CRAT Exam WITH 100% CORRECT
ANSWERS 2024
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
, CRAT Exam WITH 100% CORRECT
ANSWERS 2024
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
ANSWERS 2024
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
, CRAT Exam WITH 100% CORRECT
ANSWERS 2024
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
