Red Blood Cells (Erythrocytes) Function

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What is the major function of red blood cells?

Transporting hemoglobin to carry oxygen

What happens when hemoglobin is free in the plasma of human beings?

About 3% of it leaks through capillary membranes into tissue spaces or glomerular filtrate

Besides transporting hemoglobin, what other function do red blood cells perform?

Contain a large quantity of carbonic anhydrase for CO2 transport

What makes it possible for the blood to transport enormous quantities of CO2 from the tissues to the lungs?

<p>Rapid reversible reaction catalyzed by carbonic anhydrase</p> Signup and view all the answers

What is responsible for most of the acid-base buffering power of whole blood?

<p>Hemoglobin in red blood cells</p> Signup and view all the answers

What is the enzyme present in red blood cells that catalyzes the reversible reaction between carbon dioxide and water?

<p>Carbonic anhydrase</p> Signup and view all the answers

In which form is carbon dioxide transported from the tissues to the lungs in the blood?

<p>As bicarbonate ion</p> Signup and view all the answers

What happens to hemoglobin when it is free in the plasma of human beings?

<p>It leaks through capillary membranes into tissue spaces</p> Signup and view all the answers

What percentage of hemoglobin leaks through the capillary membrane into tissue spaces when it is free in the plasma of human beings?

<p>3%</p> Signup and view all the answers

In which animals does hemoglobin circulate as free protein in the plasma, not enclosed in red blood cells?

<p>Lower animals</p> Signup and view all the answers

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