Areolar Tissue is loose connective tissue that consists of a meshwork of collagen, elastic tissue, and reticular fibres-with many connective tissue cells in between the meshwork of fibres. The fibres that form the mesh structure of areolar tissue include:
Normal growth rates for Emerald Green (Thuja occidentalis 'Smaragd') are between 6 to 12 per year once established and tapering off as they reach about 12' to 15'. I'd be suprised to see more than about 18 per year even in ideal conditions.
The Green Giant arborvitae is suitable for planting as a single specimen, as a hedge or to hide or screen an unsightly view. Its shallow roots won't damage foundations or septic systems. However, it reaches 60 feet high, so plant it away from buildings where it has plenty of room to grow.