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. The defining feature of the axis is its strong bony protrusion known as the dens, which rises from the superior aspect of the bone.

Dec 7, 2022 · The axis is 1 of the only 2 vertebrae with a unique name and purpose. It is the 2nd bone out of the 7 in the uppermost section of the spinal column, the cervical vertebra. It is also referred to as the C2 vertebra or epistropheus (rarely).

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.

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 .

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, …

Nov 2, 2022 · Inferior to the atlas bone (C1) is the second cervical vertebra (C2), which is also referred to as the axis bone (axis, vertebra cervicalis II). One of the most prominent features of the axis bone is a superior, tooth-like projection called the odontoid process (or dens).

Dec 26, 2023 · The axis vertebra sits right at the top of the spine, below the atlas vertebra, and plays a key role in the neck’s movement and stability. Its distinctive feature is the odontoid process, commonly referred to as the dens, which protrudes upward …

Sep 5, 2024 · It consists of seven distinct vertebrae, two of which are given unique names: The first cervical vertebrae (C1) is known as the atlas. The second cervical vertebrae (C2) is known as the axis. In this article, we shall look at the anatomy of the cervical vertebrae – their characteristic features, articulations and clinical relevance.

Feb 3, 2024 · The axis ‌bone, also ⁤known‍ as the second cervical vertebra or⁣ C2,‍ plays a ⁣crucial⁤ role in ‌the structure and function of the spine. ‍It is a unique‍ bone that ⁤allows for⁣ the‍ pivotal⁢ movement of the head, enabling the rotation of the skull.

Nov 13, 2024 · The C2 vertebra, known as the axis, sits directly below the atlas, or C1. It is recognizable for a distinctive projective structure, known as the “peg,” “odontoid process,” or “dens.” This structure extends upwards into the atlas. It provides a stable point upon which the atlas bone can rotate.