What is Appositional Growth?
Appositional growth is the process of growth that involves the addition of new cells to the surface of the tissue. It is commonly observed in tissues that do not have the capacity to divide, such as the outer layer of bone tissue and the skin. During appositional growth, the stem cells present in the tissue differentiate into specialized cells that add to the surface of the tissue.
In bone tissue, appositional growth occurs at the outer surface of the bone. The stem cells present in the periosteum differentiate into osteoblasts, which produce new bone tissue, resulting in an increase in bone thickness. In the skin, appositional growth occurs at the basal layer, where the stem cells differentiate into keratinocytes, resulting in the formation of a new layer of skin.
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Difference Between Interstitial and Appositional Growth
The major difference between interstitial and appositional growth lies in the location and mechanism of growth. Interstitial growth occurs within tissues through cell division and enlargement, while appositional growth involves the addition of layers onto the surface.
In this article, we will cover the difference between interstitial and appositional growth in detail.
Table of Content
- What is Interstitial Growth?
- What is Appositional Growth?
- Differences Between Interstitial Growth and Appositional Growth
- Conclusion – Difference Between Interstitial and Appositional Growth
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- FAQs on Difference Between Interstitial and Appositional Growth