The cell membrane<span> is selectively permeable to ions and organic molecules and controls the movement of substances in and out of </span>cells<span>. The basic </span>function of the cell membrane<span> is to protect the </span>cell<span> from its surroundings. It consists of the phospholipid bilayer with embedded proteins.</span>
        
                    
             
        
        
        
Answer:
It reduces the diameter of an artery
Explanation:
<em>Atherosclerosis results in the deposition of plaques on the arterial wall. The plaque deposition narrows the diameter of the artery and consequently interferes with the flow of blood through the artery in the process. </em>
Hence, atherosclerosis functions by reducing the diameter of an artery due to plaque deposition.