In the embryo, the bones that are first made of fibrous connective tissue are the bones of the:
A)rib cage
B)arms and legs
C)backbone
D)skull

Question

Quizplus · Accepted Answer

The bones of the skull are the first to be made of fibrous connective tissue in the embryo, forming through intramembranous ossification. The other bones listed are made from cartilage that is later replaced by bone through endochondral ossification.

In the Embryo, the Bones That Are First Made of Fibrous