Locomotion and Movement Question 12
12. Select the correct option:
[2019]
(a) $8^{\text{th }}, 9^{\text{th }}$ and $10^{\text{th }}$ pairs of ribs articulate directly with the sternum.
(b) $11^{\text{th }}$ and $12^{\text{th }}$ pairs of ribs are connected to the stemum with the help of hyaline cartilage.
(c) Each rib is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum.
(d) There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs.
Show Answer
Answer : d
Hints & Solutions
(d) There are 12 pairs of ribs in human body. First seven pairs are attached to the sternum ventrally with the help of hyaline carlilage, also called as true ribs. These are called vertebrosternal ribs. The next three pairs (8th, 9 th and 10th) do not articulate directly with the sternum, also called vertebrochondral (false) ribs . The last two pairs (11th and 12th) are the free floating ribs because they are not connected ventrally.
