MEDICAL
THORACIC WALL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Bones of the thoracic cavity that are attached to vertebrae only (not attached to sternum or another rib by costal cartilage); lowest two false ribs
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floating ribs
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false ribs
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true ribs
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loose ribs
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Explanation:
Detailed explanation-1: -Ribs 8–12 are called false ribs (vertebrochondral ribs). The costal cartilages from these ribs do not attach directly to the sternum.
Detailed explanation-2: -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 most attach anteriorly via their costal cartilages to the sternum. There are 12 pairs of ribs.
Detailed explanation-3: -The most superior rib is designated rib 1 and it articulates with the T1 thoracic vertebrae. The rib below that is rib 2, and it connects to the T2 thoracic vertebra, and so on. Ten of the twelve ribs connect to strips of hyaline cartilage on the anterior side of the body.
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