CRAT EXAM QUESTIONS WITH CORRECT ANSWERS RATED A+

CRAT EXAM QUESTIONS WITH CORRECT
ANSWERS 2026-2027 RATED A+
Chronotropic - CORRECT ANSWER -heart rate



Inotropic - CORRECT ANSWER -force of myocardial contractility



Dromotropic - CORRECT ANSWER -conduction velocity through the AV node



Systole - CORRECT ANSWER -contraction of chamber, blood is being ejected. Pressure rises
during systole.



Diastole - CORRECT ANSWER -rest, relaxation of chamber, chamber is allowed to fill. Pressure
falls during diastole.



Stroke Volume - CORRECT ANSWER -the amount of blood left ventricle pumps in each beat.
(mL/beat)



Cardiac output- definition - CORRECT ANSWER -The amount of blood pumped into the aorta
each minute. (units= mL/min)



Cardiac output- equation - CORRECT ANSWER -(HR) X (Stroke Volume) Avg. healthy adult= 4-8
L/min



Venous return - CORRECT ANSWER -amount of blood flowing into the right heart from the
systemic ciruclation

, Blood Pressure- definition - CORRECT ANSWER -
X2 X2 X2 X2 X2 X2




force exerted by the blood against the walls of the arteries as the ventricles contract and relax
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




Blood pressure- equation - CORRECT ANSWER -
X2 X2 X2 X2 X2 X2




(cardiac output) X (peripheral resistance) or you could put it another way: (HR)(Stroke Volume)(P
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




eripheral Resistance) X2




An increase in Potassium or decrease in Calcium cause the heart to be
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 .-
X2




CORRECT ANSWER -flaccid, limp, dilated, lower HR
X2 X2 X2 X2 X2 X2 X2




Excess Calcium can cause the heart to be
X2 X2 X2 X2 X2 X2 X2 X2 . - CORRECT ANSWER -spastic contractions.
X2 X2 X2 X2 X2




Although about 70% of ventricular filling occurs passively,
X2 X2 X2 X2 X2 X2 X2 X2




contributes an X2 X2




additional 10% to 30% of blood flow to ventricular filling. - CORRECT ANSWER -atrial kick
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




The area in the middle of the thoracic cavity in which the heart lies is the: - CORRECT ANSWER -
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




Mediastinum
X2




The inferior surface of the heart is formed by the - CORRECT ANSWER -Right and left ventricles
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




Receives blood from the superior and inferior vena cavae and the coronary sinus -
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




CORRECT ANSWER -The right atrium
X2 X2 X2 X2 X2




The right ventricle - CORRECT ANSWER -
X2 X2 X2 X2 X2 X2




Pumps unoxygenated blood into the pulmonary circulation
X2 X2 X2 X2 X2 X2




The X2




pericardium is the inner layer of the pericardium, which is also the outer layer of the he X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




art wall called the
X2 . - CORRECT ANSWER -Visceral, epicardium
X2 X2 X2 X2 X2 X2 X2 X2