Why is the sternum known to be bicephalic?

Question

Why is the sternum known to be bicephalic? (A) It is made up of two different bones. (B) It has two articulation surfaces on its ventral end. (C) It has two articulation surfaces on its dorsal end. (D) Both (a) and (b)

Tardigrade Admin · Accepted Answer

There are 12 pairs of ribs. Each rib is a thin flat bone connected dorsally to the vertebral column and ventrally to the sternum. It has two articulation surfaces on its dorsal end and is hence called bicephalic.

Q. Why is the sternum known to be bicephalic?

It is made up of two different bones.

It has two articulation surfaces on its ventral end.

It has two articulation surfaces on its dorsal end.

Both (a) and (b)

There are 12 pairs of ribs. Each rib is a thin flat bone connected dorsally to the vertebral column and ventrally to the sternum. It has two articulation surfaces on its dorsal end and is hence called bicephalic.