Questions and Answers
What are the cervical vertebrae known for?
What is true about the Atlas (C1)?
Does not have body
What characteristic does the Axis (C2) have?
Has dens or odontoid process
Thoracic vertebrae have bodies that are small and round.
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What is a defining feature of lumbar vertebrae?
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The sacrum consists of separate vertebrae in adults.
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The coccyx consists of 4 separate vertebrae in adults.
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What components make up the thoracic cage?
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What constitutes the skeleton of the trunk?
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Study Notes
Classification of Vertebrae
- Cervical vertebrae consist of 7 individual vertebrae, each featuring 2 transverse foramina.
- The Atlas (C1) is unique as it lacks a vertebral body, allowing for nodding motion of the head.
- The Axis (C2) is characterized by the presence of the dens or odontoid process, crucial for rotational movement of the head.
Thoracic Vertebrae
- There are 12 thoracic vertebrae, which have costal facets that enable articulation with ribs.
- Thoracic spinous processes are narrow, pointed, and directed inferiorly, aiding in stability.
Lumbar Vertebrae
- The lumbar region consists of 5 vertebrae with a large body to support weight.
- Lumbar spinous processes are short, square, and blunt, facilitating muscle attachment and movement.
Sacrum and Coccyx
- The sacrum is made up of 5 fused vertebrae in adults, forming the posterior portion of the pelvis.
- The coccyx consists of 4 fused vertebrae in adults, commonly referred to as the tailbone.
Thoracic Cage
- The thoracic cage comprises 12 thoracic vertebrae, the sternum, 12 pairs of ribs, and associated costal cartilages, providing protection for vital organs.
Skeleton of the Trunk
- The trunk's skeleton includes the vertebral column, the sternum, and 12 pairs of ribs, forming a supportive framework for the body.
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Description
This quiz covers the classification of vertebrae with flashcards detailing specific characteristics of different groups. Learn about cervical, thoracic, and specialized vertebrae like the atlas and axis with their unique features and definitions. Ideal for students studying anatomy or related fields.
