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10 Questions

3 Views

Physiology of Blood

Created by

@NourishingZebra

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Questions and Answers

What is the normal hemoglobin range for adult males?

12 to 16 g/100mL of blood

10 to 14 g/100mL of blood

15 to 20 g/100mL of blood

13.5 to 18 g/100mL of blood (correct)

Where are old red blood cells removed from circulation and destroyed?

Spleen and liver (correct)

Bone marrow

Lungs

Kidneys

What is the main component of hemoglobin that can combine reversibly with one oxygen molecule?

Amino acids of globin

Globin – 4 polypeptide chains

Iron ion (correct)

Heme group in each of 4 chains

What is the fate of non-iron heme after the breakdown of red blood cells?

Ends as yellow pigment urobilin in urine or brown Signup and view all the answers

What percentage of total carbon dioxide does hemoglobin transport?

23% Signup and view all the answers

What is the main function of the heme group in hemoglobin?

To combine reversibly with oxygen molecules Signup and view all the answers

What is the fate of non-iron heme after the breakdown of red blood cells?

It ends as yellow pigment urobilin in urine or brown Signup and view all the answers

What is the lifespan of red blood cells (erythrocytes)?

Approximately 120 days Signup and view all the answers

What is the normal hemoglobin range for adult females?

12 to 16 g/100mL of blood Signup and view all the answers

What component of hemoglobin is responsible for transporting 23% of total carbon dioxide?

Combines with amino acids of globin Signup and view all the answers

Study Notes

Functions of Blood

Transportation of waste products from cells for elimination
Transportation of hormones
Regulation of body temperature by distributing heat
Regulation of pH by carrying buffers
Regulation of fluid volume
Protection by preventing blood loss through clotting
Protection by preventing infection with WBCs and antibodies

Components of Blood

Blood plasma: a water liquid extracellular matrix consisting of 91.5% water and 8.5% solutes (primarily proteins)
Formed elements: cells and cell fragments

Formed Elements of Blood

Red blood cells (erythrocytes): contain oxygen-carrying protein hemoglobin
Production of RBCs: at least 2 million new RBCs are produced per second to replace destroyed ones
Biconcave disc shape: increases surface area
Strong, flexible plasma membrane: glycolipids in the plasma membrane are responsible for ABO and Rh blood groups
Lack of nucleus and other organelles: no mitochondria, doesn't use oxygen

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Description

Test your knowledge of the physiology of blood with this quiz. Explore the functions of blood including transportation of nutrients, waste elimination, regulation of body temperature and pH, as well as its role in protection against blood loss and infection.