![](https://upload.wikimedia.org/wikipedia/commons/thumb/3/37/Wilson1900Fig2.jpg/800px-Wilson1900Fig2.jpg)
*[Original figure legend: "General view of cells in the growing root-tip of the onion, from a longitudinal section, enlarged 800 diameters. a. non-dividing cells, with chromatin-network and deeply stained nucleoli; b. nuclei preparing for division (spireme-stage); c. dividing cells showing mitotic figures; e. pair of daughter-cells shortly after division."](By Edmund Beecher Wilson - Figure 2 of: <a href="//commons.wikimedia.org/wiki/Edmund_Beecher_Wilson" title="Edmund Beecher Wilson">Wilson, Edmund B.</a> (<span style="white-space:nowrap">1900</span>) The cell in Development and Inheritance (2nd ed.), <a href="//commons.wikimedia.org/wiki/Category:New_York" title="Category:New York">New York</a>: The Macmillan Company, Public Domain, <a href="https://commons.wikimedia.org/w/index.php?curid=3155599">Link</a>)*
Everyone knows that a person must constantly consume food, that he must live and do something. If everything is clear with the reception of food, it should be put in the mouth, it's good to worry if the food is not liquid and swallowed. Then the process is called digestion of food. This is a very complex process in which the microflora of the stomach, hydrochloric acid, which kills harmful bacteria and promotes the dissolution of food and also the process of autolysis, is involved ... As a result of all these processes, substances are formed that are absorbed into the blood and are spread throughout the body with the help of blood flow. It should be noted that the resulting substances become acid after digestion, although initially they were alkaline. For example, packaged juices have nothing to do with fresh fruit. Juices are processed, so create an acidic environment, fruits (most) are alkaline. These are the results of digestion.
How do the substances necessary for our cells get into these cells. All this happens under the control of acid-base balance. First, we will determine what is an alkaline medium, and what is an acid medium. Using the example of water, we know that its medium is neutral, since the amount of hydrogen ions (H+) is equal to the amount of hydroxide ions (OH-). Conditionally, plus and minus equalize each other. If the amount of hydrogen ions becomes larger, then such medium becomes acidic and has a positive charge sign. Conversely, if the hydrogen ions become smaller, the medium becomes alkaline and has a negative charge. As in electrical processes, and in ion-exchange processes, the movement proceeds from a plus, from a greater potential, to a minus, to a lower potential. Or in our case, from the acid medium to the alkaline medium.
Nutrients are necessary for the vital activity of cells, are in the blood, which has 7.35-7.45 **[pH](https://en.wikipedia.org/wiki/PH)**. The path to be overcome by these substances is as follows:
**From the blood to the lymph
From the lymph - into the intercellular space
From the intercellular space - into the cell**

![](https://upload.wikimedia.org/wikipedia/commons/thumb/d/da/Cell_membrane_detailed_diagram_en.svg/877px-Cell_membrane_detailed_diagram_en.svg.png)
*[Detailed diagram of lipid bilayer cell membrane](By <a href="//commons.wikimedia.org/wiki/User:LadyofHats" title="User:LadyofHats">LadyofHats</a> Mariana Ruiz - Own work. Image renamed from <a href="//commons.wikimedia.org/w/index.php?title=File:Cell_membrane_detailed_diagram.svg&amp;action=edit&amp;redlink=1" class="new" title="File:Cell membrane detailed diagram.svg (page does not exist)">File:Cell membrane detailed diagram.svg</a>, Public Domain, <a href="https://commons.wikimedia.org/w/index.php?curid=6027169">Link</a>)*

All of them have membrane bounding membranes. Free movement does not occur. Movement is possible only under the condition from an acid medium to an alkaline one. Therefore, lymph should be more alkaline than blood, so that substances can move in the right direction. Further, the intercellular space should be more alkaline than lymph. And the cell has an even more alkaline composition compared to the intercellular space. Thus, we have a built-up direct flow of nutrients into the cell.

***pH in living systems
 Compartment 	pH
Gastric acid 	1.5-3.5
Lysosomes 	4.5
Human skin 	4.7
Granules of chromaffin cells 	5.5
Urine 	6.0
Cytosol 	7.2
Blood (natural pH) 	7.34–7.45
Cerebrospinal fluid (CSF) 	7.5
Mitochondrial matrix 	7.5
Pancreas secretions 	8.1***

What happens if this balance is violated. Naturally, if in some area, acidified, the process of movement stops and the cells do not get food, they simply starve. This is possible, with age due to malnutrition throughout life. Which in turn causes certain senile diseases ...
In order for the nutrient delivery process to work properly, the balance must be in the right ratio, from the acidic one constantly falling to the alkaline one. Only in this case, all organs will receive on time nutrition and produce the necessary processes for life, and we live and enjoy life.

**[pH](https://en.wikipedia.org/wiki/PH)**


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