HPEX 475 Exam 1
What equation is the best indicator of myocardial work? correct
answersHeart Rate x Systolic Blood Pressure
How much ATP produced in the heart accounts for contractile work.
correct answers2/3
Which heart valve is located between the right atria and right
ventricle? correct answersTricuspid valve
Per milligram, which tissue type has the greatest number of
mitochondria? correct answersCardiac muscle
What example best describes how coronary artery blood flow is maintained
during tachycardia? correct answersThe diastolic phase is reduced, but flow
is increased due to increased aortic pressure.
Which heart valve is located between the right ventricle and pulmonary
artery? correct answersPulmonic valve
What is primary regulator of coronary blood flow? correct
answersAortic pressure The left atria receives blood directly from the:
correct answersPulmonary veins
Theoretically, removal of the pericardium would result in an increase
in: correct answersStroke volume
Which coronary artery is often termed the "Widowmaker"? correct
answersLeft anterior descending
Under normal conditions, what is the correct pathway of electrical activity
conduction through the heart? correct answersSA node >> AV Node >>
Bundle of His >> Purkinje fibers
Which phase of the cardiac cell action potential involves the rapid
movement of sodium (Na+) ions into the cell? correct answersPhase 0
During the ventricular filling phase of the cardiac cycle, what drives the
majority of the filling? correct answersPassive suction
During the isovolumetric contraction phase of the cardiac cycle the AV
valves are
and the semilunar valves are . correct answersclosed;
closed
What equation is the best indicator of myocardial work? correct
answersHeart Rate x Systolic Blood Pressure
How much ATP produced in the heart accounts for contractile work.
correct answers2/3
Which heart valve is located between the right atria and right
ventricle? correct answersTricuspid valve
Per milligram, which tissue type has the greatest number of
mitochondria? correct answersCardiac muscle
What example best describes how coronary artery blood flow is maintained
during tachycardia? correct answersThe diastolic phase is reduced, but flow
is increased due to increased aortic pressure.
Which heart valve is located between the right ventricle and pulmonary
artery? correct answersPulmonic valve
What is primary regulator of coronary blood flow? correct
answersAortic pressure The left atria receives blood directly from the:
correct answersPulmonary veins
Theoretically, removal of the pericardium would result in an increase
in: correct answersStroke volume
Which coronary artery is often termed the "Widowmaker"? correct
answersLeft anterior descending
Under normal conditions, what is the correct pathway of electrical activity
conduction through the heart? correct answersSA node >> AV Node >>
Bundle of His >> Purkinje fibers
Which phase of the cardiac cell action potential involves the rapid
movement of sodium (Na+) ions into the cell? correct answersPhase 0
During the ventricular filling phase of the cardiac cycle, what drives the
majority of the filling? correct answersPassive suction
During the isovolumetric contraction phase of the cardiac cycle the AV
valves are
and the semilunar valves are . correct answersclosed;
closed
