ANATOMY

Detailed explanation-1: -In humans there are normally 12 pairs of ribs. The first seven pairs are attached directly to the sternum by costal cartilages and are called true ribs.

Detailed explanation-2: -There are seven pairs of true ribs. They are the most superior of the thoracic ribs. They are sometimes called vertebrosternal ribs. They differ from false and floating ribs because they directly articulate with the sternum by means of their costal cartilages.

Detailed explanation-3: -The true ribs are the ribs that directly articulate with the sternum with their costal cartilages; they are the first seven ribs.

Detailed explanation-4: -The true ribs include rib pairs 1-7, with each rib articulating posteriorly to the thoracic vertebrae and anteriorly to the sternum via costal cartilages.

Detailed explanation-5: -Ribs 1-7 are called the true ribs. Each true rib connects to its own strip of costal cartilage, which in turn connects to the sternum. Ribs 8-12 are called the false ribs.