Which of the following pairs correctly corresponds to the number of pairs of ribs in the human body?

The human body typically has 12 pairs of ribs, making this the correct answer. Each pair of ribs articulates with a thoracic vertebra in the spine, and collectively, they serve to protect vital organs such as the heart and lungs, as well as support the structure of the thoracic cavity.

Ribs are categorized into true ribs, false ribs, and floating ribs. The first seven pairs are classified as true ribs because they attach directly to the sternum via costal cartilage. The next three pairs are known as false ribs, as they do not attach directly to the sternum but rather connect to the seventh rib's costal cartilage. Finally, the last two pairs are considered floating ribs because they do not attach at all to the sternum, ending freely in the abdominal muscles.

Understanding the total number of rib pairs and their classification is essential in anatomy, as it provides insights into the rib cage's structure and function in protecting and supporting the thoracic organs.