BME Exam 2| Questions with 100%
Correct Answers
In the ventricles, the action potential travels along the interventricular septum to the
apex of the heart, where it then spreads superiorly along the ventricle walls. -
ANSWER TRUE
the semilunar valves remain open throughout the ____ phase of the cardiac cycle. -
ANSWER late ventricular systole
the atria remain in diastole throughout both the _______ phases of the cardiac cycle. -
ANSWER Ventricular systole and ventricular diastole
Positive inotropes allow the heart to pump____ blood with fewer heart beats. They do
this by _______ the ebdsystolic volume (ESV) - ANSWER more, decreasing
An individual with high blood pressure (hypertension) is expected to benefit from the
administration of ________ inotropic drugs that ________ the hearts workload. -
ANSWER negative, decrease
The expected effect of the drug Digoxin is to ________ venbtricular contaction and
______ stroke volume. - ANSWER strengthen, increase
, During which phase of the cardiac cycle does aortic pressure reach its maximum? -
ANSWER Ventricular ejection
During which complete phase of the cardiac cycle do both the atria and ventricles relax?
- ANSWER Isovolumetric - ventricles relax
Which of the following statements is not true regarding ventricular systole? -
ANSWER The ventricles relax.
Which of the following is caused by excitation of cardiac muscle? - ANSWER The
opening of voltage sensitive membrane calcium channels on the T tubules
An action potential in a cardiac muscle fiber is identical to an action potential in
a skeletal muscle fiber. - ANSWER False
The sum of the blood velocity of arterioles is equal to the blood velocity of the artery that
feeds them. - ANSWER True
How do materials get from the blood to the surrounding tissues? - ANSWER Diffusion,
filtration and absorption, and transcytosis
The blood flow to the body organs __________. - ANSWER Is inversely proportional to
the resistance of the arterioles leading to them
Correct Answers
In the ventricles, the action potential travels along the interventricular septum to the
apex of the heart, where it then spreads superiorly along the ventricle walls. -
ANSWER TRUE
the semilunar valves remain open throughout the ____ phase of the cardiac cycle. -
ANSWER late ventricular systole
the atria remain in diastole throughout both the _______ phases of the cardiac cycle. -
ANSWER Ventricular systole and ventricular diastole
Positive inotropes allow the heart to pump____ blood with fewer heart beats. They do
this by _______ the ebdsystolic volume (ESV) - ANSWER more, decreasing
An individual with high blood pressure (hypertension) is expected to benefit from the
administration of ________ inotropic drugs that ________ the hearts workload. -
ANSWER negative, decrease
The expected effect of the drug Digoxin is to ________ venbtricular contaction and
______ stroke volume. - ANSWER strengthen, increase
, During which phase of the cardiac cycle does aortic pressure reach its maximum? -
ANSWER Ventricular ejection
During which complete phase of the cardiac cycle do both the atria and ventricles relax?
- ANSWER Isovolumetric - ventricles relax
Which of the following statements is not true regarding ventricular systole? -
ANSWER The ventricles relax.
Which of the following is caused by excitation of cardiac muscle? - ANSWER The
opening of voltage sensitive membrane calcium channels on the T tubules
An action potential in a cardiac muscle fiber is identical to an action potential in
a skeletal muscle fiber. - ANSWER False
The sum of the blood velocity of arterioles is equal to the blood velocity of the artery that
feeds them. - ANSWER True
How do materials get from the blood to the surrounding tissues? - ANSWER Diffusion,
filtration and absorption, and transcytosis
The blood flow to the body organs __________. - ANSWER Is inversely proportional to
the resistance of the arterioles leading to them
