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Questions and Answers
What is the function of the intervertebral discs?
What is the function of the intervertebral discs?
Which of the following regions of the vertebral column has 5 fused vertebrae?
Which of the following regions of the vertebral column has 5 fused vertebrae?
How many vertebrae are there in an adult human spinal column?
How many vertebrae are there in an adult human spinal column?
Which of the following regions of the vertebral column is movable?
Which of the following regions of the vertebral column is movable?
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At which point in development does the total number of vertebrae peak?
At which point in development does the total number of vertebrae peak?
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Study Notes
Vertebral Column Structure
- The vertebral column, also known as the spine, spinal column, or backbone, is composed of a series of bones called vertebrae.
Vertebral Column Length
- The average length of the vertebral column in an adult male is approximately 71 cm (28 inches).
- The average length of the vertebral column in an adult female is approximately 61 cm (24 inches).
Vertebral Column Regions
Cervical Region
- The cervical region consists of 7 vertebrae (C1-C7).
Thoracic Region
- The thoracic region consists of 12 vertebrae (T1-T12).
Lumbar Region
- The lumbar region consists of 5 vertebrae (L1-L5).
Sacral Region
- The sacral region consists of 5 fused vertebrae (S1-S5).
Coccygeal Region
- The coccygeal region consists of 4 vertebrae (Co1-Co4).
Vertebral Development
- The total number of vertebrae during early development is 33.
- As a child grows, several vertebrae in the sacral and coccygeal regions fuse.
- Adults have 26 vertebrae.
Vertebral Mobility
- The cervical, thoracic, and lumbar vertebrae are movable.
- The sacrum and coccyx are immovable.
Intervertebral Discs
- Intervertebral discs are located between adjacent vertebrae from the second cervical vertebra to the sacrum.
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Description
The vertebral column, also known as the spine, is composed of a series of bones called vertebrae. Learn about the different regions and number of vertebrae in the human body.
