ANATOMY
THE VERTEBRAL COLUMN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2
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3
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7
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12
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Detailed explanation-1: -There are two pairs of floating ribs present in human body. There are usually 12 pairs of ribs. The 11th and 12th pairs of ribs are called floating ribs because these ribs do not attach to the sternums or to another rib.
Detailed explanation-2: -There are two pairs of floating ribs and they are the most inferior of the ribs. They are different from the other ribs of the thoracic region because they do not articulate anteriorly with the sternum or the costal cartilage of other ribs.
Detailed explanation-3: -Floating ribs are the 11th and 12th pairs of ribs.
Detailed explanation-4: -That’s because the rib cage, made up of 12 pairs of ribs, doesn’t fully attach to other bones in the same way at all points. Seven pairs of ribs attach directly to the sternum, at the front of the chest, through cartilage that forms at the end of each rib.
Detailed explanation-5: -However, the floating ribs are the ribs that do not articulate with the sternum at all; they are the distal two ribs. The true ribs articulate with the sternum by the sternocostal joints. The first rib is an exception to that rule; it is a synarthrosis.