CRAT Exam ACTUAL QUESTIONS AND
CORRECT ANSWERS
Chronotropic - CORRECT ANSWERS heart rate
Inotropic - CORRECT ANSWERS force of myocardial contractility
Dromotropic - CORRECT ANSWERS conduction velocity through the
AV node
Systole - CORRECT ANSWERS contraction of chamber, blood is being
ejected. Pressure rises during systole.
Diastole - CORRECT ANSWERS rest, relaxation of chamber, chamber
is allowed to fill. Pressure falls during diastole.
Stroke Volume - CORRECT ANSWERS the amount of blood left
ventricle pumps in each beat. (mL/beat)
Cardiac output- definition - CORRECT ANSWERS The amount of
blood pumped into the aorta each minute. (units= mL/min)
Cardiac output- equation - CORRECT ANSWERS (HR) X (Stroke
Volume) Avg. healthy adult= 4-8 L/min
Venous return - CORRECT ANSWERS amount of blood flowing into
the right heart from the systemic ciruclation
, Blood Pressure- definition - CORRECT ANSWERS force exerted by the
blood against the walls of the arteries as the ventricles contract and relax
Blood pressure- equation - CORRECT ANSWERS (cardiac output) X
(peripheral resistance) or you could put it another way: (HR)(Stroke
Volume)(Peripheral Resistance)
An increase in Potassium or decrease in Calcium cause the heart to be ____. -
CORRECT ANSWERS flaccid, limp, dilated, lower HR
Excess Calcium can cause the heart to be _____. - CORRECT ANSWERS
spastic contractions.
Although about 70% of ventricular filling occurs passively, ______ ______
contributes an additional 10% to 30% of blood flow to ventricular filling. -
CORRECT ANSWERS atrial kick
The area in the middle of the thoracic cavity in which the heart lies is the: -
CORRECT ANSWERS Mediastinum
The inferior surface of the heart is formed by the - CORRECT ANSWERS
Right and left ventricles
Receives blood from the superior and inferior vena cavae and the coronary sinus
- CORRECT ANSWERS The right atrium
The right ventricle - CORRECT ANSWERS Pumps unoxygenated blood
into the pulmonary circulation
CORRECT ANSWERS
Chronotropic - CORRECT ANSWERS heart rate
Inotropic - CORRECT ANSWERS force of myocardial contractility
Dromotropic - CORRECT ANSWERS conduction velocity through the
AV node
Systole - CORRECT ANSWERS contraction of chamber, blood is being
ejected. Pressure rises during systole.
Diastole - CORRECT ANSWERS rest, relaxation of chamber, chamber
is allowed to fill. Pressure falls during diastole.
Stroke Volume - CORRECT ANSWERS the amount of blood left
ventricle pumps in each beat. (mL/beat)
Cardiac output- definition - CORRECT ANSWERS The amount of
blood pumped into the aorta each minute. (units= mL/min)
Cardiac output- equation - CORRECT ANSWERS (HR) X (Stroke
Volume) Avg. healthy adult= 4-8 L/min
Venous return - CORRECT ANSWERS amount of blood flowing into
the right heart from the systemic ciruclation
, Blood Pressure- definition - CORRECT ANSWERS force exerted by the
blood against the walls of the arteries as the ventricles contract and relax
Blood pressure- equation - CORRECT ANSWERS (cardiac output) X
(peripheral resistance) or you could put it another way: (HR)(Stroke
Volume)(Peripheral Resistance)
An increase in Potassium or decrease in Calcium cause the heart to be ____. -
CORRECT ANSWERS flaccid, limp, dilated, lower HR
Excess Calcium can cause the heart to be _____. - CORRECT ANSWERS
spastic contractions.
Although about 70% of ventricular filling occurs passively, ______ ______
contributes an additional 10% to 30% of blood flow to ventricular filling. -
CORRECT ANSWERS atrial kick
The area in the middle of the thoracic cavity in which the heart lies is the: -
CORRECT ANSWERS Mediastinum
The inferior surface of the heart is formed by the - CORRECT ANSWERS
Right and left ventricles
Receives blood from the superior and inferior vena cavae and the coronary sinus
- CORRECT ANSWERS The right atrium
The right ventricle - CORRECT ANSWERS Pumps unoxygenated blood
into the pulmonary circulation
