The answer is extracellular matrix
Extracellular matrix is a term used in biology for molecule outside the cell that has a role in structural or biochemical function. The example would be collagen and elastin, strong and elastic protein that could be found in the skin. These protein is released by a certain cell, so its location is not inside the cell and it is not cellular.
Answer:
The answer is option D. The retina is interrupted by the optic nerve.
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Plasmids are small DNA fragments that occur in many bacterial cells.
Thalamus relays information from eyes to the visual cortex. Thalamus organizes inputs from sensory organs and routes them to the appropriate areas of the brain. I hope that this is the answer that you were looking for and it has helped you.