Ch. 19 Cardiovascular System

Question 1

*** Which of these is a function of blood?

1. clot formation
2. protection against foreign substances
3. maintenance of body temperature
4. regulation of pH and osmosis
5. all of these are correct

Answer 1

5. all of these are correct
6. clot formation
7. protection against foreign substances
8. maintenance of body temperature
9. regulation of pH and osmosis

Question 2

Which of these is NOT a component of plasma?

1. nitrogen
2. sodium ions
3. platelets
4. water
5. urea

Answer 2

3. platelets

Question 3

Which of these plasma proteins plays an important role in maintaining the osmotic concentration of the blood?

1. albumin
2. fibrinogen
   3, platelets
3. hemoglobin
4. globulins

Answer 3

1. albumin

Question 4

Red blood cells

1. are the least numerous formed element in blood
2. are phagocytic cells
3. are produced in the yellow marrow
4. do not have a nucleus
5. all of these are correct

Answer 4

4. do not have a nucleus

Question 5

Given these ways of transporting carbon dioxide in the blood, choose the arrangement that lists them in the correct order from largest to smallest percentage of carbon dioxide transported.

1. bicardonate ions
2. combined with blood proteins
3. dissolved in plasma

Answer 5

1. bicardonate ions
2. combined with blood proteins
3. dissolved in plasma

Question 6

Each hemoglobin molecule can become associated with ______ O2 molecules.

1
2
3
4
an unlimited number

Answer 6

4

Question 7

*** Erythropoietin

1. is produced mainly by the heart
2. inhibits the production of red blood cells
3. production increases when blood O2 decreases
4. production is inhibited by testosterone
5. all of these are correct

Answer 7

3. production increases when blood O2 decreases

Question 8

Which of the these changes occur(s) in the blood in response to the initiation of a vigorous exercise program?

1. increased erythropoietin production
2. increased concentration of reticulocytes
3. decreased bilirubin formation
4. both 1 and 2
5. all of these are correct

Answer 8

4. both 1 and 2
5. increased erythropoietin production
6. increased concentration of reticulocytes

Question 9

Which of the components of hemoglobin is correctly matched with its fact following the destruction of a red blood cell?

1. heme-reused to form a new hemoglobin molecule
2. globin - broken down into amino acids
3. iron-mostly secreted in bile
4. all of these are correct

Answer 9

2. globin - broken down into amino acids

Question 10

The blood cells that protect against worm parasites are

1. eosinophils
2. basophils
3. neutrophils
4. monocytes
5. lymphocytes

Answer 10

1. eosinophils

Question 11

The most numerous type of WBC, whose primary function is phagocytosis

1. eosinophils
2. basophils
3. neutrophils
4. monocytes
5. lymphocytes

Answer 11

3. neutrophils

Question 12

*** Monocytes

1. are the smallest white blood cells
2. increase in number during chronic infections
3. give rise to neutrophils
4. produce antibodies

Answer 12

2. increase in number during chronic infections

Question 13

The smallest WBC, which include B cells and T cells are

1. eosinophils
2. basophils
3. neutrophils
4. monocytes
5. lymphocytes

Answer 13

5. lymphocytes

Question 14

Platelets

1. are derived from megakaryocytes
2. are cell fragments
3. have surface molecules that attach to collagen
4. play an important role in clot formation
5. all of these are correct

Answer 14

5. all of these are correct
6. are derived from megakaryocytes
7. are cell fragments
8. have surface molecules that attach to collagen
9. play an important role in clot formation
10. all of these are correct

Question 15

*** Given these processes in platelet plug formation, choose the arrangement that lists the processes in the correct order after a blood vessel is damaged.

1. platelet adhesion
2. platelet aggregation
3. platelet release reaction

Answer 15

1, 3, 2

1. platelet adhesion
2. platelet release reaction
3. platelet aggregation

Question 16

A constituent of blood plasma that forms the network of fibers in a clot is

1. fibrinogen
2. tissue factor
3. platelets
4. thrombin
5. prothrombinase

Answer 16

1. fibrinogen

Question 17

Given these chemicals, arrange the list in the order they are used during clot formation

1. activated factor XII
2. fibrinogen
3. prothrombinase
4. thrombin

Answer 17

1, 3, 4, 2

1. activated factor XII
2. prothrombinase
3. thrombin
4. fibrinogen

Question 18

The extrinsic pathway

1. begins with the release of thromboplastin (tissue factor)
2. leads to the production of activated factor X
3. requires Ca2+
4. all of these are correct

Answer 18

all of these are correct

1. begins with the release of thromboplastin (tissue factor)
2. leads to the production of activated factor X
3. requires Ca2+

Question 19

The chemical involved in the breakdown of a clot (fibrinolysis) is

1. antithrombin
2. fibrinogen
3. plasmin
4. sodium citrate

Answer 19

3. plasmin

Question 20

A person with type A blood

1. has anti-A antibodies
2. has type B antigens
3. will have a transfusion reaction is given type B blood
4. all of these are correct

Answer 20

3. will have a transfusion reaction is given type B blood

Question 21

In the United States, the most common blood type is

1. A+
2. B+
3. O+
4. O-
5. AB -

Answer 21

3. O+