17 quiz

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Human Anatomy & PhysiologySEVENTH EDITION

Elaine N. MariebKatja Hoehn

Active Lecture Questions prepared by Cinnamon VanPutte, Southwestern Illinois College

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17Blood

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Which of the following comprise a logical sequence of vessels as blood exits the heart?

a. capillaries; arteries; veins

b. veins; capillaries; arteries

c. arteries; capillaries; veins

d. arteries; veins; capillaries

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Of the listed blood components, which comprises the immune function?

a. plasma

b. buffy coat

c. erythrocytes

d. hematocrit

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

The major function of the most common plasma protein, albumin, is __________.

a. maintenance of plasma osmotic pressure

b. buffering changes in plasma pH

c. fighting foreign invaders

d. both a and b

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Red blood cells are efficient oxygen transport cells. Of the following characteristics, which is the major contributor to the large oxygen-carrying capacity of a red blood cell?

a. red blood cells lack mitochondria

b. red blood cells don’t divide

c. red blood cells are biconcave discs

d. red blood cells contain hemoglobin

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Each hemoglobin, the oxygen transport protein, can transport ________ oxygen atoms.

a. 4

b. 40

c. 400

d. 4000

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Oxygen binds to the _______ portion of hemoglobin.

a. globin

b. oxyhemoglobin

c. iron atom

d. amino acid

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Iron levels in a patient’s blood are lowered. This patient would experience which of the following symptoms?

a. an elevated red blood cell count

b. an increase in energy level

c. an increase in fatigue level

d. a decreased white blood cell count

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

A hematopoietic stem cell will give rise to __________.

a. erythrocytes

b. leukocytes

c. platelets

d. all of the above

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Predict the outcome of an overdose of the hormone, erythropoietin.

a. the blood viscosity increases to levels that may induce heart attacks or strokes

b. oxygen-carrying capacity remains unchanged despite elevated red blood cell counts

c. red blood cell counts remain unchanged, but the number of reticulocytes increase

d. blood viscosity levels decrease while oxygen-carrying capacity increases

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

What response would you expect after traveling to a high altitude area for a period of two weeks?

a. blood levels of oxygen would remain depressed for the duration

b. a surge in iron release from the liver would occur

c. the kidney would secrete elevated amounts of erythropoietin

d. there would be no change in blood composition

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Pernicious anemia is the inability of the body to absorb vitamin B12. Predict the symptom

a. the patient would have reduced blood iron levels

b. the patient’s red blood cells would be incapable of dividing

c. the patient would have low levels of hemoglobin

d. the patient would not experience an effect on red blood cells

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Which of the following statements is TRUE regarding the mechanism controlling movement of white blood cells into damaged areas?

a. white blood cells exit the capillary and move through the tissue spaces with cytoplasmic extensions by following a trail of chemicals produced by other white blood cells

b. blood capillaries break open, flooding the damaged area with white blood cells

c. the damaged cells synthesize their own white blood cells

d. none of the statements are true

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

An elevated neutrophil count would be indicative of ________.

a. a viral infection

b. a common cold

c. an acute bacterial infection

d. a parasitic infection

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Antihistamines counter the actions of which white blood cells?

a. neutrophil

b. lymphocyte

c. basophil

d. eosinophil

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Leukemia is a general descriptor for what type of disorder?

a. an abnormally low white blood count

b. overproduction of abnormal leukocytes

c. elevated counts of normal neutrophils

d. overproduction of abnormal erythrocytes

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

__________ is the progenitor of platelets

a. Thrombopoietin

b. Thrombocyte

c. Megakaryocyte

d. Thrombocytoblast

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Why don’t platelets form plugs in undamaged vessels?

a. platelets aren’t formed until damage occurs

b. only contact of platelets to exposed collagen fibers and von Willebrand factor causes them to be sticky and form plugs

c. they do, but the plugs are removed by macrophages

d. platelets don’t form plugs, it is the megakaryocytes that form the plugs

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Activation of the extrinsic pathway of coagulation requires exposure of the blood to _________.

a. collagen

b. tissue factor

c. prothrombin activator

d. serotonin

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

Why doesn’t a clot fill the entire vasculature system once it has started forming

a. rapid blood flow washes away and dilutes activated clotting factors

b. thrombin is inactivated by antithrombin III if it enters the general circulation

c. both a and b

d. neither a nor b

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

A patient might be prescribed an oral heparin medication if

a. they are at risk for embolism (clots that spontaneously form and wedge in blood vessels).

b. they have thrombocytopenia.

c. they are a hemophiliac.

d. they have a deficiency in a clotting factor.

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

In theory, why could it be possible for a person with Type A– blood to have a negative reaction when receiving a transfusion of whole Type O– blood (including plasma)?

a. some Type O cells possess B agglutinogens on their surface

b. the Rh factor would cross-react

c. blood transfusions can only occur within the same blood group

d. the type O blood may have high enough levels of anti-A antibodies that could cross-react with the recipient’s cells