How many vertebrae comprise the spine?

The spine is composed of a total of 33 vertebrae in a typical human anatomy. These vertebrae are divided into different regions: 7 cervical vertebrae in the neck, 12 thoracic vertebrae in the upper back, 5 lumbar vertebrae in the lower back, 5 sacral vertebrae that are fused to form the sacrum, and 4 coccygeal vertebrae, which are fused to form the coccyx or tailbone.

This breakdown illustrates how the total number of 33 vertebrae includes both the individual segments and the fused structures at the base of the spine. Understanding the composition and structure of the vertebral column is crucial for a Combat Medic Specialist, as it plays a significant role in understanding injuries and conditions related to the spine.