Deck 11 (MR): Blood

Question 1

Which of the following statements are true of red blood cells (Select all that apply)?

A)The protein hemoglobin contains the mineral iron.
B)The mineral iron enables RBCs to carry oxygen.
C)RBCs pick up oxygen in pulmonary capillaries.
D)The shape of an RBC is best described as a deflated soccer ball.
E)Hemoglobin that has given up its oxygen is called debonded hemoglobin.
F)The life span of an RBC is about 60 days.

Answer 1

A,B,C

Question 2

Which of the following statements are true of blood plasma (Select all that apply)?

A)Blood plasma is approximately 60% water.
B)Plasma is a solvent for some nutrients and waste products.
C)The plasma protein albumin is important for blood clotting.
D)Plasma is able to distribute body heat because it has a low heat capacity.
E)Plasma contains buffer systems that help regulate blood ph.
F)The alpha- and beta-globulins are carbohydrate carrier molecules in the plasma.

Answer 2

B,E

Question 3

Which of the following statements are true of hemostasis (Select all that apply)?

A)Platelets will stick to any rough surface.
B)The greater the damage,the faster chemical clotting will begin.
C)Platelet plugs are not useful in capillaries.
D)Vascular spasm is not possible in capillaries because they do not have endothelium.
E)Vascular spasm constricts a damaged artery and makes the break smaller.
F)When a large vessel ruptures,vascular spasm must occur before chemical clotting can be useful.

Answer 3

A,B,E,F

Question 4

Which of the following statements are true of blood viscosity and pH (Select all that apply)?

A)Plasma proteins decrease blood viscosity,so that blood flows smoothly.
B)The normal pH range of blood is 7.35 to 7.45.
C)Blood viscosity contributes to normal blood pressure.
D)Oxygen has a greater effect on blood pH than does carbon dioxide.

Question 5

Which of the following statements are true of CBC values (Select all that apply)?

A)An RBC count of 4.0 million/µL is in the normal range.
B)A WBC count of 9500/µL is considered high normal.
C)A platelet count of 100,000/µL is considered low normal.
D)A hematocrit of 40% is within the normal range.
E)A hemoglobin level of 17 grams/100 mL is considered high normal.
F)An RBC count of 6.0 million/µL is considered high normal.

Question 6

Which of the following statements are true of the life cycle of RBCs (Select all that apply)?

A)All RBCs are produced in the RBM and the liver.
B)Vitamin B12 and folic acid are necessary for DNA synthesis in mature RBCs.
C)Iron and protein in the diet are necessary to become part of hemoglobin.
D)The intrinsic factor,produced by the liver,prevents digestion of vitamin B12.
E)The only part of old RBCs that can be recycled is the iron.
F)Old RBCs are phagocytized by lymphocytes in the liver,spleen,and RBM.
G)Bilirubin is a waste product of the heme of old hemoglobin.
H)Bilirubin is normally eliminated by the kidneys.

Question 7

Which of the following statements are true of white blood cells (WBCs)(Select all that apply)?

A)The most numerous WBCs are the lymphocytes.
B)Monocytes become macrophages that are capable of phagocytosis.
C)Eosinophils increase during allergic reactions.
D)Basophils contribute to the process of inflammation.
E)The most numerous phagocytes are the neutrophils.
F)B lymphocytes phagocytize small pathogens.
G)T lymphocytes become plasma cells that produce antibodies.
H)The relative percentages of the various kinds of WBCs is called a comparative count.

Question 8

Which of the following statements are true of blood disorders (Select all that apply)?

A)Thrombocytopenia is a deficiency of platelets,and may lead to bleeding episodes.
B)Leukemia is an excess of WBCs,but the WBCs are not functional.
C)Anemia is a deficiency of RBCs or of hemoglobin.
D)A deficiency of WBCs is leukocytosis.

Question 9

Which of the following statements are true of hemopoietic tissues (Select all that apply)?

A)The primary hemopoietic tissue is red bone marrow (RBM).
B)RBM is found in flat and irregular bones.
C)Some lymphocytes are produced in lymphatic tissue.
D)RBM produces all of the blood cells except the monocytes.
E)Platelets are fragments of larger RBM cells called reticulocytes.
F)A stem cell in the RBM is unspecialized,and may become one of several kinds of cells.

Question 10

Which of the following statements are true of chemical blood clotting (Select all that apply)?

A)Many of the clotting factors are produced by the liver,but some are produced by the spleen.
B)Fibrinogen is changed to fibrin in stage 1 of clotting.
C)Calcium ions are needed for all three stages of clotting.
D)Prothrombin activator changes thrombin to prothrombin.
E)The actual clot is made of fibrin.
F)The purpose of clot retraction is to create a smaller area to be repaired.
G)The purpose of fibrinolysis is to strengthen a newly formed clot.
H)The endothelium of blood vessels is smooth and helps prevent abnormal clotting.

Question 11

Which of the following statements are true of red blood cell types (Select all that apply)?

A)Rh-negative RBCs do not have the D antigen.
B)The ABO blood group has three specific types.
C)A type O person has both A and B antibodies on the RBCs.
D)A type B person cannot donate blood to a type O person.
E)A type A negative person can donate blood to a type B positive person.
F)The most common blood type in a population is often O positive,because the genes for it are dominant.