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Solution


Q.

Select the correct option.                             [2019]
1 There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs.  
2 8th, 9th and 10th pairs of ribs articulate directly with the sternum.  
3 11th and 12th pairs of ribs are connected to the sternum with the help of hyaline cartilage.  
4 Each rib is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum.  

Ans.

(1)

Ribs 1-7 are classified as true ribs (vertebrosternal ribs), ribs 8-10 are false ribs (vertebrochondral ribs) and ribs 11 and 12 are floating ribs (vertebral ribs).