In the first two parts of my series about the four key muscular pumps — what I call bio-pumps or life pumps — you learned about the existence of your body’s natural pumps and how they work.
Along the way, we’ve seen how human evolution has spurred the movement of key bodily fluids and what they do behind the scenes to help us survive and support optimal functioning all over our body.
Now, it’s time to take a brief look at how your body’s natural pumping systems support your health via the movement of key bodily fluids.
Why fluids need pumps
Blood requires the action of the heart, which is greatly assisted by the action of muscles. When muscles contract, they push blood toward the heart via the veins. When muscles relax, they absorb fresh, oxygenated blood via the arterial and capillary systems.
The circulatory system delivers blood via microcirculation to a myriad of cell aggregates throughout the body, at which time those fluids become interstitial or intercellular fluids.
Once delivered into close proximity of the cell aggregates, osmosis and diffusion become transport mechanisms for both the nutrition going in and waste going out of the cells.
The process of diffusion is only effective over very short distances. For example, it takes about 3.5 seconds to diffuse the diameter of one cell. But it would take 11 years for diffusion to carry a molecule 10 cm or about 4.5 inches!
With this in mind, you can more easily envision how movements of the body, which act to pump fluids into and out of areas where the transporting is relatively passive, are important. In fact, wherever circulation is chronically blocked, there is stagnation of fluids, result