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Vertebral Column Structure and Functions

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Vertebral Column Structure and Functions

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Questions and Answers

Which of the following statements accurately describes the relationship between the cervical, thoracic, and lumbar vertebrae?

The thoracic vertebrae are the smallest and most flexible, while the lumbar vertebrae are the largest and strongest.

The lumbar vertebrae are the largest and strongest, providing support for the lower back, while the cervical vertebrae are the smallest and most flexible, providing support for the head and neck. (correct)

The lumbar vertebrae are the most flexible, allowing for a wide range of motion, while the cervical vertebrae are the smallest and most delicate.

The cervical vertebrae are the largest and strongest, followed by the thoracic, and then the lumbar.

Study Notes

Vertebral Column Structure

A human vertebral column typically has 33 vertebrae.
The top 24 pre-sacral vertebrae are separated by intervertebral discs.
The lower 9 vertebrae fuse in adults, forming the sacrum (5) and coccyx (4).
Vertebrae are named according to their spinal region:
- 7 cervical
- 12 thoracic
- 5 lumbar

Vertebrae Functions

Protection: Vertebrae encase and shield the spinal cord, vital for the nervous system.
Support: They provide structural support for upright posture, sitting, and movement.
Flexibility and Mobility: Intervertebral discs act as cushions between vertebrae, enabling spinal flexibility and movement.

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Description

This quiz explores the structure and functions of the human vertebral column. Learn about the different types of vertebrae, their arrangement, and the crucial roles they play in protecting the spinal cord and supporting the body. Test your knowledge of vertebrae classification and their mobility features.