1-5
Crossed lead wires or lead wires that do not follow the contours of the patient's body can cause ________ _____________
AC interference
An arteriole is an example of what type of artery?
Resistance
Which blood vessel carries blood away from the heart?
Artery
Which precordial electrode is located by counting to the fourth intercostal space to the right of the sternum?
V1
Blood enters into what structure when it returns to the heart from the lungs?
left atrium
Blood pressure and flow can be regulated locally: _________
__________
__________.
by the tissues, hormonally , or neurally
The pathway of blood through the heart is as follows:
Blood leaves the right atrium and passes through what valve to get to the right ventricle to the tricuspid valve.
The combining form _____________ means atrium
atri/o
The arrhythmia in which P waves cannot be identified because of rapid multiple electrical signals that fire from areas of the atria other than the SA node is ____.
AF = atrial fibrillation
the following is not a mechanism that aids in the venous return of blood to the heart?
Smooth muscle pump
A ______________can be the result of a loose or detached wire
flat line
the following is an erroneous mark or defect that may appear on an ECG strip?
Artifact
In ___________________________, multiple electrical signals fire rapidly from different areas of the atria, rather than from the SA node.
atrial fibrillation (AF)
The ________ complex is the contraction (following depolarization) of the ventricles
QRS
Microscopic _______________ are the smallest of all of the vessels.
capillaries
What structure fans out from the end of the AV bundle to the wall of the ventricles?
Purkinje fibers
Place the ____ _________ in the fifth intercostal space, where it intersects an imaginary line drawn straight down from the midclavicular line.
V4 electrode
the following is a semilunar valve within the heart?
Aortic valve
VF is refer as to: _______________.
Ventricular fibrillation is a life-threatening condition.
What is the correct sequence of vessels that blood travels as it leaves the heart?
Aorta - arteries – arterioles – capillaries - venules – veins – vena cavae
What are the two inferior chambers of the heart?
Ventricles
If a lead does not appear on an ECG tracing, or you see a "flat line," it is usually because of a_____________ or __________.
loose or disconnected wire.
Which wave on the ECG shows the repolarization of the ventricles?
T wave
______ _____________ is the difference between the cardiac output of a heart at rest and the maximum cardiac output the heart can achieve
Cardiac reserve
The process by which a graphic pattern is generated from the electrical impulses generated within the heart as it pumps is called ________________________..
electrocardiography