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The Pathway of Blood Through the Heart

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Summarizes how a single drop of blood around the pulmonary and systemic circuits passes through the four chambers of the heart (the right atrium, the right ventricle, the left atrium, and the left ventricle) and is delivered throughout the body tissues. It is important to understand that both atria contract at the same time and both ventricles contract at the same time. Therefore, the heart works as two pumps, with the right and the left side working in a synchronized manner.

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Oxygen-poor systemic blood (also known as deoxygenated blood) enters the right side of the heart through the superior and inferior vena cava. This blood passes from the right atrium through the tricuspid valve to the right ventricle, (this is aided by the contraction of the right atrium). Then, the right ventricle propels blood through the pulmonary semilunar valve into the pulmonary trunk and around the pulmonary circuit for ...

Solution Summary

This solution describes the path of a single drop of blood through the chambers of the heart. It also contains a flowchart of the pathway of blood through the heart.

See Also This Related BrainMass Solution

Functions of the heart and lungs are featured in this solution, as well as the detrimental effects of smoking on the homeostasis physiology of these two systems. Specific diseases, such as hypertension and emphysema are also discussed.

Address the following:

Starting with the right ventricle of the heart, describe the function of the heart and the movement of the blood through the pulmonary and systemic circuit. Include a description of gas exchange within the lungs.
Now consider what happens if Jake starts smoking. Discuss in detail how this will affect the heart and lungs. Think about how this habit might affect the homeostasis of the cardiovascular and respiratory system.
After many years of smoking, during a routine doctor's appointment, Jake is diagnosed with high blood pressure and early signs of emphysema. Explain the connection between his smoking habit and the diagnoses.
Also explain why the doctor wants to run more tests to look at Jake's coronary circuit.

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