Chapter 14 Anatomy & Physiology

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The biconcave cells in blood that lack nuclei when they are mature are the
A. platelets
B.white blood cells.
C. red blood cells.
D. macrophages

red blood cells

Which of the following is an agranulocyte?
A. neutrophil
B. monocyte
C. eosinophil
D. basophil


The normal white blood cell count is between..
A 500.000- 1.000.000 cells
B 50.000-100.000 cells
C. 5.000 – 10.000 cells
D. 500 -1000 cells

5.000-10.000 cells

A primary function of lymphocytes is to :
A. act against foreign substances
B. release substances that initiate blood clots
C. phagocytize damaged cells.
D. produce enzymes that dissolve blood clots

act against foreign substances

Platelets are best defined as
A. giant, multinucleated cells.
B. cytoplasmic fragments of cells.
C. immature leukocytes.
D. lymphoid cells.

cytoplasmic fragments of cells

Non protein nitrogenous substances include :
A. amino acids
B. urea
C. uric acid
D. all of the choices are correct.

amino acids, urea, uric acid.

As a platelet plug forms, platelets release the vasocontracting substance called…
A. collagen
B. creatine.
C. serotonin
D. fibrin


The basic event in the formation of a blood clot is the change of
A. fibrinogent to fibrin
B. fibrin to fibrinogen
C. thrombin to prothrombin
D. vitamin K to prothrombin

fibrinogen to fibrin

Type AB blood contains
A. agglutinogen A and B
B. agglutinogen A and agglutinin B
C. agglutinin A and agglutinogen B
D. agglutinin A and B

agglutinogen A and B

which of the following elements is included in hemoglobin molecules?
A. cobalt
B. copper.
C. iron
D. iodine


Which of the following usually accounts for the smallest percentage of leukocyctes in a blood sample?
A monocytes
B. eosinophils
C. basophils.
D. lymphocytes


The most active phagocytic cells among the leukocytes are
A. basophils and eosinophils
B. neutrophils and monocytes
C. lymphocytes and neutrophils
D. monocytes and lymphocytes

neutrophils and monocytes

The most important action of plasma albumins is
A acting as antivbodies of immunity
B. helping to control bleeding
C. serving as energy sources
D. helping to maintain blood osmotic pressures

helping to maintain osmotic pressures

Of the plasma electrolytes, the most abundant are
A. sodium and chloride ions.
B. sodium and potassium ions.
C. potassium and calcium ions.
D. phosphate and sulfate ions.

sodium and chloride ions

Which of the following serves as an enzyme in the blood coagulation mechanism?
A. thrombin
B. prothrombin
C. fibrinogen
D. fibrin


The condition called cyanosis is caused by an increased blood concentration of
A. deoxyhemoglobin
B. oxyhemoglobin
C. carbon dioxide
D. carbon monoxide

carbon dioxide

Sickle-cell anemia is caused by
A a lack of dietary iron
B. a lack of intrinsic factor
C an excess of hemoglobin
D. an abnormal form of hemoglobin

an abnormal form of hemoglobin

Newborns are sometimes exposed to fluorescent light as a treatment for
A sickle-cell anemia
B cyanosis
C physiologic jaundice
D pernicious anemia

physiologic jaundice

The form of anemia that is caused by a lack of dietary iron is called
A pernicious anemia
B aplastic anemia
C hemolytic anemia
D hypochromic anemia

hypochromic anemia

Pus is composed of
A leukocytes
B bacteria
C damaged body cells
D all of the choices are correct

all of the choices are correct

Patients with leukimia have a tendency to bleed because they have a deficiency of
A vitamin K
B red blood cells
C platelets.
D leukocyctes


Erythroblastosis fetalis can be prevented by treating
A Rh positive mothers with Rh + blood cells
B. Rh + mothers with anti-Rh agglutinin
C. Rh – mothers with Rh + blood cells
D. Rh – mothers with anti Rh agglutinin

Rh – mothers with anti Rh agglutinin

If body cells lack LDL receptors, the plasma concentration of LDL molecules
A increases and the blood cholesterol concentration increases
B. increases and the blood cholesterol concentration decreases
C. decreases and the blood cholesterol concentration increases
D decreases and the blood cholesterol concentration decreases.

increases and the blood cholesterol concentration increases

Prothrombin time is a blood test used to evaluate
A intravascular clotting
B the Hageman factor
C extrinsic clotting factor
D intrinsic clotting factor

extrinsic clotting factor

Two substances that are useful for dissolving blood clots are
A thrombus and embolus
B urokinase and streptokinase
C factor IV and factor XII
D calcium ions and prothrombin activator

urokinase and streptokinase

The condition called thrombocytopenia is due to a deficiency of
A vitamin K
B. platelets.
C. von Willebrand factor
D. factor VII


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