Which thoracic vertebrae articulate with the ribs?

The correct answer is that the first ten thoracic vertebrae articulate with the ribs. This connection occurs due to the anatomical structure of the thoracic spine, which is specifically designed to support rib attachment and protect the thoracic cavity's vital organs.

Each rib is attached to a corresponding thoracic vertebra through two points: the costovertebral joints and the costotransverse joints. The costovertebral joints are formed between the head of the rib and the bodies of the thoracic vertebrae, while the costotransverse joints occur between the tubercle of the rib and the transverse process of the thoracic vertebra.

In the case of the first ten thoracic vertebrae, each one provides attachment points for the ribs, allowing for the flexibility and mobility of the ribcage during respiration and movement. The last two thoracic vertebrae, specifically T11 and T12, do not articulate with ribs in the same way as the others because they are considered floating ribs; they do not have a direct attachment to the sternum, reflecting the unique characteristics of each thoracic vertebra in how they support rib attachment. Therefore, focusing on the first ten thoracic vertebrae acknowledges their crucial role in the rib