CRAT Exam NEW 2023-2024 /Questions And
Answers Graded (A+)
Quiz :Chronotropic - Answer :heart rate
Quiz :Inotropic - Answer :force of myocardial contractility
Quiz :Dromotropic - Answer :conduction velocity through the AV node
Quiz :Systole - Answer :contraction of chamber, blood is being ejected.
Pressure rises during systole.
Quiz :Diastole - Answer :rest, relaxation of chamber, chamber is allowed to
fill. Pressure falls during diastole.
Quiz :Stroke Volume - Answer :the amount of blood left ventricle pumps in
each beat. (mL/beat)
Quiz :Cardiac output- definition - Answer :The amount of blood pumped into
the aorta each minute. (units= mL/min)
Quiz :Cardiac output- equation - Answer :(HR) X (Stroke Volume) Avg. healthy
adult= 4-8 L/min
Quiz :Venous return - Answer :amount of blood flowing into the right heart
from the systemic ciruclation
Quiz :Blood Pressure- definition - Answer :force exerted by the blood against
the walls of the arteries as the ventricles contract and relax
Quiz :Blood pressure- equation - Answer :(cardiac output) X (peripheral
resistance) or you could put it another way: (HR)(Stroke Volume)(Peripheral
Resistance)
Quiz :An increase in Potassium or decrease in Calcium cause the heart to be
____. - Answer :flaccid, limp, dilated, lower HR
Quiz :Excess Calcium can cause the heart to be _____. - Answer :spastic
contractions.
, Quiz :Although about 70% of ventricular filling occurs passively, ______
______ contributes an additional 10% to 30% of blood flow to ventricular
filling. - Answer :atrial kick
Quiz :The area in the middle of the thoracic cavity in which the heart lies is
the: - Answer :Mediastinum
Quiz :The inferior surface of the heart is formed by the - Answer :Right and
left ventricles
Quiz :Receives blood from the superior and inferior vena cavae and the
coronary sinus - Answer :The right atrium
Quiz :The right ventricle - Answer :Pumps unoxygenated blood into the
pulmonary circulation
Quiz :The _____ pericardium is the inner layer of the pericardium, which is
also the outer layer of the heart wall called the _____. - Answer :Visceral,
epicardium
Quiz :When a ventricle relaxes in the normal heart, blood is prevented from
flowing back into it by - Answer :A semilunar valve
Quiz :Which of the following conditions are potentially reversible? -
Answer :Myocardial ischemia and myocardial injury
Quiz :Which of the following is the innermost layer of the heart that lines its
inner chambers, valves and is continuous with the innermost layers of the
arteries, veins and capillaries of the body? - Answer :Endocardium
Quiz :Which of the following statements is CORRECT - Answer :A branch of
the right coronary artery supplies the right atrium and the right ventricle
Quiz :The main electrolytes that affect cardiac function are - Answer :Sodium,
potassium, chloride, calcium
Quiz :When an ECG machine is properly calibrated, a 1-millivolt (mV) electrical
signal will produce a deflection measuring exactly ______ tall. - Answer :Ten
millimeters
Answers Graded (A+)
Quiz :Chronotropic - Answer :heart rate
Quiz :Inotropic - Answer :force of myocardial contractility
Quiz :Dromotropic - Answer :conduction velocity through the AV node
Quiz :Systole - Answer :contraction of chamber, blood is being ejected.
Pressure rises during systole.
Quiz :Diastole - Answer :rest, relaxation of chamber, chamber is allowed to
fill. Pressure falls during diastole.
Quiz :Stroke Volume - Answer :the amount of blood left ventricle pumps in
each beat. (mL/beat)
Quiz :Cardiac output- definition - Answer :The amount of blood pumped into
the aorta each minute. (units= mL/min)
Quiz :Cardiac output- equation - Answer :(HR) X (Stroke Volume) Avg. healthy
adult= 4-8 L/min
Quiz :Venous return - Answer :amount of blood flowing into the right heart
from the systemic ciruclation
Quiz :Blood Pressure- definition - Answer :force exerted by the blood against
the walls of the arteries as the ventricles contract and relax
Quiz :Blood pressure- equation - Answer :(cardiac output) X (peripheral
resistance) or you could put it another way: (HR)(Stroke Volume)(Peripheral
Resistance)
Quiz :An increase in Potassium or decrease in Calcium cause the heart to be
____. - Answer :flaccid, limp, dilated, lower HR
Quiz :Excess Calcium can cause the heart to be _____. - Answer :spastic
contractions.
, Quiz :Although about 70% of ventricular filling occurs passively, ______
______ contributes an additional 10% to 30% of blood flow to ventricular
filling. - Answer :atrial kick
Quiz :The area in the middle of the thoracic cavity in which the heart lies is
the: - Answer :Mediastinum
Quiz :The inferior surface of the heart is formed by the - Answer :Right and
left ventricles
Quiz :Receives blood from the superior and inferior vena cavae and the
coronary sinus - Answer :The right atrium
Quiz :The right ventricle - Answer :Pumps unoxygenated blood into the
pulmonary circulation
Quiz :The _____ pericardium is the inner layer of the pericardium, which is
also the outer layer of the heart wall called the _____. - Answer :Visceral,
epicardium
Quiz :When a ventricle relaxes in the normal heart, blood is prevented from
flowing back into it by - Answer :A semilunar valve
Quiz :Which of the following conditions are potentially reversible? -
Answer :Myocardial ischemia and myocardial injury
Quiz :Which of the following is the innermost layer of the heart that lines its
inner chambers, valves and is continuous with the innermost layers of the
arteries, veins and capillaries of the body? - Answer :Endocardium
Quiz :Which of the following statements is CORRECT - Answer :A branch of
the right coronary artery supplies the right atrium and the right ventricle
Quiz :The main electrolytes that affect cardiac function are - Answer :Sodium,
potassium, chloride, calcium
Quiz :When an ECG machine is properly calibrated, a 1-millivolt (mV) electrical
signal will produce a deflection measuring exactly ______ tall. - Answer :Ten
millimeters
