CRAT UPDATED ACTUAL EXAM QUESTIONS AND CORRECT ANSWERS COMPLETE STUDY GUIDE

CRAT UPDATED ACTUAL EXAM
QUESTIONS AND CORRECT ANSWERS
COMPLETE STUDY GUIDE

●● 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