GROSS ANATOMY

GROSS ANATOMY

BACK UPPER LIMB

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many ribs have cartilaginouse attachment to the sternum
A
14 pair
B
7
C
both are true
D
both are false
Explanation: 

Detailed explanation-1: -True ribs (1–7) attach directly to the sternum via their costal cartilage. The false ribs (8–12) either attach to the sternum indirectly or not at all.

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…

Detailed explanation-3: -The first seven ribs in the rib cage are attached to the sternum by pliable cartilages called costal cartilages; these ribs are called true ribs. Of the remaining five ribs, which are called false, the first three have their costal cartilages connected to the cartilage above them.

Detailed explanation-4: -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-5: -The first seven ribs, referred to as true ribs, each attach to the sternum with a piece of cartilage. The next five ribs (8-12) are called false ribs, with ribs 8-10 attaching by cartilage to the sternum via a com-mon costal cartilage. Ribs 11 and 12 are free at the anterior border and are called floating ribs.

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