20 Review

• A is basophil

  B is lymphocyte

  C is neutrophil

  D is eosinophil

  E is monocyte

  
• Functions of the blood include

  all of the above (transport of nutrients/wastes, regulation of pH and electrolyte concentrations, restricting fluid loss)
• The most common formed elements in the blood are the

  red blood cells
• The most abundant proteins in blood are

  albumins
• The major classes of white blood cells include

  granular and agranular cells
• Stem cells responsible for the production of white blood cells originate in the

  red bone marrow
• Which of the following statements concerning red blood cells (RBCs) is not true?

  RBCs have a large nucleus
• The primary function of hemoglobin is to

  carry oxygen to peripheral tissues
• People with type A blood have

  A surface antigens on their red blood cells
• The white blood cells that increase in number during an allergic reaction to in response to a parasitic infections are the

  eosinophils
• Platelets are

  fragments of cells
• How does the reaction of an Rh+ or Rh- blood type differ from that of types A, B, and O?

  The blood of an Rh- individual contains anti-Rh surface antigens only if he or she has been sensitized by previous exposure to Rh+ erythrocytes
• Why does the lack of mitochondria make an erythrocyte more efficient at transporting oxygen?

  Without mitochondria, the erythrocyte will not use the oxygen it absorbs and can therefore carry all of it to peripheral tissues
• Iron deficiency results in which of the following?

  Anemia
• What is the volume of packed red cells, and why is it sometimes called "packed cell volume"?

  The volume of packed cells is a hematocrit. It is expressed as a percentage and closely approximates the volume of erythrocytes in the blood sample. As a result, the hematocrit value is often called the volume of packed red cells or simple the packed cell volume
• What is the function of the clotting reaction?

  The clotting reaction seals the breaks in blood vessel walls, preventing changes in blood volume that could seriously affect blood pressure and cardiovascular functions
• What is the fate of megakaryocytes?

  A mature megakaryocyte begins to shed its cytoplasm in small membrane enclosed packets called platelets
• What are lipoproteins, and what is their function in the blood?

  Lipoproteins are protein lipid molecules that readily dissolve in plasma. Some lipoproteins transport insoluble lipids to peripheral tissues
• Can a person with type O blood receive type AB blood? Why or why not?

  People with type O blood have anti-A and anti-B antibodies in their plasma. Thus, they could not receive blood from an AB donor because the RBCs in this blood type contain surface antigens A and B on their surface. A cross reaction would occur