Medca EKG Practice Questions and
Answers
A device on the skin that picks up electrical impulses given off by the heart is known as
- Answer -electrode
The heart is located - Answer -on the left side of the chest
The body returns oxygen-poor blood to the heart via the - Answer -vena cavae
In lead l, activity of the heart is being measured from - Answer -the right arm to the left
arm
The human heart weighs approximately - Answer -11 ounces
What position should the patient be in for an ECG - Answer -supine
Where is the chest electrode V2 located - Answer -at the fourth intercostal space at the
left margin of the sternum
Lead l, ll, lll are called - Answer -standard leads
The right and left atrium are the __________chambers - Answer -receiving
The atria contains what kind of blood - Answer -both oxygenated and deoxygenated
blood
The __________ valve separates the left ventricle from the aorta - Answer -aortic
The __________ regulate the flow of blood into and out of the proper chambers -
Answer -valves
Which electrode is used as a ground reference - Answer -right leg
The standard ECG consists of how many leads - Answer -12
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