ANATOMY
THE VERTEBRAL COLUMN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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4
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6
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8
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12
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Detailed explanation-1: -Most people are born with 12 ribs on each side of the body, making a total of 24 ribs. Some people are born with more than 24 ribs. These extra ribs are called supernumerary ribs.
Detailed explanation-2: -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 directly but are connected to the 7th rib by cartilage.
Detailed explanation-3: -There are twelve pairs of ribs. Each rib articulates posteriorly with two thoracic vertebrae by the costovertebral joint. An exception to this rule is that the first rib articulates with the first thoracic vertebra only.
Detailed explanation-4: -It consists of the 12 pairs of ribs with their costal cartilages and the sternum ([link]). The ribs are anchored posteriorly to the 12 thoracic vertebrae (T1–T12). The thoracic cage protects the heart and lungs. The thoracic cage is formed by the (a) sternum and (b) 12 pairs of ribs with their costal cartilages.