The Importance Of Diffusion

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Diffusion is important because it is how particles are moved into a cell and out. Diffusion is the movement of a particle from an area of higher concentration to an area of lower concentration (Reasoner 2011). Passive diffusion and facilitated diffusion are the two major types of diffusions. Passive diffusion, also known as simple diffusion, is when particles move freely through the lipid bilayer of the plasma membrane (Tortora and Derrickson 2014). Facilitated diffusion is when and integral membrane helps the particles move across the membrane because the solutes are too highly charged to move through the plasma membrane (Tortora and Derrickson 2014). There is also a carrier-mediated facilitated diffusion, which is when a carrier, also known …show more content…
The solvent, usually water, moves from a hypotonic solution to a hypertonic solution to make an isotonic solution (Reasoner 2011). This helps the body maintain homeostasis. A principle of osmosis is that water molecules move through the plasma membrane, for the solute molecules cannot (Tortora and Derrickson 2014). Solutes are also able to use force, called osmotic pressure, in a solution with impermeable solutes. There are three osmotic conditions referred to as hypertonic, hypotonic, and isotonic, which all describe the state of the cell. In hypertonic state the water will leave the cell causing the cell to shrink. A hypotonic state will make cause water to increase in the cell and may result a cell into bursting. Lastly, and isotonic state where there would be constant equilibrium in the cell because water in moving into and out of the …show more content…
For without diffusion, the cells and body tissues could not the nutrients they needed to help maintain the human body for survival. One example of diffusion in the body is through the respiratory system. As you take in air, oxygen is diffused from the lungs into the bloodstream, while when you breathe out carbon dioxide diffuses into the alveoli and is then removed from the body. The kidney diffuses water out of the urine through the filtration system called nephrons (Reasoner 2011). The digestive system is another region where diffusion occurs. After we consume food, the nutrients that are absorbed by the cells are transferred and carried through the vessels on the other side of the membrane. This is where the blood cells carry the nutrients our body needs and disperses it. A third place diffusion occurs is in our kidneys, for our kidneys help maintain the level of the blood we need through diffusion in the membranes. An example would be when the kidneys move a nutrient, like sodium, into the blood where it is

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