Zoology - Locomotion and Movement Question with Solution | TestHub

Ribs are a type of a thin flat bone. Ribs are also termed as bicephalic because it has two articulation surfaces on its dorsal end (towards vertebra). Ribs are of 3 types:

I. True ribs (First 7 pairs): Dorsally attached to the thoracic vertebrae and ventrally connected to the sternum with thehelp of hyaline cartilage.

II. Vertebrochondral or False ribs (8th , 9th and 10th pairs): These ribs do not articulate directly with the sternum but join the 7th rib with the help of hyaline cartilage.

III. Floating ribs (11th and 12th pairs): These ribs are not connected ventrally.