BIO 139 Final Exam Study Guide |177
Questions and Answers
When referring to the individual steps in clotting, what is the first step following injury to
the lining of a blood vessel?
A. Platelet plug formation
B. Firbrin deposition
C. Vascular Spasm
D. Blood turns from liquid to gel - -C.
-A molecule of hemoglobin is capable of binding how many oxygen molecules?
A. 4
B. 3
C. 2
D. 1 - -A.
-The heme group in hemoglobin contains which of the following elements that is critical
for function?
A. Calcium
B. Copper
C. Iron
D. Steel - -C.
-One of the consequences of blood doping is that it is possible for the blood to turn thick
and sludgy thus increasing its ____________. What is this physical property of the blood
describes its ability to flow?
A. Viscosity
B. thickness
C. Density
D. Weight - -A.
-A patient that has antibodies to both type A and type B will have which blood type?
A. A
B. B
C. AB
D. O - -D.
-This innermost layer of the heart is comprised of single layer vascular endothelial layers
that is continuous with the lining of the blood vessels.
A. Epicardium
B. Endocardium
C. Pericardium
D. Myocardium
E. None of the above - -B.
,-Which blood vessel returns blood to the left atrium of the heart?
A. Superior vena cava
B. Coronary Sinus
C. Aorta
D. Right and left pulmonary veins
E. Right and left pulmonary arteries - -D.
-This valve regulated blood flow from the right atrium to the right ventricle.
A. Mitral Valve
B. Aortic semilunar valve
C. Tricuspid
D. Pulmonary semilunar valve
E. None of the above - -C.
-Repolarization of the cardiomyocyte membrane potential is primarily driven by which of
the following ions?
A. Ca2+
B. Na+
C. Cl-
D. K+
E. Mg2+ - -D.
-The SA node in the heart generated an action potential how frequently?
A. 40 bpm
B. 75 bpm
C. 100 bpm
D. 60 bpm
E. None of the above - -B.
-A condition in which the heart's pacemaker is replaced by a more excitable region of the
heart is called a what?
A. Angina
B. Heart Block
C. Ventricular Fibrillation
D. Junctional Rhythm
E. Ectopic Focus - -E.
-The _________ is the only electrical connection between the heart's atria and the ventricles.
A. SA node
B. AV bundle
C. AV node
D. Purkinje fibers
E. None of the above - -B.
, -This component of the intercalated disk on a cardiomyocyte is responsible for the
electrical coupling of the heart cells.
A. Gap junction
B. Desmosome
C. Nucleus
D. A and B
E. None of these electrically couple the heart cells - -A.
-The absolute refractory period in a cardiomyocyte is capable of lasting how long?
A. 15-100ms
B. 1-2 ms
C. >200ms - -C.
-The plateau phase of the cardiac action potential is primarily due to what?
A. Ca2+ leaving the cell
B. Ca2+ entering the cell
C. Na+ entering the cell
D. K+ entering the cell
E. Cl- leaving the cell - -B.
-On an EKG the T wave is responsible for what electrical event in the cardiac cycle?
A. Atrial depolarization
B. Atrial repolarization
C. Ventricle depolarization
D. Ventricle repolarization
E. None of the above - -D.
-Roughly what percentage of the whole blood does the hematocrit account for?
A. 45%
B. 55%
C. <1%
D. 35% - -A.
-Which of the following is something that blood does NOT distribute in the body?
A. Waste
B. hormone
C. Oxygen
D. Nutrients
E. The blood distributes all of these - -E.
-The following component of blood aids in protection against infection
A. Leukocytes
B. Erythrocytes
C. Platelets
D. Plasma
E. None of the above - -A.
Questions and Answers
When referring to the individual steps in clotting, what is the first step following injury to
the lining of a blood vessel?
A. Platelet plug formation
B. Firbrin deposition
C. Vascular Spasm
D. Blood turns from liquid to gel - -C.
-A molecule of hemoglobin is capable of binding how many oxygen molecules?
A. 4
B. 3
C. 2
D. 1 - -A.
-The heme group in hemoglobin contains which of the following elements that is critical
for function?
A. Calcium
B. Copper
C. Iron
D. Steel - -C.
-One of the consequences of blood doping is that it is possible for the blood to turn thick
and sludgy thus increasing its ____________. What is this physical property of the blood
describes its ability to flow?
A. Viscosity
B. thickness
C. Density
D. Weight - -A.
-A patient that has antibodies to both type A and type B will have which blood type?
A. A
B. B
C. AB
D. O - -D.
-This innermost layer of the heart is comprised of single layer vascular endothelial layers
that is continuous with the lining of the blood vessels.
A. Epicardium
B. Endocardium
C. Pericardium
D. Myocardium
E. None of the above - -B.
,-Which blood vessel returns blood to the left atrium of the heart?
A. Superior vena cava
B. Coronary Sinus
C. Aorta
D. Right and left pulmonary veins
E. Right and left pulmonary arteries - -D.
-This valve regulated blood flow from the right atrium to the right ventricle.
A. Mitral Valve
B. Aortic semilunar valve
C. Tricuspid
D. Pulmonary semilunar valve
E. None of the above - -C.
-Repolarization of the cardiomyocyte membrane potential is primarily driven by which of
the following ions?
A. Ca2+
B. Na+
C. Cl-
D. K+
E. Mg2+ - -D.
-The SA node in the heart generated an action potential how frequently?
A. 40 bpm
B. 75 bpm
C. 100 bpm
D. 60 bpm
E. None of the above - -B.
-A condition in which the heart's pacemaker is replaced by a more excitable region of the
heart is called a what?
A. Angina
B. Heart Block
C. Ventricular Fibrillation
D. Junctional Rhythm
E. Ectopic Focus - -E.
-The _________ is the only electrical connection between the heart's atria and the ventricles.
A. SA node
B. AV bundle
C. AV node
D. Purkinje fibers
E. None of the above - -B.
, -This component of the intercalated disk on a cardiomyocyte is responsible for the
electrical coupling of the heart cells.
A. Gap junction
B. Desmosome
C. Nucleus
D. A and B
E. None of these electrically couple the heart cells - -A.
-The absolute refractory period in a cardiomyocyte is capable of lasting how long?
A. 15-100ms
B. 1-2 ms
C. >200ms - -C.
-The plateau phase of the cardiac action potential is primarily due to what?
A. Ca2+ leaving the cell
B. Ca2+ entering the cell
C. Na+ entering the cell
D. K+ entering the cell
E. Cl- leaving the cell - -B.
-On an EKG the T wave is responsible for what electrical event in the cardiac cycle?
A. Atrial depolarization
B. Atrial repolarization
C. Ventricle depolarization
D. Ventricle repolarization
E. None of the above - -D.
-Roughly what percentage of the whole blood does the hematocrit account for?
A. 45%
B. 55%
C. <1%
D. 35% - -A.
-Which of the following is something that blood does NOT distribute in the body?
A. Waste
B. hormone
C. Oxygen
D. Nutrients
E. The blood distributes all of these - -E.
-The following component of blood aids in protection against infection
A. Leukocytes
B. Erythrocytes
C. Platelets
D. Plasma
E. None of the above - -A.
