Maintaining a healthy weight allows the respiratory system to work more effectively because

Question

1. oxygen is being delivered more adequately.
2. the heart does not have to pump as forcefully.
3. the capillaries are constricted.
4. the lung capacity allows for small amounts of air.

Answer 1

Maintaining a healthy weight allows the respiratory system to work more effectively primarily because:

2. the heart does not have to pump as forcefully.

When a person is at a healthy weight, the body does not have to work as hard to circulate blood, which can lead to better oxygen delivery and more efficient respiratory function. The other options provided do not accurately capture the relationship between weight and the effectiveness of the respiratory system.