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A

Anonymous

Nov 14, 2024

How many pairs of ribs articulate directly with the sternum?

In humans, there are typically 12 pairs of ribs. The first seven pairs are directly connected to the sternum by costal cartilages and are referred to as true ribs. The 8th, 9th, and 10th pairs, known as false ribs, do not attach directly to the sternum; instead, they are indirectly connected through the costal cartilage of the 7th rib. This anatomical arrangement raises an interesting question: how many pairs of ribs articulate directly with the sternum?

3 Answers

A
Anonymous

Jan 14, 2025

There are 12 pairs of ribs. Each rib is a curved, flattened bone that contributes to the wall of the thorax. The ribs articulate posteriorly with the T1-T12 thoracic vertebrae, and mist attach anteriorly via their costal cartilages to the sternum.
A
Anonymous

Jan 15, 2025

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. The 8th, 9th, and 10th pairs—false ribs—do not join the sternum…Explanation:

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