DENS AXIS Meaning and
Definition
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Dens axis, also known as the odontoid process or odontoid peg, is a small bony projection located on the upper part of the second cervical vertebra (C2) in humans and other mammals. It serves a crucial role in the stability and mobility of the neck.
The dens axis projects upwards from the body of the C2 vertebra, extending into the ring-shaped opening of the first cervical vertebra (C1), known as the atlas. This articulation between the dens and the atlas forms a pivot joint, called the atlantoaxial joint, which allows for the rotational movements of the neck, such as nodding or shaking the head.
The dens axis is specially adapted to bear the weight of the skull and distribute it evenly, preventing excessive stress on the delicate spinal cord that passes through the cervical vertebrae. This unique structure provides stability while maintaining the flexibility necessary for range of motion in the neck.
Due to its vital role in supporting head movement, any abnormality in the dens axis can lead to serious complications. Conditions such as dens fractures, dislocation, or abnormalities in its development can impair the function of the atlantoaxial joint, potentially resulting in neck pain, limited mobility, nerve compression, or even paralysis if not properly treated.
Overall, the dens axis is a crucial anatomical structure that allows humans and other mammals to have a flexible and stable neck, facilitating a wide range of head movements while protecting the spinal cord from excessive strain or injury.
Common Misspellings for DENS AXIS
- sens axis
- xens axis
- cens axis
- fens axis
- rens axis
- eens axis
- dwns axis
- dsns axis
- ddns axis
- drns axis
- d4ns axis
- d3ns axis
- debs axis
- dems axis
- dejs axis
- dehs axis
- dena axis
- denz axis
- denx axis
- dend axis
Etymology of DENS AXIS
The term "Dens Axis" has its roots in Latin. "Dens" means "tooth" or "projection" and "Axis" means "axle" or "pivot". In anatomy, the "Dens Axis" refers to the odontoid process, a prominent projection that extends from the second cervical vertebra (C2), also known as the axis. The term "axis" is derived from the Latin word "axis", meaning "pivot" or "axis", as the second cervical vertebra acts as a pivot point for the rotation of the head.
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