The atlas is the topmost vertebra and the axis (the vertebra below it) forms the joint connecting the skull and spine. The atlas and axis are specialized to allow a greater range of motion than normal vertebrae. They are responsible for the nodding and rotation movements of the head.

2022年12月1日 · The atlas is a thin ring-shaped bone that does not resemble the typical vertebrae, thus being classified as an atypical vertebra. It is the most delicate of all the 7 cervical vertebrae and lacks a vertebral body and spinous process.

2023年10月30日 · The atlas is a ring shaped bone that does not contain a vertebral body or a spinous process and is therefore classified as an atypical vertebra. Instead of a vertebral body, the atlas is made up of an anterior and posterior arch, which are joined by …

2024年9月5日 · The atlas is the first cervical vertebra and articulates with the occiput of the head and the axis (C2). It differs from the other cervical vertebrae in that it has no vertebral body and no spinous process. Instead, the atlas has lateral masses which are connected by an anterior and posterior arch. Each lateral mass contains a superior ...

2025年2月20日 · The C1 vertebra, known as the atlas, is the superior-most vertebra in the spinal column. It plays vital roles in the support of the skull, spinal cord, and vertebral arteries and provides attachment points for several muscles of the neck.

The Atlas (the first cervical vertebra - C1) differs from the other cervical vertebrae in that it has no body or spinous process. It is comprised of two bony arches with two bony masses laterally. It articulates with the Occiput above and C2 (the Axis ) below.

2023年12月6日 · Atlas vertebra C1 vertebra C1 vertebrae Atlases The atlas (plural: atlases) is the first cervical vertebra, commonly called C1. It ... Gross anatomy. The atlas is composed of an anterior arch and a posterior arch, paired lateral masses, and paired transverse processes. It does not have a vertebral body, instead the dens of the axis sit where a ...

Discover the unique features of the atlas, the first cervical vertebra, including its structure, ossification, variations, and clinical correlates.

2020年11月24日 · Atlas is the most cranial vertebra in the vertebral column supporting the skull via condylar surface. Atlas. Anterior aspect. Atlas. The top aspect. Note the absence of the corpus and presence of two massive structures made by fused superior and inferior articulatory processes – massae laterales. Atlas. Inferior aspect.

2022年11月2日 · Introduction to the Atlas bone anatomy: The atlas bone is the first of seven cervical vertebrae (vertebra cervicalis I or C1). It supports the weight of the skull. The name for the bone was derived from a deity of Greek mythology called Atlas, who supported the heavens.