✔️ Right atrium → tricuspid valve → right ventricle → pulmonary artery → lungs → pulmonary vein →
left atrium → mitral valve → left ventricle → aorta.
- Right Atrium Receives Blood From:
1. ✔️ Superior Vena Cava - above the heart
2. ✔️ Inferior Vena Cava - below the heart
3. ✔️ Coronary Sinus - blood from the veins of the heart muscle
- Diastolic Pressure: ✔️ The pressure in the arteries when the heart is at rest.
- Systolic Pressure: ✔️ The pressure generated in the arteries when the heart contracts.
- Bradycardia: ✔️ Below 60 beats per minute (bpm).
- Tachycardia: ✔️ Greater than 100 beats per minute (bpm).
Electrical Conduction System of the Heart
- SA Node (Sinoatrial Node): ✔️ Located in the right atrium; acts as the heart's pacemaker. Impulses
from this node result in sinus rhythms.
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