Cardiology I – A Review of Cardiovascular Anatomy and Physiology
by Cwanza A. Pinckney, M.D.
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Table of Contents
- Course Home
- Objectives
- Matching Exercise
- Introduction
- Anatomy: The Heart
- Anatomy: The Vessels
- Physiology: Introduction
- Physiology: Review of Circulation
- Physiology: The Cardiac Cycle
- Physiology: Innervation of the Heart
- Cardiac Electrophysiology: Introduction
- Cardiac Electrophysiology: Electrolytes
- Cardiac Electrophysiology: The Cardiac Conduction System
- Sample Cases
- Case 1: Cardiac Tamponade
- Figure 1: Assessment
- Figure 2: Management
- Case 2: Cocaine Overdose
- Figure 3: Assessment
- Figure 4: Management
- Case 3: Hemorrhagic Shock
- Figure 5: Assessment
- Figure 6: Management
- Conclusion
- References
- Bibliography
Physiology: The Cardiac Cycle
The cardiac cycle is defined as the events that occur between one heart contraction and the next. This cycle is divided into two phases – relaxation and contraction. The relaxation phase of the cardiac cycle is known as diastole and is characterized by filling of the ventricles. The second part of the cardiac cycle is known as systole. During systole, the heart contracts and forces blood into the aorta and pulmonary artery.