Respired lung weight as compared to body weight is:-
**Core Concept**
The question is testing the understanding of the pulmonary function and the ratio of lung weight to body weight, which is an important parameter in assessing the health and function of the lungs.
**Why the Correct Answer is Right**
The correct answer is around 0.5-0.7% of the body weight, which is a normal value. This is because the lungs are a relatively small organ compared to the entire body. The lung weight is determined by the amount of air they can hold, the surface area of the alveoli, and the volume of the lung tissue. A normal lung weight to body weight ratio is essential for proper gas exchange, oxygenation, and carbon dioxide removal.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is lower than the normal range. A lung weight to body weight ratio of less than 0.5% is considered abnormal and may indicate lung disease or atrophy.
**Option B:** This option is incorrect because it is higher than the normal range. A lung weight to body weight ratio of more than 1% is considered abnormal and may indicate lung hyperinflation or emphysema.
**Option C:** This option is incorrect because it is not a valid range. The lung weight to body weight ratio is a specific value, not a range.
**Clinical Pearl / High-Yield Fact**
Remember that a significant change in lung weight to body weight ratio can be an indicator of lung disease, and it is essential to consider other clinical and radiological findings to diagnose and manage lung conditions.
**Correct Answer: B. 1%**