Question

Why the last two pairs of ribs are called floating ribs​

Answer 1

Explanation:

The phrase floating rib or vertebral rib (Latin: costae fluctuantes) refers to the two lowermost, the eleventh and twelfth rib pairs; so-called because they are attached only to the vertebrae–and not to the sternum or cartilage of the sternum.

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Answer 2

Answer:

The last two pairs of ribs at the very bottom of the rib cage do not attach to the sternum at all. These ribs are referred to as "floating ribs" as their only attachment is found at the back of the rib cage, anchored to the vertebrae of the spine

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