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Norepinephrine binding to a receptor stimulates the activity of adenylate cyclase.
Dense Regular
Connective tissue characterized by tightly packed collagen fibers aligned in a parallel arrangement, providing strength in one direction.
Protein Fibers
Long, string-like structures composed of proteins that play various roles in the cell, including providing support, shape, and enabling movement.
Ground Substance
The amorphous, gel-like substance surrounding cellular components in connective tissue, providing support and mediating communication between cells.
Extracellular Material
Substances found outside cells, including proteins, salts, and water, that provide structural and biochemical support to surrounding cells.
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