Blood & The Circulatory System

16 Questions | Total Attempts: 306

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Blood & The Circulatory System

Questions and Answers
  • 1. 
    The primary function of Erythrocytes is:
    • A. 

      Have a role in the immune response

    • B. 

      Production of Stem Cells

    • C. 

      Deliver oxygen to the tissues and return carbon dioxide from the tissues to the lungs

    • D. 

      Clotting factors

  • 2. 
    Which is not a type of White Blood Cell:
    • A. 

      Macrophage

    • B. 

      Monocyte

    • C. 

      Leukocyte

    • D. 

      Erythrocyte

  • 3. 
    The straw-colored fluid that forms the top layer in a sample blood tube as blood sits is called _________and forms about _______ of the blood.
    • A. 

      Plasma; 55%

    • B. 

      Plasminogen; 45%

    • C. 

      Plasma; 45%

    • D. 

      Serum; 45%

  • 4. 
    The bottom layer in a sample blood tube as blood sits is called is the ______________and forms about _______ of the blood.
    • A. 

      Red Blood Cells; 45%

    • B. 

      Erythrocytes; 55%

    • C. 

      Plasma; 55%

    • D. 

      WBC & Platelets; 55%

    • E. 

      Platelets; 55%

  • 5. 
    The middle whitish layer in a sample blood tube as blood sits is composed of _________ and _____________, and forms about 1% of the blood.
    • A. 

      White Blood Cells, Erythrocytes

    • B. 

      Leukocytes, Platelets

    • C. 

      Plasma, Platelets

    • D. 

      Erythrocytes, Platelets

  • 6. 
    All of the cells found in the blood come from bone marrow. They begin their life as stem cells, and they mature into three main types of cells: ______________________.  (Check all that apply)
    • A. 

      Plasma, Platelets and RBCs

    • B. 

      Plasma, WBCs, and RBCs

    • C. 

      RBCs, Leukocytes, and Platelets

    • D. 

      Platelets, WBCs & Erythrocytes

  • 7. 
    The circulatory system also called the cardiovascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from cells in the body to nourish it and help to fight diseases, stabilize body temperature and pH, and to maintain homeostasis.
    • A. 

      True

    • B. 

      False

  • 8. 
    The average human adult has more than 6 liters of blood in his or her body.
    • A. 

      True

    • B. 

      False

  • 9. 
    The Circulatory system includes the heart, liver, arteries, arterioles, capillaries, venules, and veins
    • A. 

      True

    • B. 

      False

  • 10. 
    What is the innermost layer of cells in a blood vessel?
    • A. 

      Media

    • B. 

      Intima

    • C. 

      Endothelium

    • D. 

      Endometrium

  • 11. 
    When a macrophage leaves the bloodstream and migrates out into the body tissues, it becomes a monocyte
    • A. 

      True

    • B. 

      False

  • 12. 
    A clot that remains fixed to its point of origin is called _____________; if it breaks free and moves downstream it is called ______________.
    • A. 

      An Activated Platelet; a Thrombus

    • B. 

      A Hemorrhage; An Aneurysm

    • C. 

      An Aneurysm; A Thrombus

    • D. 

      None of the above

  • 13. 
    The problem with a clot is that it can restrict blood flow, and almost certainly will if it dislodges and flows downstream into smaller and smaller vessels. This frequently results in deprivation of oxygen once it lodges.
    • A. 

      True

    • B. 

      False

  • 14. 
    In a CBC, the test for Hemoglobin measures the amount of the oxygen-carrying protein in the blood.
    • A. 

      True

    • B. 

      False

  • 15. 
    In a CBC, the Hematocrit test measures the percentage of a person's blood that consists of red blood cells and erythrocytes.
    • A. 

      True

    • B. 

      False

  • 16. 
    The Carotid arteries are the vessels of the heart that are particularly susceptible to atherosclerosis
    • A. 

      True

    • B. 

      False

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