Download Chapter 17 - next2eden.net

Active Lecture Questions
CHAPTER
Blood
Copyright © 2010 Pearson Education, Inc.
17
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 © 2010 Pearson Education, Inc.
After centrifuging, of the listed blood
components, which contains the
components of immune function?
a. Plasma
b. Buffy coat
c. Erythrocytes
d. Hematocrit
Copyright © 2010 Pearson Education, Inc.
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 © 2010 Pearson Education, Inc.
Red blood cells are efficient oxygen
transport cells. Of the following
characteristics, which is the major
contributor to the significant oxygencarrying 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 myoglobin.
Copyright © 2010 Pearson Education, Inc.
Each hemoglobin can transport ________
oxygen atoms.
a. 4
b. 40
c. 400
d. 4000
Copyright © 2010 Pearson Education, Inc.
Oxygen binds to the _______ portion of
hemoglobin.
a. globin
b. oxyhemoglobin
c. iron atom
d. amino acid
Copyright © 2010 Pearson Education, Inc.
A patient with low iron levels would
experience which of the following
symptoms?
a. An increased white blood cell count
b. An increase in energy level
c. An increase in fatigue
d. A decreased white blood cell count
Copyright © 2010 Pearson Education, Inc.
A hematopoietic stem cell will give rise to
__________.
a. erythrocytes
b. leukocytes
c. platelets
d. all of the above
Copyright © 2010 Pearson Education, Inc.
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. The oxygen-carrying capacity remains
unchanged despite elevated red blood cell
counts.
c. Red blood cell counts remain unchanged,
but the number of reticulocytes increases.
d. Blood viscosity levels decrease while
oxygen-carrying capacity increases.
Copyright © 2010 Pearson Education, Inc.
What response would you expect after
traveling to high altitude for 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 kidneys would secrete elevated
amounts of erythropoietin.
d. There would be no change in blood
composition.
Copyright © 2010 Pearson Education, Inc.
If a patient has pernicious anemia, the
inability of the body to absorb vitamin B12,
the patient __________.
a. would have reduced blood iron levels
b. would have a decreased number of red
blood cells
c. would have increased levels of
hemoglobin
d. would not experience any effects on red
blood cells
Copyright © 2010 Pearson Education, Inc.
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. Capillaries break open, flooding a damaged area
with white blood cells.
c. The damaged tissues synthesize their own white
blood cells.
d. None of the statements are true.
Copyright © 2010 Pearson Education, Inc.
An elevated neutrophil count would be
indicative of ________.
a. an allergic reaction
b. a cancer
c. an acute bacterial infection
d. a parasitic infection
Copyright © 2010 Pearson Education, Inc.
Antihistamines counter the actions of which
white blood cells?
a. Neutrophils
b. Lymphocytes
c. Bbasophils
d. Eosinophils
Copyright © 2010 Pearson Education, Inc.
Leukemia is a general descriptor for which
of the following disorders?
a. An abnormally low white blood cell count
b. Overproduction of abnormal leukocytes
c. Elevated counts of normal neutrophils
d. Overproduction of abnormal erythrocytes
Copyright © 2010 Pearson Education, Inc.
A __________ is the progenitor of platelets.
a. thrombopoietin
b. thrombocyte
c. megakaryocyte
d. thrombocytoblast
Copyright © 2010 Pearson Education, Inc.
Why don’t platelets form plugs in
undamaged vessels?
a. Platelets aren’t formed until vessel
damage occurs.
b. Only contact of platelets with exposed
collagen fibers and von Willebrand factor
causes them to be sticky and form plugs.
c. Plugs do form, but are removed by
macrophages.
d. Platelets don’t form plugs, it is the
megakaryocytes that form the plugs.
Copyright © 2010 Pearson Education, Inc.
Activation of the extrinsic pathway of
coagulation requires exposure of the blood
to _________.
a. collagen
b. tissue factor III
c. prothrombin activator
d. serotonin
Copyright © 2010 Pearson Education, Inc.
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 occur.
d. Neither a nor b occurs.
Copyright © 2010 Pearson Education, Inc.
An oral heparin medication might be
prescribed for a patient who:
a. is at risk for embolism (clots that
spontaneously form and wedge in blood
vessels).
b. has thrombocytopenia.
c. is a hemophiliac.
d. has a deficiency in a clotting factor.
Copyright © 2010 Pearson Education, Inc.
Why is it possible for a person with type A
negative blood to have a negative reaction
when receiving a transfusion of whole type
O negative blood?
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.
Copyright © 2010 Pearson Education, Inc.