Cartilage:

1. The cellular elements of the cartilages are chondrocytes.

2. The matrix contains a protein called chondrin.

3. It is soft except calcified cartilage.

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4. It is avascular (not supplied with blood vessels).

5. Marrow cavity is absent.

6. Canaliculi are absent.

7. Cartilage is covered by perichondrium.

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Bone:

1. The cellular elements of the bone are osteocytes.

2. The matrix contains a protein called ossein.

3. It is hard due to the deposition of phosphates and carbonates of calcium in the matrix.

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4. It is vascular (supplied with blood vessels).

5. Marrow cavity is present.

6. Osteocytes rinterconnected canaliculi.

7. Bone is covered by periosteum.