Nitric oxide acts as a messenger molecule. When the endothelium sends a loosening command to the muscles to promote blood circulation, it produces some nitric oxide molecules that are small and can easily cross the cell membrane. Smooth muscle cells around the blood vessels relax after receiving a signal, causing the blood vessels to dilate.
Nitric oxide also acts in cells of the nervous system. Its effect on peripheral nerve endings. The brain sends out information through the peripheral nerves, providing corresponding nitric oxide to the blood vessels of the perineum, causing the blood vessels to expand and increase blood flow, thereby enhancing the erectile function. In some cases, erectile weakness is due to less nitric oxide produced by nerve endings. "Viagra" can increase the effectiveness of nitric oxide, thereby enhancing erectile function.
The nitric oxide molecules produced by the immune system not only can resist the microbes invading the human body, but also can prevent the proliferation of cancer cells to a certain extent and prevent the spread of tumor cells.
Nitric oxide is a nitrogen compound having a chemical formula of NO, a molecular weight of 30, and a valence of nitrogen of 2. Since nitric oxide carries free radicals, it makes it very chemically active. Has paramagnetic properties. When it reacts with oxygen, it forms a corrosive gas, nitrogen dioxide (NO2). Nitric oxide is a colorless gas under standard conditions, and its liquid state and solid state are blue. Nitric oxide improves the mechanism of action of cardiovascular and cerebrovascular.
Health hazard to the human body
Nitric oxide is the culprit of astronauts with syncope
Excessive production of nitric oxide causes the blood vessels to dilate, which explains why astronauts produce syncope after flying in space and can explain many similar phenomena on land.
The microgravity experienced by astronauts in space is like the feeling of astronauts in space or patients who have been lying in bed for a long time. At this time, people will produce too much vasodilator, nitric oxide. As a result, blood pressure is lowered, blood flowing to the head is reduced, and syncope occurs.
In a trial of rats, researchers at the University of California found that in low-gravity environments, rats produced more nitric oxide, and their blood pressure increased when rats were given a drug that inhibits one of them. This gives the researchers a hint that inhibition of nitric oxide is an effective treatment for astronauts and long-term bed rest patients. The study was published in the July issue of Practical Physiology.
In our normal erect life, gravity causes blood to flow to the lower extremities, so the blood vessels in the lower part of the body contract to ensure that enough blood flows in the opposite direction. In a low-gravity environment, the blood pressure of a person's whole body is the same. When the astronauts return to the earth, the blood vessels in the lower part of their lower body make the blood pressure of the head drop sharply, so when they stand, they inevitably faint.
People see the astronauts walking easily after landing, because they wear pressurized clothes and maintain healthy blood pressure. However, their clothes can only be worn for so long, and it takes a while to adapt to gravity.
The researchers said: "Patients who stay in bed for a long time are similar to astronauts and seem to be unaffected by gravity. Therefore, they will faint when trying to stand.
Harm to the environment
Hazardous properties: Strong oxidizing. It is easy to catch fire when it comes into contact with inflammables and organic matter. Encountered hydrogen explosive combination. Contact with air will give off a brown, acid oxidative brown-yellow mist. Nitric oxide is less active, but is easily oxidized to nitrogen dioxide in the air, which is highly corrosive and toxic.
The product is unstable and quickly converts to nitrogen dioxide in the air to produce a stimulating effect. Nitrogen oxides primarily damage the respiratory tract. In the initial stage of inhalation, there are only mild eye and respiratory irritation symptoms, such as pharyngeal discomfort and dry cough. Delayed pulmonary edema, adult respiratory distress syndrome, chest distress, respiratory distress, cough, sputum, cyanosis, etc. occur after a period of hours to ten hours or more. Can be complicated by pneumothorax and mediastinal emphysema. Delayed obstructive bronchiolitis can occur about two weeks after the pulmonary edema subsides. High concentrations of nitric oxide can cause methemoglobinemia. Chronic effects: mainly manifested as neurasthenic syndrome and chronic respiratory inflammation. Pulmonary fibrosis occurs in individual cases. Can cause dental erosion.
Environmental hazard: It is harmful to the environment and can cause pollution to water, soil and atmosphere.
Explosion hazard: This product is flammable, toxic and irritating.
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