Questions and Answers
What is the structure of the first cervical vertebra, the atlas?
The first cervical vertebra, the atlas, has no body. It is formed by the anterior and posterior arches.
How are the vertebrae connected to each other?
The vertebrae are connected to each other using intervertebral discs, ligaments, and joints.
The vertebral column is composed of how many vertebrae?
The vertebral column consists of 32-34 vertebrae.
What are the components of each vertebra?
Signup and view all the answers
What is the additional process present in the second cervical vertebra?
Signup and view all the answers
Study Notes
The Skeleton of the Body
- The skeleton is composed of the vertebral column (spine), ribs, and sternum.
- The vertebral column consists of 32-34 vertebrae, divided into:
Cervical Vertebrae
- 7 vertebrae
- Each vertebra has a unique structure
- The first cervical vertebra, the atlas, has no body, formed by anterior and posterior arches
- The second cervical vertebra, the axial vertebra, has an additional process (tooth) that articulates with the articular surface
Thoracic Vertebrae
- 12 vertebrae
Lumbar Vertebrae
- 5 vertebrae
Sacral Vertebrae
- 5 vertebrae
Coccygeal Vertebrae
- 3-5 vertebrae
- The vertebrae are connected to each other using intervertebral discs, ligaments, and joints
- Each vertebra consists of:
- A body
- An arch
- Processes: three paired and one unpaired
- The vertebral body is directed forward
- The unpaired spinous process is directed backward
- The transverse processes are directed to the sides
- The arch is located behind the body
- The vertebral body and arches limit the vertebral foramen (bell openings)
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
