Cardiovascular System Actual Exam (2025)
comprehensive questions and verified answers (
detailed & elaborated) ACTUAL EXAM 2025 TEST!!
What is described by the Frank-Starling mechanism of the heart?
A. the relationship between end-diastolic and heart rate
B. the relationship between the end-systolic volume and stroke volume
C. the relationship between length and tension in cardiac muscle cells
D the relationship between sympathetic stimulation and stroke volume
C. the relationship between length and tension in cardiac muscle cells
According to the Frank-Starling mechanism of the heart:
A. the left ventricle ejects a larger volume of blood with each systole than the
right ventricle
B. the intrinsic rate of the heart's pacemakers is 100 beats/min
C. cardiac output increases with increased heart rate
D. stroke volume increases with increases venous return
D. stroke volume increases with increases venous return
Which of the following is NOT as effect of sympathetic stimulation of the
heart?
A. an increase in heart rate
B. a decrease in the duration of systole
C. a decrease in the slope of the pacemaker potential
D. an increase in the amount of Ca2+ entering cardiac muscle cells
C. a decrease in the slope of the pacemaker potential
Which of the following factors would NOT trend to increase systemic arterial
blood pressure?
A. increased sympathetic stimulation of the blood vessels
B.increased blood volume
C. increase venous return
, D. increased parasympathetic stimulation of the heart
E. increased activity of the skeletal muscle pump
D. increased parasympathetic stimulation of the heart
Which of the following statements concerning regulation of blood flow is
TRUE?
A. increased levels of metabolic waste products and decreased oxygen
concentration in tissues promote hyperemia through the tissue
B. If blood flow to a tissue is blocked for a period to a tissue is blocked for a
period of time and then the block is removed, the result is a reactive
hyperemia in which blood flow through the affected tissue remains low
C. According to flow auto regulation, if blood pressure to an arteriole is
decreased, blood flow will not return toward it original level until the original
blood pressure is restored
D. High levels of CO2 and metabolites tend to cause contraction in the smooth
muscle of arteriole walls
A. increased levels of metabolic waste products and decreased oxygen
concentration in tissues promote hyperemia through the tissue
Which of these best describes active hyperemia?
A. increased metabolic activity that results in vasoconstriction
B. increased metabolic activity that results in vasodilation
C. decreased blood flow to tissues that result in vasoconstriction
D. decreased blood flow to tissue that result in vasodilation
B. increased metabolic activity that results in vasodilation
Distinguishing characteristics of veins include which of the following?
A.All veins carry deoxygenated blood
B. All veins carry blood towards the heart
C. All veins have thick elastic walls
D. Veins have walls consisting only of endothelial cells
B. All veins carry blood towards the heart
The innermost layer of an artery is known as what?
A. Endothelium
B.Exothelium
C. Hyperthelium
D. Hypothelium
comprehensive questions and verified answers (
detailed & elaborated) ACTUAL EXAM 2025 TEST!!
What is described by the Frank-Starling mechanism of the heart?
A. the relationship between end-diastolic and heart rate
B. the relationship between the end-systolic volume and stroke volume
C. the relationship between length and tension in cardiac muscle cells
D the relationship between sympathetic stimulation and stroke volume
C. the relationship between length and tension in cardiac muscle cells
According to the Frank-Starling mechanism of the heart:
A. the left ventricle ejects a larger volume of blood with each systole than the
right ventricle
B. the intrinsic rate of the heart's pacemakers is 100 beats/min
C. cardiac output increases with increased heart rate
D. stroke volume increases with increases venous return
D. stroke volume increases with increases venous return
Which of the following is NOT as effect of sympathetic stimulation of the
heart?
A. an increase in heart rate
B. a decrease in the duration of systole
C. a decrease in the slope of the pacemaker potential
D. an increase in the amount of Ca2+ entering cardiac muscle cells
C. a decrease in the slope of the pacemaker potential
Which of the following factors would NOT trend to increase systemic arterial
blood pressure?
A. increased sympathetic stimulation of the blood vessels
B.increased blood volume
C. increase venous return
, D. increased parasympathetic stimulation of the heart
E. increased activity of the skeletal muscle pump
D. increased parasympathetic stimulation of the heart
Which of the following statements concerning regulation of blood flow is
TRUE?
A. increased levels of metabolic waste products and decreased oxygen
concentration in tissues promote hyperemia through the tissue
B. If blood flow to a tissue is blocked for a period to a tissue is blocked for a
period of time and then the block is removed, the result is a reactive
hyperemia in which blood flow through the affected tissue remains low
C. According to flow auto regulation, if blood pressure to an arteriole is
decreased, blood flow will not return toward it original level until the original
blood pressure is restored
D. High levels of CO2 and metabolites tend to cause contraction in the smooth
muscle of arteriole walls
A. increased levels of metabolic waste products and decreased oxygen
concentration in tissues promote hyperemia through the tissue
Which of these best describes active hyperemia?
A. increased metabolic activity that results in vasoconstriction
B. increased metabolic activity that results in vasodilation
C. decreased blood flow to tissues that result in vasoconstriction
D. decreased blood flow to tissue that result in vasodilation
B. increased metabolic activity that results in vasodilation
Distinguishing characteristics of veins include which of the following?
A.All veins carry deoxygenated blood
B. All veins carry blood towards the heart
C. All veins have thick elastic walls
D. Veins have walls consisting only of endothelial cells
B. All veins carry blood towards the heart
The innermost layer of an artery is known as what?
A. Endothelium
B.Exothelium
C. Hyperthelium
D. Hypothelium
