What is the most important buffer system to maintain the normal pH of the blood

The most important buffer system for maintaining the normal pH of the blood is sodium bicarbonate.

and bicarbonate ions.

Blood is a red, opaque, viscous fluid that flows through a person's blood vessels and heart. Blood is made up of plasma and blood cells, and one liter of plasma contains 900-910 grams of water, 65-85 grams of protein, and 20 grams of low-molecular substances, which contain a variety of electrolytes.

and organic compounds, blood cells include red blood cells and white blood cells.

and platelets.

Sodium bicarbonate and bicarbonate ions.

Under normal conditions in the human body, the pH value of the body is maintained between, that is, slightly alkaline, and the pH value of plasma mainly depends on the ratio of HCO3- and H2CO3 and H2PO4- to HPO42- in plasma, because the human body has HCO3- and H2CO3 and H2PO4- and HPO42- automatic buffering system, which can keep the pH of blood within the normal range and achieve physiological balance.

If the pH value of the body is lower for a long time, it will form an acidic constitution, which will put the body in a sub-healthy state, which is manifested as physical discomfort, tiredness, lack of energy, lack of physical strength, decreased resistance, etc.

The buffer material of plasma includes three main buffer pairs: NaHCO3 H2CO3, Protein Sodium Salt Protein and Na2HPO4 NAH2PO4, among which NAHCO3 H2CO3 is the most important.

There are also buffer pairs of hemoglobin potassium salt, hemoglobin, oxyhemoglobin potassium salt, oxyhemoglobin, K2HPO4, KH2PO4, KHCO3, H2CO3, etc., which are involved in maintaining the constant plasma pH value in red blood cells.

When an acidic or alkaline substance enters the bloodstream, the buffer in the plasma is effectiveofTo reduce the effect of acids or alkaline substances on the plasma pH, especially if the lungs and kidneys maintain the normal function of excreting excess acids or alkalis from the body, the range of fluctuations in the plasma pH is minimal. <>

Hello, the most important blood buffers for maintaining a normal human body are sodium bicarbonate and bicarbonate ions.

Answer]: The relative constancy of the plasma pH depends on the buffering of the blood buffering system, the acid excretion function of the lungs, and the acid and alkali retention function of the kidneys. The buffers in the plasma mainly include NAHCO <>

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Protein sodium salt sung rent protein and nahpo <>

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Three buffer pairs, the most important of which is the Nahco <>

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So you should choose B.

Answer]: B normal nano rot plasma pH leakage is maintained, and the most important buffer pair that plays a regulatory role is NaHCO3 H2CO3.

Answer]: B This question examines the blood buffer system of Pinchongpai, and the NAHCO<>H <> in the plasma

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The system is the most important for maintaining the body's acid-base balance, and the ratio of the two is the basic composition of the PH calculation formula Hen-Derson-Hasselbalch equation.

The plasma pH of a normal human body can remain relatively stable because the blood contains a buffer substance, which is composed of a weak acid and a strong alkali salt that corresponds to the wheel, such as H2

co3nahco3

Therefore, I chose: Hall D.

Our blood is slightly alkaline under normal circumstances, and because the body has the ability to automatically regulate acid and alkalinity, even in special circumstances, there will be no major changes, probably because the blood deficiency contains more substances that play a buffering role in pH, and the buffer substances are composed of a weak acid and a corresponding strong alkali salt

Therefore, c

The pH of plasma in a normal human body can remain relatively stable because the blood contains a buffer substance, which is made up of a weak acid.

and a corresponding strong alkali salt composition, such as H2

co3nahco3

Therefore, the judgment is selected: d