Blood Flow
The blood enters into what chamber from the body?
Right Atrium
The heart is about the size of......
your fist
How many small squares are in a large square?
5
What is a normal HR for an average adult?
60-100
How does the heart receive blood to its muscles?
Coronary Arteries
The blood in the left atrium is what type of blood?
What is the name of the muscle that divides the left and right Ventricles?
Septum
A large square represents how many seconds?
0.20 seconds
What makes the ventricles contract?
Purkinje Fibers
What is asystole?
a flat line on EKG, no heart rate
Where does gas exchange happen in the body?
Capillaries
What is the name of the pointy part of the heart?
Apex
When does standardization occur?
Before and after EKG
P wave represents What?
The SA node firing, and the atriums starting to contract.
When does a U wave occur?
when the body is low on potassium
If the blood is coming from the right arm how does it enter the body?
Superior Vena Cava
What are Atrioventricular (AV) valves?
Tricuspid, and Bicuspid
How many large squares are in 3 seconds?
15
With Bradycardia of 40-60 beats per minutes, the SA node may not be functioning. The impulse is most likely being generated by the
AV node
What is an electrocardiogram?
a recording or tracing of an EKG
What is the last chamber before leaving the heart and going to the body?
Left Ventricle
What valves are attached to major arteries?
Aortic Valve, and Pulmonary Valve
How do you calculate a HR when it is irregular on EKG?
Count QRS complexes and multiply by 10
What generates the impulse for a normal sinus rhythm of 60- 80 beats per minute?
SA node
The X axis represents.....
The y axis represents....
Y-voltage