MEDCA EKG Study Guide Questions and Answers All Correct
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Course
MEDCA EKG
Institution
MEDCA EKG
MEDCA EKG Study Guide Questions and Answers All Correct
What is the body's largest vein? - Answer-Vena cava
What is often called the heart's natural pacemaker? - Answer-Sinoatrial node
A myocardial infarction is also called what? - Answer-A heart attack
A local and temporary decrease in...
MEDCA EKG Study Guide
Questions and Answers All
Correct
What is the body's largest vein? - Answer-Vena cava
What is often called the heart's natural pacemaker? - Answer-Sinoatrial node
A myocardial infarction is also called what? - Answer-A heart attack
A local and temporary decrease in the blood supply to an area of tissue is known as
what? - Answer-ischemia
What means to change into a solid or semisolid state (formatting clotting)? - Answer-
Coagulate
The major vein that carries oxygenated blood from the lungs to the left atrium is called
the _______________________. - Answer-pulmonary vein
The arteries that branch off from the aorta and feed oxygen-rich blood to the heart
muscle are the ___________________________. - Answer-Coronary artery
True or False; Patient psychology can be more important in obtaining a diagnostically
pure EKG than the mechanics of administering the EKG. - Answer-True
True or False; EKG can be used to evaluate the function of the artificial pacemakers. -
Answer-True
The muscular wall that separates the left and right sides of the heart is the
____________________. - Answer-Septum
______________ regulate the flow of blood into and out the proper chambers. -
Answer-Valves
______________ is the color code for the lead wire to the right leg. - Answer-Green
The blood exchanges carbon dioxide for oxygen in the _______________. - Answer-
Lungs
, ATP is a substance that causes the muscle of the heart to
__________________________________. - Answer-contract momentarily
True or False; The electrocardiograph can be used to determine blood pressure. -
Answer-False
The time normally required for one cardiac impulse and recharging of cells is
____________________. - Answer-0.5 seconds
True or False; The EKG records the actual image of the heart. - Answer-False
The right leg electrode is called the ground, __________________ electrode. - Answer-
reference
The three limb leads that form a triangle are called what? - Answer-Einthoven's triangle
Lead 1,2,3 are electrically ________ from the heart electrical activity - Answer-
equidistant
The negative pole is always on the ___________________. - Answer-right leg
The _______________ electrode is positive in lead 1 and negative in lead 3. - Answer-
left arm
The average hearts beats how many times everyday? - Answer-100,000
The average heart pumps how many times everyday? - Answer-2,000
The human heart weighs approximately how much? - Answer-11 ounces
The human heart is about the size of what? - Answer-a clenched fist
The heart is made up of specialized muscle tissue called what? - Answer-Myocardium
The heart is divided into how many separate chambers? - Answer-4
The right and left what make up the top portion of the heart? - Answer-atrium
The right and left atria are the __________ chambers of the heart. - Answer-receiving
The right and left ventricles are the heart's ____________ chambers. - Answer-pumping
The heart has how many valves? - Answer-4
Name the heart valves - Answer-1. Tricuspid
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