Which is the correct sequence of blood flow in the Pulmonary and Systemic Circulation?
Show Hint
- Right Atrium → Right Ventricle → Lungs → Left Atrium → Left Ventricle → Body tissues
- Left Ventricle → Left Atrium → Body tissues → Right Atrium → Right Ventricle → Lungs
- Left Ventricle → Left Atrium → Lungs → Right Ventricle → Right Atrium → Body tissues
- Right Atrium → Right Ventricle → Body tissues → Left Atrium → Left Ventricle → Lungs
The Correct Option is A
Solution and Explanation
Step 1: Understanding the blood circulation system.
The circulatory system is divided into two main circuits: the pulmonary circulation and systemic circulation. The pulmonary circulation carries deoxygenated blood from the heart to the lungs, where it gets oxygenated. The systemic circulation carries oxygenated blood from the heart to the body tissues.
Step 2: Blood flow through the heart and body.
The correct sequence of blood flow is as follows: 1. Deoxygenated blood enters the Right Atrium from the body tissues. 2. It passes through the Right Ventricle. 3. From the Right Ventricle, the blood is pumped to the Lungs via the pulmonary artery, where it gets oxygenated. 4. The oxygenated blood returns to the Left Atrium via the pulmonary veins. 5. Blood moves into the Left Ventricle, which then pumps oxygenated blood to the body tissues through the aorta.
Step 3: Analyzing the options.
- (A) Right Atrium → Right Ventricle → Lungs → Left Atrium → Left Ventricle → Body tissues: Correct. This is the accurate sequence of blood flow through the heart and circulatory system.
- (B) Left Ventricle → Left Atrium → Body tissues → Right Atrium → Right Ventricle → Lungs: Incorrect. The blood does not go from the Left Ventricle to the Left Atrium before going to the body tissues.
- (C) Left Ventricle → Left Atrium → Lungs → Right Ventricle → Right Atrium → Body tissues: Incorrect. This is not the correct sequence, as blood does not flow from the Left Atrium to the Lungs.
- (D) Right Atrium → Right Ventricle → Body tissues → Left Atrium → Left Ventricle → Lungs: Incorrect. Blood from the Right Ventricle does not go directly to the body tissues; it first goes to the lungs.
Step 4: Conclusion.
The correct sequence of blood flow is given by option (A). Final Answer: Right Atrium → Right Ventricle → Lungs → Left Atrium → Left Ventricle → Body tissues.
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