CRAT
CRAT EXAM QUESTIONS AND ANSWERS UPDATED (2026/
2027) (VERIFIED ANSWERS)
The inferior surface of the heart is formed by the - ANS ✓Right and left
ventricles
Receives blood from the superior and inferior vena cavae and the coronary
sinus - ANS ✓The right atrium
The right ventricle - ANS ✓Pumps 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 _____. - ANS ✓Visceral, epicardium
When a ventricle relaxes in the normal heart, blood is prevented from
flowing back into it by - ANS ✓A semilunar valve
Which of the following conditions are potentially reversible? - ANS
✓Myocardial ischemia and myocardial injury
1
CRAT Exam
, CRAT
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? - ANS ✓Endocardium
Which of the following statements is CORRECT - ANS ✓A branch of the right
coronary artery supplies the right atrium and the right ventricle
The main electrolytes that affect cardiac function are - ANS ✓Sodium,
potassium, chloride, calcium
When an ECG machine is properly calibrated, a 1-millivolt (mV) electrical
signal will produce a deflection measuring exactly ______ tall. - ANS ✓Ten
millimetres
The ST segment is measured from - ANS ✓The end of the QRS to the beginning
of the T wave
Where is the positive electrode placed in Lead III? - ANS ✓Left leg/foot
Five large boxes, each consisting of five small boxes, represent _____ on ECG
paper. - ANS ✓One second
Another term for ventricular escape rhythm - ANS ✓Idioventricular Rhythm
(IVR)
2
CRAT Exam
CRAT EXAM QUESTIONS AND ANSWERS UPDATED (2026/
2027) (VERIFIED ANSWERS)
The inferior surface of the heart is formed by the - ANS ✓Right and left
ventricles
Receives blood from the superior and inferior vena cavae and the coronary
sinus - ANS ✓The right atrium
The right ventricle - ANS ✓Pumps 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 _____. - ANS ✓Visceral, epicardium
When a ventricle relaxes in the normal heart, blood is prevented from
flowing back into it by - ANS ✓A semilunar valve
Which of the following conditions are potentially reversible? - ANS
✓Myocardial ischemia and myocardial injury
1
CRAT Exam
, CRAT
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? - ANS ✓Endocardium
Which of the following statements is CORRECT - ANS ✓A branch of the right
coronary artery supplies the right atrium and the right ventricle
The main electrolytes that affect cardiac function are - ANS ✓Sodium,
potassium, chloride, calcium
When an ECG machine is properly calibrated, a 1-millivolt (mV) electrical
signal will produce a deflection measuring exactly ______ tall. - ANS ✓Ten
millimetres
The ST segment is measured from - ANS ✓The end of the QRS to the beginning
of the T wave
Where is the positive electrode placed in Lead III? - ANS ✓Left leg/foot
Five large boxes, each consisting of five small boxes, represent _____ on ECG
paper. - ANS ✓One second
Another term for ventricular escape rhythm - ANS ✓Idioventricular Rhythm
(IVR)
2
CRAT Exam
