How many vertebrae compose the vertebral column in humans?

• A. 26 vertebrae
• B. 30 vertebrae
• C. 33 vertebrae
• D. 35 vertebrae

Answer: (C)

The vertebral column in humans is composed of 33 vertebrae. This total includes several distinct sections: 7 cervical vertebrae in the neck, 12 thoracic vertebrae in the chest region, 5 lumbar vertebrae in the lower back, 5 sacral vertebrae that are fused together to form the sacrum, and 4 coccygeal vertebrae that are fused to form the coccyx (tailbone).

The composition of the vertebral column is crucial for providing structural support, protecting the spinal cord, and allowing for flexibility and movement of the spine. The number 33 refers to the total vertebrae when considering both the individual and fused vertebrae, which makes it a precise count.

Other options do not represent the correct anatomy of the human vertebral column. Some may account for only the movable vertebrae or not include the coccygeal and sacral components appropriately.