Crash Course Blood Part #2

What is the primary function of erythrocytes?

• Fighting infections

• Clotting blood

• Transporting oxygen and carbon dioxide

• Producing hormones

Which of the following is a characteristic of mature erythrocytes?

• They contain a large nucleus.

• They are spherical in shape.

• They lack a nucleus and most organelles.

• They are primarily involved in immune response.

What is the average lifespan of an erythrocyte?

• 30 days

• 60 days

• 120 days

• 365 days

What component of hemoglobin is responsible for binding oxygen and giving blood its red color?

• Globin

• Plasma

• Iron atom within the heme molecule

• Ribosomes

Which stage of red blood cell development is characterized by the presence of a reticulum (a group of ribosomes)?

• Erythroblast

• Reticulocyte

• Erythrocyte

• Myeloid stem cell

Approximately how many days does it take for a red blood cell to develop from its initial stage to a reticulocyte?

• 5 days

• 10 days

• 15 days

• 20 days

What is the name of the hormone that regulates the production of red blood cells?

• Insulin

• Erythropoietin

• Thyroxine

• Adrenaline

What is the effect of low blood oxygen levels on Hypoxia-Inducible Factor (HIF) in kidney cells?

• HIF production is increased.

• HIF is broken down more rapidly.

• HIF is not broken down, leading to increased EPO release.

• HIF is converted into erythropoietin.