Axis (C2) vs Mandible
| Özellik | Axis (C2) | Mandible |
|---|---|---|
| Latince Adı | Axis | Os mandibulae |
| Tür | Bone | Bone |
| Vücut Sistemi | Skeletal | Skeletal |
| Vücut Bölgesi | Spine | Face |
| İşlev | The second cervical vertebra that provides a pivot point for rotation of the head. The dens (odontoid process) projects superiorly and acts as the axis around which the atlas rotates. | The only movable bone of the skull, forming the lower jaw. Essential for mastication (chewing), speech articulation, and maintaining the lower dental arch. |
| Klinik Önemi | Odontoid fractures are common cervical spine injuries, especially in elderly patients. Hangman's fracture involves bilateral pars interarticularis fractures of C2. Atlantoaxial instability occurs in rheumatoid arthritis and Down syndrome. | Mandibular fractures are the second most common facial fractures. The inferior alveolar nerve runs through the mandibular canal and can be damaged during wisdom tooth extraction. Temporomandibular joint disorders cause … |
| FMA ID | 12520 | 52748 |
Full structure pages
Axis (C2)
Axis
The second cervical vertebra, the axis provides the pivot around which the head rotates. Its defining feature is the dens, or odontoid process, a tooth-like projection that extends superiorly from the body to articulate with …