In anatomy, the axis (from Latin axis, "axle") is the second cervical vertebra (C2) of the spine, immediately inferior to the atlas, upon which the head rests. The spinal cord passes through the axis.

Oct 30, 2023 · The axis is the second vertebra of the vertebral column, located in the superior portion of the cervical region of the spine. It articulates superiorly with the atlas, and inferiorly with the third cervical vertebra. The axis can be divided into anterior and posterior components.

Dec 7, 2022 · Learn what is axis/C2 vertebra, where it is located; Find out about its parts, markings, articulations, & functions with picture

Sep 10, 2024 · The axis is the second cervical vertebra, commonly called C2. It is an atypical cervical vertebra with unique features and important relations that make it easily recognisable. Its most prominent feature is the odontoid process (also know as the dens or peg), which is embryologically the body of the atlas (C1) 1,2 .

At the atlantoaxial joint, the C2 spinal nerve exits the spinal cord through a small bony hole or foramen above the C2, called the intervertebral foramen. This nerve has a sensory root and a motor root. The C2 dermatome is an area of skin that receives sensations through the C2 nerve.

Oct 24, 2023 · The C2 vertebra, aka the axis, is the primary weight-bearing bone of the upper cervical region(see Image. Second Cervical Vertebra). C2's hallmark feature is the odontoid process, aka dens, which is the bony projection extending cranially from its vertebral body.

Mar 9, 2025 · The axis (C2) vertebra represents a crucial component of the upper cervical spine, demonstrating unique anatomical features that enable specialized head movements while maintaining stability.

The Axis (C2 vertebra) also known as epistropheus forms the pivot upon which the first cervical vertebra (the Atlas), which carries the head, rotates. The axis is composed of a vertebral body, heavy pedicles, laminae, and transverse processes, …

Aug 8, 2018 · The second cervical vertebra, commonly known as C2 is also called the axis. It is a peculiar cervical vertebra which possesses distinctive attributes and significant relations that facilitates its detection.

Apr 26, 2017 · The axis is the second cervical vertebra (C2). The axis articulates with: the atlas (C1) above, forming the atlanto-axial joint. C3 below, forming the C2-C3 joint complex via the paired facet joints and the disc joint. NOTES: What would have been the body of the atlas (C1 above) fused onto the axis instead, creating the odontoid process, aka ...