Electrical
What is the function of the SA node?
Initiates the heartbeat
How many chambers are in the heart?
4
The heart has how many valves?
4
The P Wave on an ECG represents?
atrial depolarization
The AV node is located in which part of the heart?
Which chamber of the heart receives oxygenated blood from the lungs?
The left atrium
Blood flows from the left atrium into the left ventricle through the?
Mitral valve
The QRS complex represents
Ventricular Depolarization
What's the main role of the bundle of his?
To transmit impulses to the bundle branches
Which blood vessels supply oxygenated blood to the myocardium?
Coronary Arteries
The structure that prevents backflow of blood into the left atrium is?
Mitral valve
What is dextrocardia?
The heart is on the right side instead of the left
The AV node delays conduction to allow?
What vessel(s) brings the blood from the body to the heart?
The superior and inferior vena cava
What layer of the heart is reponsible for contraction?
The Myocardium
The normal heart rate for an adult is?
60-100 bpm
The Purkinje fibers are responsible for?
Conducting impulses to ventricular myocardium
What vessel(s) bring blood from the heart to the body?
The aorta
The heart is enclosed in a protective sac called the?
The Pericardium
What's an infant's normal heart rate?
100-140 bpm