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Differentiate between: Spongy bone and compact bone.

Answer
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Hint: Bones are the skeletal structure which gives shape to our body. There are two types of bones i.e. spongy bone and compact bone. They form long bones that are dense and hard. These bones provide strength, structure and mobility.

Complete answer:

Spongy BoneCompact Bone
It is also known as cancellous or trabecular bone.It is known as cortical bone.
LocationIt is found in long bones and is surrounded by compact bones.It surrounds the spongy bone.
NatureIt is spongy, light and soft.It is heavy and compact.
StructureIt is made up of trabeculaeIt is made up of osteons
LayerThe fill the inner layer of the bone.They fill the outer layer of the bone.
CavityBone marrow cavity is absent.Bone marrow cavity present at the centre.
PositionIt forms the ends of long bonesIt forms the shaft of long bones.
FunctionIt is the main structure for support, protection, and movement in our body.It is involved in important functions of bones like blood cell production and ion exchange.
Bone marrowIt contains yellow bone marrow.It contains red bone marrow.


Note: The spongy bone receives nutrients from the blood vessels that pass through the compact bones. The arteries pass through the foramen which is a small opening in the diaphysis. The spongy bone reduces the bone density and helps the long bone ends to compress when the stress is applied to the bone. Thus the spongy bones are present in the areas where the stress comes from many directions.