Flat Bone is Composed Of

Question

Flat bone is composed of
A)cartilage externally and spongy bone internally.
B)compact bone externally and spongy bone internally.
C)compact bone internally and spongy bone externally.
D)cartilage externally and compact bone internally.

Accepted Answer

Flat bones, such as the skull and sternum, are made up of two thin layers of compact bone surrounding a layer of spongy bone. Therefore, the correct answer is that flat bone is composed of compact bone externally and spongy bone internally. Cartilage is not present in adult flat bones.