A&P II Ch 17 (Blood)

25 July 2022
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question
Which of the following scenarios could result in HDN (hemolytic disease of the newborn)? A+ female pregnant with a B- baby. B- female pregnant with an AB+ baby. O+ female pregnant with a B+ baby. AB- female pregnant with an AB- baby.
answer
B- female pregnant with an AB+ baby.
question
Choose the statement that is true concerning hemoglobin. It is composed of four protein chains and four heme groups. It can bind a maximum of three oxygen molecules. It is found in the plasma portion of blood. When hemoglobin is not bound to oxygen, it appears blue.
answer
It is composed of four protein chains and four heme groups.
question
Hemorrhagic anemias result from blood loss.
answer
False
question
Which of the following does not stimulate erythrocyte production? A drop in normal blood oxygen levels Hyperventilating Erythropoietin Testosterone
answer
Hyperventilating
question
What triggers erythropoietin (EPO) production to make new red blood cells?
answer
reduced availability of oxygen
question
What is the average normal pH range of blood?
answer
7.35-7.45
question
The normal RBC "graveyard" is the liver.
answer
False
question
How many oxygen molecules can be transported by one hemoglobin molecule?
answer
Four
question
All lymphocytes are also leukocytes.
answer
True
question
What is a hematocrit?
answer
Percentage of erythrocytes in a whole blood sample.
question
What is the name of the protein found in erythrocytes that transports respiratory gases?
answer
Hemoglobin
question
Which of the following is true of the structure of an erythrocyte? Erythrocytes are larger than other cells in the blood. Erythrocytes can bend and twist to fit through vessels. Erythrocytes are nucleated cells. Erythrocytes are cell fragments.
answer
Erythrocytes can bend and twist to fit through vessels
question
Which of the following might trigger erythropoiesis? decreased tissue demand for oxygen moving to a lower altitude hypoxia of EPO-producing cells an increased number of RBCs
answer
Hypoxia of EPO-producing cells
question
What factor stimulates platelet formation?
answer
Thrombopoietin
question
No visible cytoplasmic granules are present in ________.
answer
Monocytes
question
What "clot buster" enzyme removes unneeded clots after healing has occurred during fibrinolysis?
answer
Plasmin
question
Which of these represents the majority of whole blood by volume? leukocytes plasma erythrocytes platelets
answer
Plasma
question
Granulocytes called neutrophils are phagocytic and are the most numerous of all white blood cell types.
answer
True
question
What part of the body does erythropoietin (EPO) target to increase erythropoiesis?
answer
Bone marrow
question
All of the following can be expected with polycythemia except ________. low blood viscosity increased blood volume high blood pressure high hematocrit
answer
Low blood viscosity
question
Choose the incompatible transfusion: Donate type O blood to a recipient with type AB blood. Donate type B blood to a recipient with type AB blood. Donate type A blood to a recipient with type AB blood. Donate type B blood to a recipient with type O blood.
answer
Donate type B blood to a recipient with type O blood.
question
Abnormally low levels of erythrocytes caused by excessive bleeding is called______.
answer
Hemorrhagic anemia
question
Fetal hemoglobin has a higher affinity for oxygen than does adult hemoglobin.
answer
True
question
Which of the following is correctly matched? hemolytic anemia: results from inadequate iron intake hemorrhagic anemia: red blood cells rupture aplastic anemia: results from excessive blood loss pernicious anemia: results from a vitamin B12 deficiency
answer
Pernicious anemia: results from a vitamin B12 deficiency
question
What erythrocyte production disorder results from an autoimmune disease associated with vitamin B12 absorption?
answer
Pernicious anemia
question
Which type of leukocyte is responsible for antibody production?
answer
Lymphocytes
question
All lymphocytes are leukocytes, but not all leukocytes are lymphocytes.
answer
True
question
What part of the hemoglobin molecule is eventually metabolized to stercobilin in the feces?
answer
A portion of the heme group
question
Which plasma constituent is the main contributor to clotting?
answer
Fibrinogen
question
When a person has an acute bacterial infection, such as bacterial meningitis or appendicitis, which type of leukocyte increases in number?
answer
Neutrophils
question
Which formed element can be described as membrane-enclosed cytoplasmic fragments?
answer
Platelets
question
What protein involved in coagulation provides the activation for the final step in clotting?
answer
Thrombin
question
Hemostasis is important for __________.
answer
Stoppage of bleeding
question
Leukopenia is an abnormally low number of leukocytes.
answer
True
question
In a centrifuged sample of blood, what should NOT be in the plasma portion of the sample?
answer
Platelets
question
Mature erythrocytes lack a nucleus.
answer
True
question
Cancerous condition involving white blood cells.
answer
Leukemia
question
Condition in which blood has abnormally low oxygen-carrying capacity.
answer
Anemia
question
Free-floating thrombus in the bloodstream.
answer
Embolus
question
Platelet deficiency resulting in spontaneous bleeding from small blood vessels.
answer
Thrombocytopenia
question
Abnormal excess of erythrocytes resulting in an increase in blood viscosity
answer
Polycythemia