CRAT Exam 2025 COMPREHENSIVE EXAM
QUESTIONS |FREQUENTLY TESTED QUESTIONS
|RECENTLY TESTING REAL EXAM
QUESTIONS|VERIFIED SOLUTIONS (100% CORRECT)
Chronotropic - (ANSWER)heart rate
Inotropic - (ANSWER)force of myocardial contractility
Dromotropic - (ANSWER)conduction velocity through the AV node
Systole - (ANSWER)contraction of chamber, blood is being ejected. Pressure rises
during systole.
Diastole - (ANSWER)rest, relaxation of chamber, chamber is allowed to fill.
Pressure falls during diastole.
Stroke Volume - (ANSWER)the amount of blood left ventricle pumps in each beat.
(mL/beat)
Cardiac output- definition - (ANSWER)The amount of blood pumped into the
aorta each minute. (units= mL/min)
Cardiac output- equation - (ANSWER)(HR) X (Stroke Volume) Avg. healthy adult=
4-8 L/min
, Venous return - (ANSWER)amount of blood flowing into the right heart from the
systemic ciruclation
Blood Pressure- definition - (ANSWER)force exerted by the blood against the
walls of the arteries as the ventricles contract and relax
Blood pressure- equation - (ANSWER)(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 ____. -
(ANSWER)flaccid, limp, dilated, lower HR
Excess Calcium can cause the heart to be _____. - (ANSWER)spastic contractions.
Although about 70% of ventricular filling occurs passively, ______ ______
contributes an additional 10% to 30% of blood flow to ventricular filling. -
(ANSWER)atrial kick
The area in the middle of the thoracic cavity in which the heart lies is the: -
(ANSWER)Mediastinum
The inferior surface of the heart is formed by the - (ANSWER)Right and left
ventricles
QUESTIONS |FREQUENTLY TESTED QUESTIONS
|RECENTLY TESTING REAL EXAM
QUESTIONS|VERIFIED SOLUTIONS (100% CORRECT)
Chronotropic - (ANSWER)heart rate
Inotropic - (ANSWER)force of myocardial contractility
Dromotropic - (ANSWER)conduction velocity through the AV node
Systole - (ANSWER)contraction of chamber, blood is being ejected. Pressure rises
during systole.
Diastole - (ANSWER)rest, relaxation of chamber, chamber is allowed to fill.
Pressure falls during diastole.
Stroke Volume - (ANSWER)the amount of blood left ventricle pumps in each beat.
(mL/beat)
Cardiac output- definition - (ANSWER)The amount of blood pumped into the
aorta each minute. (units= mL/min)
Cardiac output- equation - (ANSWER)(HR) X (Stroke Volume) Avg. healthy adult=
4-8 L/min
, Venous return - (ANSWER)amount of blood flowing into the right heart from the
systemic ciruclation
Blood Pressure- definition - (ANSWER)force exerted by the blood against the
walls of the arteries as the ventricles contract and relax
Blood pressure- equation - (ANSWER)(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 ____. -
(ANSWER)flaccid, limp, dilated, lower HR
Excess Calcium can cause the heart to be _____. - (ANSWER)spastic contractions.
Although about 70% of ventricular filling occurs passively, ______ ______
contributes an additional 10% to 30% of blood flow to ventricular filling. -
(ANSWER)atrial kick
The area in the middle of the thoracic cavity in which the heart lies is the: -
(ANSWER)Mediastinum
The inferior surface of the heart is formed by the - (ANSWER)Right and left
ventricles
