CRAT Exam
Chronotropic correct answerheart rate
Inotropic correct answerforce of myocardial contractility
Dromotropic correct answerconduction velocity through the AV node
Systole correct answercontraction of chamber, blood is being ejected. Pressure rises during systole.
Diastole correct answerrest, relaxation of chamber, chamber is allowed to fill. Pressure falls during
diastole.
Stroke Volume correct answerthe amount of blood left ventricle pumps in each beat. (mL/beat)
Cardiac output- definition correct answerThe 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 answeramount of blood flowing into the right heart from the systemic ciruclation
Blood Pressure- definition correct answerforce exerted by the blood against the walls of the arteries as
the ventricles contract and relax
Blood pressure- equation correct 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 ____. correct answerflaccid, limp,
dilated, lower HR
Excess Calcium can cause the heart to be _____. correct answerspastic contractions.
Although about 70% of ventricular filling occurs passively, ______ ______ contributes an additional 10%
to 30% of blood flow to ventricular filling. correct answeratrial kick
The area in the middle of the thoracic cavity in which the heart lies is the: correct answerMediastinum
The inferior surface of the heart is formed by the correct answerRight and left ventricles
Receives blood from the superior and inferior vena cavae and the coronary sinus correct answerThe
right atrium
The right ventricle correct answerPumps unoxygenated blood into the pulmonary circulation
The _____ pericardium is the inner layer of the pericardium, which is also the outer layer of the heart
wall called the _____. correct answerVisceral, epicardium
When a ventricle relaxes in the normal heart, blood is prevented from flowing back into it by correct
answerA semilunar valve
Which of the following conditions are potentially reversible? correct answerMyocardial ischemia and
myocardial injury
Which of the following is the innermost layer of the heart that lines its inner chambers, valves and is
continuous with the innermost layers of the arteries, veins and capillaries of the body? correct
answerEndocardium
Which of the following statements is CORRECT correct answerA branch of the right coronary artery
supplies the right atrium and the right ventricle
Chronotropic correct answerheart rate
Inotropic correct answerforce of myocardial contractility
Dromotropic correct answerconduction velocity through the AV node
Systole correct answercontraction of chamber, blood is being ejected. Pressure rises during systole.
Diastole correct answerrest, relaxation of chamber, chamber is allowed to fill. Pressure falls during
diastole.
Stroke Volume correct answerthe amount of blood left ventricle pumps in each beat. (mL/beat)
Cardiac output- definition correct answerThe 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 answeramount of blood flowing into the right heart from the systemic ciruclation
Blood Pressure- definition correct answerforce exerted by the blood against the walls of the arteries as
the ventricles contract and relax
Blood pressure- equation correct 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 ____. correct answerflaccid, limp,
dilated, lower HR
Excess Calcium can cause the heart to be _____. correct answerspastic contractions.
Although about 70% of ventricular filling occurs passively, ______ ______ contributes an additional 10%
to 30% of blood flow to ventricular filling. correct answeratrial kick
The area in the middle of the thoracic cavity in which the heart lies is the: correct answerMediastinum
The inferior surface of the heart is formed by the correct answerRight and left ventricles
Receives blood from the superior and inferior vena cavae and the coronary sinus correct answerThe
right atrium
The right ventricle correct answerPumps unoxygenated blood into the pulmonary circulation
The _____ pericardium is the inner layer of the pericardium, which is also the outer layer of the heart
wall called the _____. correct answerVisceral, epicardium
When a ventricle relaxes in the normal heart, blood is prevented from flowing back into it by correct
answerA semilunar valve
Which of the following conditions are potentially reversible? correct answerMyocardial ischemia and
myocardial injury
Which of the following is the innermost layer of the heart that lines its inner chambers, valves and is
continuous with the innermost layers of the arteries, veins and capillaries of the body? correct
answerEndocardium
Which of the following statements is CORRECT correct answerA branch of the right coronary artery
supplies the right atrium and the right ventricle
