29 Questions
What is the characteristic feature of agranular leukocytes?
They have many fewer granules in the cytoplasm
Which type of leukocyte is essential in the immune response?
Lymphocytes
What is the main function of granular neutrophils?
Respond rapidly to site of infection
What is the characteristic feature of leukopenia?
Too few leukocytes produced, unable to fight off disease
What is the main function of basophils?
Intensify the inflammatory response
Which characteristic distinguishes monocytes from other leukocytes?
They become macrophages as they leave circulation
What is the function of erythrocytes?
Carrying oxygen away from the lungs and returning carbon dioxide to the lungs
What is the primary site for the maturation of erythrocytes?
Red bone marrow
Which mineral facilitates the absorption and transport of iron needed for the production of hemoglobin?
Copper
What happens to old erythrocytes after they have lived for about 120 days?
They are recycled to form new erythrocytes
What is the primary component of a hemoglobin molecule?
Heme with an iron ion
What happens if the percent saturation of hemoglobin decreases?
Increased EPO (erythropoietin) production
What is the function of plasma in the blood?
Transporting nutrients and oxygen
What is the normal percentage of red blood cells (RBC) in the blood?
45%
Which of the following is a characteristic of blood plasma?
It contains 92% water and various substances
Where does the production of red blood cells (erythrocytes) primarily occur?
Red bone marrow
Which hemoietic growth factor stimulates the production of platelets?
Thrombopoietin
What is the purpose of a bone marrow biopsy?
To detect forms of anemia and cancer
What is the main characteristic of chronic leukemia?
Failure of mature leukocytes to die
What is the function of platelets in stopping blood flow following damage to a vessel?
Secrete growth factor for repair
Which pathway of coagulation is quicker and more direct, usually triggered by trauma?
Extrinsic pathway
What is the primary function of vitamin K in blood clotting?
Required by the liver for many clotting factors
Which disorder is characterized by a deficiency of a clotting factor?
Hemophilia
What occurs when RBC with foreign antigens trigger an immune response?
Clumping of RBC leading to agglutination
What is the defining characteristic of ABO blood group?
Presence of A and B antigens
Why should donors and receivers ideally match in blood transfusion?
To prevent agglutination and immune reactions
Thrombophilia is characterized by a tendency to form:
Unwanted clots in blood vessels
What is the main function of anticoagulants?
Inhibit platelet aggregation and clot formation
What happens if a thrombus breaks free and gets trapped in a blood vessel?
It becomes an embolism that can block blood flow
Test your knowledge about blood cells and disorders with this quiz. Explore topics like sickled RBCs, iron deficiency anemia, vitamin deficiencies, leukocytes, platelets, and more.
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