Which of the following has the thickest wall?

Options

A. right ventricle
B. left ventricle
C. right auricle
D. left auricle

Explanation

To determine which of the following has the thickest wall, we need to analyze the structure of the heart and its chambers. The heart consists of four chambers: the right atrium, left atrium, right ventricle, and left ventricle.

1. **Identify the Chambers of the Heart**:
- The heart has four chambers: Right Atrium, Left Atrium, Right Ventricle, and Left Ventricle.

2. **Function of the Chambers**:
- The atria (right and left) are responsible for receiving blood. The right atrium receives deoxygenated blood from the body, while the left atrium receives oxygenated blood from the lungs.
- The ventricles (right and left) are responsible for pumping blood out of the heart. The right ventricle pumps deoxygenated blood to the lungs via the pulmonary artery, while the left ventricle pumps oxygenated blood to the rest of the body through the aorta.

3. **Comparison of Wall Thickness**:
- The ventricles have thicker walls compared to the atria because they need to generate more force to pump blood out of the heart.
- Among the ventricles, the left ventricle has a thicker wall than the right ventricle. This is because the left ventricle needs to pump blood into the aorta, which requires a higher pressure to send blood throughout the entire body.

4. **Conclusion**:
- Therefore, the chamber with the thickest wall is the **Left Ventricle**.