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: -Because the last three pairs of ribs, the 8th, 9th, and 10th pairs, do not directly articulate with the sternum, they are referred to as false ribs.
Detailed explanation-2: -According to their attachment to the sternum, the ribs are classified into 3 groups: true, false, and floating ribs.
Detailed explanation-3: -There are three pairs of false ribs. They are intermediate between the true ribs and the floating ribs. They are sometimes called vertebrochondral ribs. They differ from the true ribs because they do not directly articulate with the sternum.
Detailed explanation-4: -The lower five pairs of ribs (ribs eight to twelve) are known as false ribs because their costal cartilages do not articulate directly with the sternum. The costal cartilages of ribs eight to ten connect with the costal cartilages of the ribs above.
Detailed explanation-5: -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.