The nurse is aware that small ions such as glucose oxygen and carbon dioxide redistribute themselves through semipermeable membranes by a process called

Diffusion is the correct answer. It is the process by which small ions like glucose, oxygen, and carbon dioxide move through a semipermeable membrane from an area of higher concentration to an area of lower concentration. This movement occurs until equilibrium is reached. Osmosis involves the movement of water molecules across a semipermeable membrane. Blood pressure is the force exerted by blood against the walls of blood vessels and is not directly related to the movement of small ions through membranes. Rehydration is the process of restoring lost fluids in the body and is not related to the movement of ions through membranes.