- Starting with the superior and inferior vena cava and ending with the aorta, list the parts of the heart below in the order that blood flows through them:
- Superior and Inferior Vena Cavae
- Pulmonary Vein
- Pulmonary Artery
- Pulmonary Capillaries
- Left Atrium
- Right Atrium
- Tricuspid Valve
- Mitral Valve
- Pulmonary Valve
- Aortic Valve
- Aorta
- Left Ventricle
- Right Ventricle
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- The SA node is known as the primary pacemaker of the heart, whereas the AV node is known as the secondary pacemaker. Explain the two different roles of these nodes in electrical conduction through the heart?
- Why is the T wave (repolarization) in the same positive ECG displacement direction as the other waves (depolarization)?
- You observe an ECG signal that resembles a smooth sine wave with a heart rate of about 300 bpm. Which cardiac dysrhythmia does this patient most likely have?
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