Differentiate between neurons on the basis of their functions.

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Based on the presence of matrix there are two types of bones present in the human body: 

1. Spongy bones:

Haversian system is absent in these bones. Rectangular matrix is arranged in the form of trabeculae. It contains red bone marrow. 

2. Compact bones: 

Matrix of these bones shows haversian system without any space between the lamellae.

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