Questions and Answers
What is the first cervical vertebra called?
What unique features does the Atlas have?
The Atlas has no body and no spinous process but has large superior facets.
The Atlas allows the head to move in a 'no' motion.
False
What is the second cervical vertebra called?
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What motion does the Axis allow?
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What is the Dens?
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Study Notes
Atlas (First Cervical Vertebra) Overview
- Known as the Atlas, it supports the head.
- Lacks a body and spiny process, featuring large superior facets.
- Superior facets articulate with occipital condyles, facilitating nodding ("yes") and side tilting movements.
Atlas, Lateral View
- Visualization reveals the structure and alignment relative to adjacent vertebrae.
Axis (Second Cervical Vertebra) Overview
- Referred to as the Axis, it allows significant rotation of the head, enabling "no" motions.
- Essential for head mobility and positioning.
Dens
- The Axis exhibits the Dens, a modified process on its small body.
- Dens fits into the Atlas' enlarged vertebral foramen, allowing the Atlas to rotate around it for head rotation.
Axis, Lateral View
- Provides insight into the Axis's structure and its connection to surrounding vertebrae.
Atlas and Axis Articulated, Superior View
- Highlights the articulation between Atlas and Axis, illustrating their joint function and interdependence.
Fifth Cervical Vertebra, Superior View
- Details the anatomical structure and unique features of the fifth cervical vertebra.
Fifth Cervical Vertebra, Lateral View
- Offers a profile view to understand its placement and relation with other cervical vertebrae.
Anterolateral View
- Reveals additional perspective on cervical vertebrae anatomy, potentially demonstrating alignment and structural connections.
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Description
Test your knowledge on the cervical vertebrae with this set of flashcards focused on Chapter 7. Learn about the structure and function of the first cervical vertebra, the Atlas, including its role in supporting the head and allowing for movement. Perfect for students studying anatomy and vertebral structures.
