Answer
In human physiology, filtration is what allows for different salts, nutrients, water, and other solutes to leave the bloodstream and enter the tissue where they can serve their function. It is also how the kidneys filtrate waste from the blood.
Work Step by Step
Filtration is the process by which a physical pressure forces fluid through a selectively permeable membrane. In the human body, filtration is mostly seen in the blood capillaries, which are responsible for the transfer of oxygen and other nutrients from the bloodstream to other tissues. The blood pressure is what forces these molecules to pass through the capillary wall and into the tissue where it is needed. Filtration is also what helps the kidneys clean the blood from any waste which in turn is eliminated through urine.
