from the angle of the mandible. They are made up of several landmarks\u2026 <\/p>\n\n\n\n
- Head: articulates with the temporal bone to form temporomandibular joint <\/li>
- Neck: supports the head and is the site of attachment for lateral pterygoid muscle <\/li>
- Coronoid process: attachment site for the temporalis muscle <\/li><\/ul>\n\n\n\n
Foramina\u00a0<\/h2>\n\n\n\n
Within the mandible, two main foramina form openings through the bone for neurovascular structures to travel through. <\/p>\n\n\n\n
- Mandibular foramen:\u00a0located on\u00a0the\u00a0internal surface of the ramus. The inferior alveolar nerve and inferior alveolar artery pass through it. Through this\u00a0foramen,\u00a0they then travel into the mandibular canal, and then exit at the mental foramen.\u00a0\u00a0<\/li>
- Mental foramen: located on the external surface of the body, below the second premolar tooth. The inferior alveolar nerve and artery exit through it. Once the nerve exits, it then becomes the mental nerve.<\/li><\/ul>\n\n\n\n
Virtually peel back the layers of the head with the world’s most advanced 3D anatomy platform, including bone parts, surfaces and landmarks. <\/strong>Download <\/strong><\/a>the latest version of Complete Anatomy today and try it for FREE.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"
In 2015, scientists working in Ethiopia found the earliest known fossil of the ancestral line of humans. This fossil was of the mandible, also known as our jawbone.\u9605\u8bfb\u8be6\u60c5<\/a><\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[316],"tags":[],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/3d4medical.com\/zh-hans\/wp-json\/wp\/v2\/posts\/8872"}],"collection":[{"href":"https:\/\/3d4medical.com\/zh-hans\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/3d4medical.com\/zh-hans\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/3d4medical.com\/zh-hans\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/3d4medical.com\/zh-hans\/wp-json\/wp\/v2\/comments?post=8872"}],"version-history":[{"count":1,"href":"https:\/\/3d4medical.com\/zh-hans\/wp-json\/wp\/v2\/posts\/8872\/revisions"}],"predecessor-version":[{"id":9457,"href":"https:\/\/3d4medical.com\/zh-hans\/wp-json\/wp\/v2\/posts\/8872\/revisions\/9457"}],"wp:attachment":[{"href":"https:\/\/3d4medical.com\/zh-hans\/wp-json\/wp\/v2\/media?parent=8872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/3d4medical.com\/zh-hans\/wp-json\/wp\/v2\/categories?post=8872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/3d4medical.com\/zh-hans\/wp-json\/wp\/v2\/tags?post=8872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- Two vertical rami<\/strong> <\/li><\/ol>\n\n\n\n