Explain why the wall of the left ventricle is thicker than the wall of the right ventricle.

The wall of the left ventricle is thicker than the wall of the right ventricle due to the different roles they play in the circulatory system.

1. The right ventricle only needs to pump blood to the lungs, which is a short distance. Therefore, it doesn't require as much force and the muscle wall is thinner.

2. On the other hand, the left ventricle needs to pump blood to the rest of the body, which is a much longer distance. This requires a lot more force, hence the muscle wall is thicker.

3. The thickness of the left ventricle also allows it to generate higher blood pressure, which is necessary to deliver oxygen and nutrients to all the tissues in the body.

4. Additionally, the left ventricle works against greater resistance to pump blood into the systemic circulation. To overcome this resistance, it needs to be stronger and therefore has a thicker wall.

5. Lastly, the thicker wall of the left ventricle also helps to prevent oxygenated and deoxygenated blood from mixing, which would reduce the efficiency of oxygen delivery to the body.