EKG CERTIFICATION TEST
EXAM WITH CORRECT
ANSWERS 2025
The use of non-invasive and painless ultrasound to examine the heart, its
chambers and valves is known as: ( correct answers ) Echocardiology
Waveforms may be displayed on a screen called an: ( correct
answers ) Electrocardiogram
The breastbone is referred to as: ( correct
answers ) sternum
The pericardial sac that surrounds the heart: ( correct answers ) Has a
tough fibrous outer layer called the visceral pericardium and an inner, thin
transparent lining called the fibrous pericardium
What are the 3 layers of the heart wall? ( correct answers ) Epicardium,
myocardium, endocardium
The atrioventricular valve between the left atrium and the left ventricle is
the:
( correct answers ) Mitral valve
The wall that separates the two superior chambers of the heart is called:
( correct answers ) Interatrial septum
The heart valves that separates the atria from the ventricles are called
that:
( correct answers ) Atrioventricular valves
The skeleton of the heart: ( correct answers )
Separates the atria from the ventricles
The heart receives most of its own blood supply via the: ( correct
answers ) Coronary arteries
Regulation of the heart rate, speed of electrical conduction and strength of
contraction are influenced by the brain via the nervous system.
( correct answers ) Central
The cardioaccelerator center: ( correct answers ) Is part of
the sympathetic nervous system
The most muscular chamber of the heart that forces blood through the
aortic valve into the aorta would be the: ( correct answers ) Left ventricle
, During depolarization: ( correct answers ) Impulses are generated and
transmitted when positively charged ions move inside the cell causing the
interior to become positively charged
Blood returns to the heart from the lungs via four blood vessels called:
( correct answers ) Pulmonary veins
Blood travels to the lungs where carbon dioxide is unloaded and oxygen is
loaded. The blood vessels that carry the blood from the heart to the lungs
are: ( correct answers ) Pulmonary arteries
During which phase of the cardiac cycle do the coronary arteries fill?
( correct answers ) Early systole
How much of the blood coming into the ventricles flows passively through
the atria? ( correct answers )
80%
With EKG paper: ( correct answers ) Five small squares, which make up
a larger box, represent 0.20 seconds in duration
On EKG paper horizontal measurements are used to determine the:
( correct answers
) The heart rate
What is placed on the patient's skin to detect the heart's electrical
activity?
( correct answers ) Electrodes
Each small square running horizontally represents: ( correct
answers ) .04 seconds
The initiation of the impulse in the SA node and its movement
through the atria produces a: ( correct answers ) P wave
The T wave: ( correct answers ) Has a peak which is closer to the end
than the beginning
What is used as a reference point to identify the changing electrical
amplitude? ( correct answers )
Isoelectric line
A calibration mark is: ( correct answers ) 10mm tall
(2 squares high)
An electrical current traveling toward a positive electrode produces a
waveform that: ( correct answers )
Points upward
To view the limb leads, we place electrodes on the: ( correct answers )
Right arm (RA), left arm (LA), left leg (LL)
With lead 2, the positive electrode is positioned on the:
EXAM WITH CORRECT
ANSWERS 2025
The use of non-invasive and painless ultrasound to examine the heart, its
chambers and valves is known as: ( correct answers ) Echocardiology
Waveforms may be displayed on a screen called an: ( correct
answers ) Electrocardiogram
The breastbone is referred to as: ( correct
answers ) sternum
The pericardial sac that surrounds the heart: ( correct answers ) Has a
tough fibrous outer layer called the visceral pericardium and an inner, thin
transparent lining called the fibrous pericardium
What are the 3 layers of the heart wall? ( correct answers ) Epicardium,
myocardium, endocardium
The atrioventricular valve between the left atrium and the left ventricle is
the:
( correct answers ) Mitral valve
The wall that separates the two superior chambers of the heart is called:
( correct answers ) Interatrial septum
The heart valves that separates the atria from the ventricles are called
that:
( correct answers ) Atrioventricular valves
The skeleton of the heart: ( correct answers )
Separates the atria from the ventricles
The heart receives most of its own blood supply via the: ( correct
answers ) Coronary arteries
Regulation of the heart rate, speed of electrical conduction and strength of
contraction are influenced by the brain via the nervous system.
( correct answers ) Central
The cardioaccelerator center: ( correct answers ) Is part of
the sympathetic nervous system
The most muscular chamber of the heart that forces blood through the
aortic valve into the aorta would be the: ( correct answers ) Left ventricle
, During depolarization: ( correct answers ) Impulses are generated and
transmitted when positively charged ions move inside the cell causing the
interior to become positively charged
Blood returns to the heart from the lungs via four blood vessels called:
( correct answers ) Pulmonary veins
Blood travels to the lungs where carbon dioxide is unloaded and oxygen is
loaded. The blood vessels that carry the blood from the heart to the lungs
are: ( correct answers ) Pulmonary arteries
During which phase of the cardiac cycle do the coronary arteries fill?
( correct answers ) Early systole
How much of the blood coming into the ventricles flows passively through
the atria? ( correct answers )
80%
With EKG paper: ( correct answers ) Five small squares, which make up
a larger box, represent 0.20 seconds in duration
On EKG paper horizontal measurements are used to determine the:
( correct answers
) The heart rate
What is placed on the patient's skin to detect the heart's electrical
activity?
( correct answers ) Electrodes
Each small square running horizontally represents: ( correct
answers ) .04 seconds
The initiation of the impulse in the SA node and its movement
through the atria produces a: ( correct answers ) P wave
The T wave: ( correct answers ) Has a peak which is closer to the end
than the beginning
What is used as a reference point to identify the changing electrical
amplitude? ( correct answers )
Isoelectric line
A calibration mark is: ( correct answers ) 10mm tall
(2 squares high)
An electrical current traveling toward a positive electrode produces a
waveform that: ( correct answers )
Points upward
To view the limb leads, we place electrodes on the: ( correct answers )
Right arm (RA), left arm (LA), left leg (LL)
With lead 2, the positive electrode is positioned on the:
