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Anatomy of the Spine

Головна English Anatomy of the Spine




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The vertebral column is also called the spinal column or backbone. It’s made up of 33 vertebrae that are separated by spongy disks and classified into 4 distinct areas. The cervical area consists of 7 bones in the neck. The first cervical vertebra supports the skull. The thoracic spine consists of 12 bones in the back area; the lumbar spine consists of 5bones in the lower back area; 5 sacral bones; and 4 coccygeal bones (the number of coccygeal bones can vary from 5 to 3).

Disks between each vertebrae help absorb shock. By adulthood, the 5 sacral vertebrae fuse to form 1 bone, and the 4 coccygeal vertebrae fuse to form 1 bone.

The spinal cord is a bundle of nerves. It passes through the center of the vertebral column. The spine protects the spinal cord and allows nerves for your arms, legs, and organs to exit and enter at each level.

Online Medical Reviewer:
Joseph Campellone MD

Online Medical Reviewer:
Marianne Fraser MSN RN

Online Medical Reviewer:
Raymond Kent Turley BSN MSN RN



Date Last Reviewed:
2/1/2023




© 2000-2024 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional’s instructions.

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