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How is CO2 from the tissues converted into HCO3 in the blood?

Anonymous

∙ 14y ago

Updated: 6/16/2024

CO2 combines with H2O in blood plasma to form H2CO3 (carbonic acid). Carbonic acid readily dissociates into HCO3 + H+ .

The reaction between CO2 and water happens inside red blood cells, and the reaction is catalyzed by the enzyme carbonic anhydrase.

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CO2 from the tissues diffuses into red blood cells, where it combines with water to form carbonic acid (H2CO3) with the help of an enzyme called carbonic anhydrase. Carbonic acid then dissociates into bicarbonate ions (HCO3-) and hydrogen ions (H+). The bicarbonate ions are then transported out of the red blood cells and into the plasma to help buffer the blood pH.

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How is most CO2 moved in the body?

Most carbon dioxide (CO2) is transported in the blood in the form of bicarbonate ions (HCO3-). It is produced as a byproduct of cellular metabolism and diffuses into the blood from tissues. In the lungs, CO2 is exhaled through the process of respiration.

Most of the carbon dioxide in the blood is transported asMost of the carbon dioxide in the bood is transported as?

Blood transports CO2 from tissue cells to the lungs in 3 forms:1) Dissolved in blood plasma (7 -- 10%)2) Chemically bound to Hb (around 20%), it forms a compound named carbaminohemoglobin. This reaction occurs rapidly and does not require an enzyme. CO2 binds directly to the amino acids of the Hb protein molecule.3) As bicarbonate ion (HCO3-) in plasma (about 70%): CO2 permeates (by simple diffusion) into the RBCs and combines with water. This reaction requires the presence of an enzyme called carbonic anhydrase. The result is carbonic acid (H2CO3), an unstable compound that quickly dissociates into H+ and HCO3-:CO2 + H2O + enzyme -------- H2CO3 -------- H+ + HCO3-The H+ formed, as well as CO2 itself, bind to hemoglobin molecules, triggering the called (Bohr effect). Thus, oxygen release is enhanced by CO2 loading. Because of the buffering effect of Hb, the liberated H+ causes little change in blood pH: arterial blood pH= 7.40; venous blood pH= 7.34.(Ahmed Urbizo, MDC STUDENT)

What Contain hemoglobin and transports oxygen to the body tissues and removes CO2 from the body tissues?

Red blood cells contain hemoglobin, which transports oxygen from the lungs to the body tissues and removes carbon dioxide from the body tissues. Hemoglobin binds to oxygen in the lungs and releases it in other tissues, while also picking up carbon dioxide to be exhaled from the body.

How do the blood carbon dioxide levels and blood hydrogen ion and bicarbonate ion levels change while a child is holding her breath?

While holding her breath, blood carbon dioxide levels increase as CO2 accumulates in the blood. This leads to a decrease in blood pH due to an increase in hydrogen ions (acidosis). Bicarbonate ions act as a buffer to temporarily maintain pH but will eventually decrease as they bind to hydrogen ions to form carbonic acid and help regulate pH.

Does carbon dioxide enter from the blood stream?

Yes, carbon dioxide enters the blood stream in the body's tissues, where it is produced as a byproduct of metabolism. It is then carried in the blood back to the lungs, where it is exhaled from the body.

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Related Questions

What is the role of bicarbonate in gas transport?

Bicarbonate ion (HCO3-) plays a crucial role in gas transport as the majority of carbon dioxide (CO2) produced in tissues is converted to bicarbonate for transportation in the blood. This conversion occurs in red blood cells through the action of the enzyme carbonic anhydrase. Bicarbonate is transported in the plasma to the lungs where it is converted back to CO2 for exhalation.

Place where blood changes from low CO2 to high CO2?

The blood changes from low CO2 to high CO2 in the tissues where oxygen is delivered and CO2 is produced as a byproduct of cellular metabolism.

What gas diffuses from the tissues to the blood?

Both oxygen and carbon dioxide diffuse from body tissues into the blood.

What is the formula that represents the behavior of CO2 in the blood?

The behavior of CO2 in the blood is represented by the Henderson-Hasselbalch equation, which relates the pH of a solution to the concentration of bicarbonate and dissolved carbon dioxide. The equation is: pH = 6.1 + log([HCO3-] / 0.03 × PCO2), where [HCO3-] is the bicarbonate concentration and PCO2 is the partial pressure of carbon dioxide.

What is the chemical reaction to CO2 plus H2O-- HCO3?

The reaction of CO2 with water to form bicarbonate (HCO3-) is a reversible reaction that occurs in the presence of carbonic anhydrase enzyme. The chemical equation for this reaction is: CO2 + H2O ↔ H2CO3 ↔ H+ + HCO3-.

Why does CO2 make tissues acidic what is the chemical reaction involved?

When CO2 dissolves in water, it forms carbonic acid (H2CO3) through the reaction CO2 + H2O -> H2CO3. This carbonic acid then dissociates into bicarbonate (HCO3-) and hydrogen ions (H+), leading to an increase in acidity (lower pH) in tissues. This acidity can disrupt normal cellular functions and enzyme activities.

Why is the hematocrit value of venous blood slightly more than that of arterial blood?

It might be due to Hamburger's effect( chloride shift). In venous blood, RBC will take up CO2 and CO2 react with water to form carbonic acid ( H2CO3). This acid will then dissociate to form hydrogen ion ( H+) and bicarbonate ion (HCO3-). HCO3- will flow out from RBC and each efflux of HCO3- will be accompanied by influx of Cl-. In some circumstances, some HCO3- and Cl- remain in RBC or maybe the rat eof exchange of HCO3- and Cl- is not the same, and this create water flow into RBC, thus volume of RBC will increase (RBC swells) and hence it's hematocrit value too.

What do blood tissues carry?

Hormones,O2,CO2,Digestive products,excretory products

What gas is necessary for respiration?

The gases necessary (yes there are more than one) for respiration are oxygen and carbon dioxide. Oxygen plays the simpler role of the two. It is required by all cells of the body and can be passed along to the tissues via hemoglobin in red blood cells. Carbon Dioxide actually plays a very important role. It is the metabolic waste produced by cells, and it can be converted into bicarbonate ions by rbc to be transported in the blood, or bound to the globulin of hemoglobin and transported in this way. Its important role is its levels control respiration via peripheral and central chemoreceptors. To high CO2 levels and hyperventilation will reduce it or CO2 + H2O will be converted to bicarbonate ion (HCO3) and H ion. When CO2 is too low - hypoventilation will raise CO2 levels or the conversion of bicarbonate + H back to CO2 and water. It also plays and integral role in maintaining blood pH.

What kind of chemical is in your red blood cells that can pick up oxygen and carbon dioxide?

The chemical in red blood cells that binds to oxygen is called hemoglobin. Hemoglobin contains iron, which is essential for transporting oxygen from the lungs to the body tissues and carrying carbon dioxide back to the lungs for exhalation.

How is most CO2 moved in the body?

Most carbon dioxide (CO2) is transported in the blood in the form of bicarbonate ions (HCO3-). It is produced as a byproduct of cellular metabolism and diffuses into the blood from tissues. In the lungs, CO2 is exhaled through the process of respiration.

Does baking soda raise your PH in your body?

Baking soda does raise your blood pressure. Since Baking soda raises blood pressure and if your blood pressure is high then there will be a higher diffusion of Nutrients, O2, Proteins at the arterial end of the capillary into the Interstitial Fluid due to a higher pressure gradient and thus at the venous end of the capillary a low concentration of CO2 (produced by the cells) will diffuse from the interstitial fluid into the venous end of the capillary. So overall the dissolved CO2 in the blood will be low. So how does CO2 relate to pH? we know that CO2 combines with H2O to form Carbonic Acid; Carbonic Acid in turn disassociates to form H+ and HCO3- CO2 + H20 --> H2CO3 --> H+ + HCO3- Since the CO2 level in the blood is low there will be Less H+ in the blood and therefore the pH of the blood will be high, Causing Alkalosis.

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