Atlas Vertebra
Atlas Vertebra - Related Videos
01:30
General Structure of a Vertebra
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2025
A typical vertebra, with the exception of the sacrum and coccyx, consists of a body, a vertebral arch, and seven different projections termed processes. The anterior portion of the vertebrae, the body, supports about half the body’s weight. The vertebral bodies progressively increase in size and thickness from the cervical region to the lumbar region of the vertebral column. The intervertebral discs present between the bodies of adjacent vertebrae firmly unites them, forming a continuous column.
03:38
Developing a Cerebral Blood Flow Atlas for Blood Flow Mapping
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2025
Source: Tan, Z., et al., Construction and Application of Cerebral Functional Region-Based Cerebral Blood Flow Atlas Using Magnetic Resonance Imaging-Arterial Spin Labeling. J. Vis. Exp. (2024).This video demonstrates the method to construct a cerebral blood flow atlas by integrating magnetic resonance imaging or MRI-arterial spin labeling data with segmented brain regions, visualizing blood flow patterns, and quantifying flow levels across functional areas.
09:08
Production of Tissue Microarrays, Immunohistochemistry Staining and Digitalization Within the Human Protein Atlas
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Cited by 202 •
2012
Tissue microarrays allows for an efficient method to gain concurrent information from a multitude of tissues. Representative parts of tissues are assembled into a single paraffin block. Sections from the block are used for immunohistochemistry and analysis of protein expression patterns. Digital scanning generates corresponding images for distribution of data.
07:30
3D Printing Model of a Patient's Specific Lumbar Vertebra
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Cited by 4 •
2023
This study aims to create a 3D-printed model of a patient-specific lumbar vertebra, which contains both the vertebra and spinal nerve models fused from high-resolution computed tomography (HRCT) and MRI-Dixon data.
09:29
Stereotactic Atlas-Guided Laser Capture Microdissection of Brain Regions Affected by Traumatic Injury
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Cited by 3 •
2017
We describe the use of laser capture microdissection to obtain samples of distinct cell populations from different brain regions for gene and microRNA analysis. This technique allows the study of differential effects of traumatic brain injury in specific regions of the rat brain.
FAQs
The anterior and posterior arches connect the lateral masses into a ring that supports the skull through the superior articular facets. These facets receive the occipital condyles, allowing the load of the head to pass through the atlas rather than through a vertebral body. This architecture illustrates how specialized shape can adapt a vertebra for support and movement.
The superior articular facets connect the atlas with the occipital condyles at the atlanto-occipital joint, where flexion and extension produce movements such as nodding. Its inferior articular facets connect with the axis, or C2, creating the structural relationship that contributes to head rotation. Thus, the atlas participates in distinct movements through two neighboring joints.
Unlike most vertebrae, the atlas lacks both a vertebral body and a spinous process. Its arches and lateral masses instead form a ring suited to supporting the skull and accommodating its articular connections. This contrast demonstrates how vertebral structure changes along the column when a segment must prioritize head support and specialized cervical motion.
The atlas and axis form a linked upper-cervical arrangement in which the atlas contributes to head rotation through its relationship with C2. At the same time, the atlas connects above with the skull for nodding-related flexion and extension. Studying both relationships helps distinguish the motions associated with the atlanto-occipital and atlas-axis regions.
In anatomy, the atlas provides a clear example of regional specialization because its missing body and spinous process are replaced by arches and lateral masses. In biomechanics, its facets and joint relationships help explain how skull weight is supported while cervical motion remains possible. These features make it useful for linking structure with movement.
Clinical assessment of cervical injuries must account for the atlas because it occupies the uppermost connection between the skull and vertebral column. Its arches, lateral masses, and articular relationships are directly relevant to understanding how this region supports the head and permits motion. Focusing on these structures connects anatomical examination with cervical biomechanics.