Chapter 2 Flashcards
What is recorded on the ECG strip?
Each electrical activity of the heart.
What is circulation?
The process of transporting blood to and from the body tissues.
What is the name of the middle layer of the heart?
Myocardium
Which valve is located between the left atrium and left ventricle?
Bicuspid Valve or mitral
What are the first vessels to branch off the aorta know as?
Coronary arteries
Describe the three types of circulation.
Coronary, pulmonary, systematic
What is cardiac output?
Volume of blood pumped each minute
What is cardiac cycle?
The contraction and relaxation of the heart together
How are diastole and systole the same?
The cardiac cycle
List the parts of the conduction system in the order the electrical impulse travels.
Sinoatrial (SA) node to the atrioventricular (AV) node to AV bundle to interventricular to Purnkinije
The ability of the heart muscle cell to respond to a stimulus is called
Excitability
Where does the electrical impulse get delayed to allow all the blood to leave the atria before the ventricles contract?
AV node
Which electrical event is represented by the cardiac contraction of the heart?
Depolarization
Which wave represents the atrial depolarization? Ventricular repolarization?
P wave.
QRS complex
What is ischemia?
Lack of blood causing reduced oxygen
