Question

Which of the following statement is not true regarding ribs in humans?

• A. Rib is a flat bone connected dorsally to vertebral column
• B. Ribs are ventrally connected to sternum through hyaline cartilage
• C. Vertebro- chondral ribs directly articulate with sternum with the help of hyaline cartilage.
• D. In humans ribs are bicephalic

Answer 1

Answer: (C)

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.