Cardiovascular System 3.4 - Blood
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Questions and Answers

Where are erythrocytes produced in the body?

  • In the bone marrow (correct)
  • In the liver
  • In the kidneys
  • In the spleen

    • What is the primary function of erythrocytes in the body?

  • To regulate body temperature
  • To carry oxygen to the tissues (correct)
  • To remove waste products from the tissues
  • To carry nutrients to the tissues

    • What is the average lifespan of erythrocytes in the body?

  • 60 days
  • 120 days
  • 180 days
  • 110 days (correct)

    • What is the process by which erythrocytes are broken down in the body?

    <p>Haemolysis (C)</p> Signup and view all the answers

    Where do erythrocytes typically reside in the body unless a blood vessel is damaged?

    <p>In the cardiovascular system (B)</p> Signup and view all the answers

    Erythrocytes are primarily produced in the liver.

    <p>False (B)</p> Signup and view all the answers

    The spleen is responsible for producing erythropoietin, a hormone that stimulates erythrocyte production.

    <p>False (B)</p> Signup and view all the answers

    The average lifespan of an erythrocyte is approximately 30 days.

    <p>False (B)</p> Signup and view all the answers

    Erythrocytes can leave the cardiovascular system if they are in dire need of oxygen.

    <p>False (B)</p> Signup and view all the answers

    Haemoglobin plays a crucial role in carrying oxygen to the tissues.

    <p>True (A)</p> Signup and view all the answers

    Match the following sites with their functions in the erythrocyte lifecycle:

    <p>Bone marrow = Production of erythrocytes Spleen = Breakdown of erythrocytes Liver = Breakdown of erythrocytes Kidneys = Production of erythropoietin</p> Signup and view all the answers

    Match the following factors with their roles in the erythrocyte lifecycle:

    <p>Erythropoietin = Stimulates erythrocyte production Haemoglobin = Carries oxygen to the tissues Haemolysis = Breakdown of erythrocytes Oxygen = Stimulates erythrocyte production</p> Signup and view all the answers

    Match the following components with their primary locations in a healthy individual:

    <p>Erythrocytes = Cardiovascular system Erythropoietin = Kidneys Haemoglobin = Liver Haemolysis = Spleen and liver</p> Signup and view all the answers

    Match the following descriptions with their corresponding components in the erythrocyte lifecycle:

    <p>Hormone that stimulates erythrocyte production = Erythropoietin Protein that carries oxygen to the tissues = Haemoglobin Process by which erythrocytes are broken down = Haemolysis Organ where erythrocytes are produced = Liver</p> Signup and view all the answers

    Match the following characteristics with their corresponding descriptions in the erythrocyte lifecycle:

    <p>Average lifespan = 110 days Primary function = Carry oxygen to the tissues Site of production = Bone marrow Location in a healthy individual = Spleen and liver</p> Signup and view all the answers

    What is the function of the iron atom in haemoglobin molecules?

    <p>To carry oxygen molecules (A)</p> Signup and view all the answers

    Why are erythrocytes packed full of haemoglobin molecules?

    <p>To allow them to carry more oxygen (D)</p> Signup and view all the answers

    What is oxyhaemoglobin?

    <p>Oxygenated haemoglobin (D)</p> Signup and view all the answers

    Why do people feel tired when they are iron deficient?

    <p>Because iron is necessary for haemoglobin to carry oxygen (B)</p> Signup and view all the answers

    How many oxygen molecules can each haemoglobin molecule bind?

    <p>Four (A)</p> Signup and view all the answers

    What is the function of the iron atom in haemoglobin molecules?

    <p>To give haemoglobin its red color (C)</p> Signup and view all the answers

    Why are erythrocytes packed full of haemoglobin molecules?

    <p>To make them more efficient at carrying oxygen (D)</p> Signup and view all the answers

    What is the result of each molecule of haemoglobin being able to bind four oxygen molecules?

    <p>Erythrocytes can carry more oxygen (A)</p> Signup and view all the answers

    What is deoxyhaemoglobin?

    <p>Deoxygenated haemoglobin (D)</p> Signup and view all the answers

    What is the significance of oxyhaemoglobin?

    <p>It is the state of haemoglobin when it has bound to oxygen (A)</p> Signup and view all the answers

    Match the following haemoglobin components with their descriptions:

    <p>Protein molecules = Make up the haemoglobin molecule Iron (Fe) atom = Attaches to the protein molecules Oxygen molecules = Carried by the haemoglobin molecule Haemoglobin molecule = Made up of 4 protein molecules</p> Signup and view all the answers

    Match the following haemoglobin states with their colours:

    <p>Oxyhaemoglobin = Red Deoxyhaemoglobin = Purplish-blue Haemoglobin = No distinct colour Erythrocytes = Reddish-yellow</p> Signup and view all the answers

    Match the following erythrocyte characteristics with their benefits:

    <p>Packed with haemoglobin molecules = Can carry more oxygen Contain iron = Essential for oxygen binding Produced in the liver = Incorrect - produced in the bone marrow Can leave the cardiovascular system = Incorrect - does not occur under normal conditions</p> Signup and view all the answers

    Match the following erythrocyte-related terms with their definitions:

    <p>Oxyhaemoglobin = Oxygenated haemoglobin Deoxyhaemoglobin = Deoxygenated haemoglobin Haemoglobin = Protein molecule in erythrocytes Erythrocyte = Red blood cell</p> Signup and view all the answers

    Match the following components with their roles in oxygen transport:

    <p>Haemoglobin molecule = Binds oxygen molecules Iron (Fe) atom = Allows oxygen binding Erythrocytes = Transports oxygen in the blood Oxygen molecules = Carried by haemoglobin</p> Signup and view all the answers

    Each molecule of haemoglobin is made up of 4 ______ molecules that have an iron atom attached to it

    <p>protein</p> Signup and view all the answers

    Haemoglobin is ______ contained in erythrocytes and is responsible for carrying oxygen

    <p>protein</p> Signup and view all the answers

    Erythrocytes are packed full of ______ molecules

    <p>haemoglobin</p> Signup and view all the answers

    ______haemoglobin = oxygenated haemoglobin - red

    <p>oxy</p> Signup and view all the answers

    ______haemoglobin = deoxygenated haemoglobin – purplish-blue

    <p>deoxy</p> Signup and view all the answers

    What is the main way that carbon dioxide is transported in the body?

    <p>Dissolved and transported in the serum (C)</p> Signup and view all the answers

    What is the primary method by which the body removes carbon dioxide?

    <p>Through the exhalation of breath (A)</p> Signup and view all the answers

    Why is carbon dioxide transported differently than oxygen?

    <p>Because CO2 is less soluble in water (D)</p> Signup and view all the answers

    What is the purpose of removing carbon dioxide from the body?

    <p>To remove a waste product of tissue metabolism (A)</p> Signup and view all the answers

    How does the body transport carbon dioxide from the cells to the lungs?

    <p>Through the bloodstream (D)</p> Signup and view all the answers

    What is the primary method by which the body removes carbon dioxide?

    <p>By exhaling it through the lungs (A)</p> Signup and view all the answers

    How is carbon dioxide mostly transported in the body?

    <p>Dissolved in the serum (B)</p> Signup and view all the answers

    What is the role of the serum in transporting carbon dioxide?

    <p>To dissolve and transport carbon dioxide (A)</p> Signup and view all the answers

    Why is it necessary to remove carbon dioxide from the body?

    <p>To remove a waste product (A)</p> Signup and view all the answers

    Where is carbon dioxide transported from in the body?

    <p>From the cells to the lungs (D)</p> Signup and view all the answers

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