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A&P > Blood 4 > Flashcards

Blood 4 Flashcards

1
Q 
Erythrocytes are formed from stem cells
called
A.	hemocytoblasts.
B.	reticulocytes.
C.	band cells.
D.	myeloid cells.
E.	pronormoblasts.
A

A. hemocytoblasts.

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2
Q

The common pathway of coagulation begins
with the
A. sticking of platelets to damaged tissue.
B. activation of a proenzyme exposed to collagen.
C. release of tissue factor by damaged endothelium.
D. activating of a clotting factor that converts
prothrombin to thrombin.
E. activation of a clotting factor that converts fibrinogen
to fibrin.

A

D. activating of a clotting factor that converts

prothrombin to thrombin.

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3
Q

The RBCs of a fetus and an adult are the
same.
A. True
B. False

A

B. False

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4
Q

When plasma oxygen levels are low,
hemoglobin releases oxygen.
A. True
B. False

A

A. True

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5
Q 
The porphyrin ring of heme contains an
atom of
A.	magnesium.
B.	calcium.
C.	iron.
D.	sodium.
E.	copper.
A

C. iron.

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6
Q 
\_\_\_\_\_ are immature erythrocytes that are
sometimes found in peripheral blood
samples.
A.	Erythroblasts
B.	Normoblasts
C.	Myeloblasts
D.	Band cells
E.	Reticulocytes
A

E. Reticulocytes

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7
Q 
The process of fibrinolysis
A.	activates fibrinogen.
B.	draws torn edges of damaged tissue closer
together.
C.	dissolves clots.
D.	forms emboli.
E.	forms thrombi.
A

C. dissolves clots.

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8
Q 
Which of the following situations would
probably not result in anemia?
A.	hemorrhage
B.	liver disease
C.	lack of vitamin B12 in the diet
D.	disease of the red bone marrow
E.	dietary deficiency of iron
A

B. liver disease

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9
Q

In which of the following situations would
you expect the blood level of bilirubin to
rise above normal?
A. a person suffering from anemia
B. an alcoholic with a damaged liver

A

B. an alcoholic with a damaged liver

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10
Q

Erythropoiesis increases when
A. oxygen levels in the blood increase.
B. oxygen levels in the blood decrease.
C. carbon dioxide levels in the blood increase.
D. carbon dioxide levels in the blood decrease.
E. protein levels in the blood increase.

A

B. oxygen levels in the blood decrease.

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11
Q

In some newborn infants it is not uncommon for
the spleen to destroy red blood cells faster than
the liver can conjugate the bilirubin. This
situation would result in
A. more bilirubin appearing in the urine.
B. more bilirubin appearing in the feces.
C. more bilirubin appearing in the blood plasma.
D. more bilirubin appearing in the bile.
E. more bilirubin appearing in tissue fluid.

A

C. more bilirubin appearing in the blood plasma.

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12
Q 
The enzyme that can digest the fibrin
strands and cause erosion of the clot’s
foundation is
A.	thrombin.
B.	plasmin.
C.	heparin.
D.	urokinase.
E.	streptokinase.
A

B. plasmin.

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13
Q

A decrease in the amount of transferrin in
the blood would result in
A. increased levels of bilirubin in the blood.
B. increased amounts of hemosiderin in the liver.
C. increased amounts of hemoglobin in the
blood.
D. increased absorption of iron from the
intestine.
E. increased storage of iron in the liver.

A

D. increased absorption of iron from the

intestine.

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14
Q 
The percentage of whole blood occupied
by cellular elements is the
A.	viscosity.
B.	specific gravity.
C.	packed volume.
D.	hematocrit.
E.	differential cell count.
A

D. hematocrit.

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15
Q 
The disease sickle cell anemia is a good
example of what can happen when
A.	there is not enough iron in the diet.
B.	there is not sufficient heme in the
hemoglobin.
C.	the amino acid sequence of normal globin is
altered.
D.	a red blood cell does not bind enough oxygen.
E.	hemolysis occurs.
A

C. the amino acid sequence of normal globin

is altered.

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16
Q 
During a viral infection you would expect
to see increased numbers of
A.	neutrophils.
B.	eosinophils.
C.	basophils.
D.	lymphocytes.
E.	thrombocytes.
A

D. lymphocytes.

17
Q 
Tissue thromboplastin is formed in the
\_\_\_\_\_ pathway.
A.	extrinsic
B.	intrinsic
C.	common
D.	retraction
E.	fibrinolytic
A

A. extrinsic

18
Q 
A sample of tissue from an injury shows a
large number of basophils. This would
indicate that the tissue was
A.	abscessed.
B.	inflamed.
C.	being rejected.
D.	infected by viruses.
E.	none of the above
A

B. inflamed.

19
Q 
A normal adult hematocrit would be
A.	100.
B.	75.
C.	66.
D.	45.
E.	10.
A

D. 45.

20
Q 
Rat poison contains a toxin that blocks the
liver’s ability to utilize vitamin K. Animals that
consume rat poison would die of
A.	asphyxiation.
B.	acidosis.
C.	hemorrhage.
D.	thrombocytopenia.
E.	aplastic anemia.
A

C. hemorrhage.

21
Q

A molecule that activates plasminogen
prior to the time that a clot forms would
A. cause clot formation to take longer.
B. cause clot formation to proceed faster.
C. have no effect on the rate of clot formation.

A

A. cause clot formation to take longer.

22
Q

How would a decrease in the
concentration of calcium ions in the blood
affect the process of hemostasis?
A. Platelet plugs would fail to form.
B. Coagulation would proceed more rapidly.
C. Coagulation would proceed more slowly.
D. Retraction would occur prematurely.
E. Plasmin would fail to function.

A

C. Coagulation would proceed more slowly.

23
Q 
A person’s blood type is determined by
the
A.	size of the red blood cells.
B.	shape of the red blood cells.
C.	chemical character of the hemoglobin.
D.	presence or absence of specific molecules on
the cell membrane.
E.	number of specific molecules on the cell
membrane.
A

D. presence or absence of specific molecules

on the cell membrane.

24
Q

When a person who lives in a city at sea level
vacations in the Rocky Mountains, you would
expect to observe an increase in
A. the number of platelets in their blood.
B. the number of lymphocytes in their blood.
C. their red blood cell count.
D. their white blood cell count.
E. the density of their bone marrow.

A

C. their red blood cell count.

25
Q 
A constriction of the arteries that carry
blood to the kidneys would result in
A.	anemia.
B.	increased numbers of lymphocytes.
C.	increased erythropoiesis.
D.	decreased erythropoiesis.
E.	decreased elimination of vitamin K.
A

C. increased erythropoiesis.

A&P (34 decks)

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