ECG Flashcards
Name the great Vessels.
(5)
- Aorta
- Pulmonary Arteries
- Pulmonary Veins
- Pulmonary Trunk
- Vena Cava (Superior and Inferior)
Where does the “lub” sound come from?
S1 sound
Atrioventricular Valves
(Tricuspid and Bicuspid valves)
Where is the S2 sound from and what does it sound like?
Semilunar Valves. - “dub”
(Pulmonary and Aortic valves)
Baroreceptors are…
nerve tissues with specialized sensors
What are the characteristics of Pacemaker Cells?
- automaticity
- excitability
- conductivity
What do Pacemaker Cells do?
~ —Generate impulse—
~ Control the rate & rhythm
~ Do NOT have the ability to contract
Myocardial Cells can…
~ —Cause actual contractions—
~ Found in myocardium
~ Contain contractile filaments
~ conduct electrical impulses
Characteristics of a Myocardial Cell are…
- contractility
- excitability
- conductivity
What is the onset of atrial depolarization to the beginning of ventricular depolarization called?
PR Interval
Ventricular depolarization is which complex?
QRS Complex
What segment is represented by a flat line ?
(isoelectric line)
ST Segment
Ventricular repolarization is shown on an ECG as what wave?
T Wave
What is a product from an outside source on an ECG, such as movement called?
Artifact
Cardiac Cycle consists of 2 cycles. Name them and how long do they last?
Dystole - about 0.52 seconds
Systole - about 0.28 secondsEjection Fraction Measures what?
Ejection Fraction Measures what?
The amount of blood pumped out of the left ventricle during the cardiac cycle.
What is the amount of blood pumped out of one of the ventricles during the cardiac cycle called?
Stroke Volume
(refers to PER CYCLE)