Question

Whether a child died after normal birth or died before birth can be confirmed measuring

• A. The weight of the child
• B. The dead space air
• C. Tidal volume of air
• D. Residual volume of air

Answer 1

The correct option is D Residual volume of air

Whether a child died before birth or after normal birth is confirmed by measuring his residual volume of air. Soon after the birth of a child, the first cry of child opens its respiratory passage due to which certain amount of air gets stored in his lungs. This volume of air is known as residual volume. After the death of child, his lungs are cut and put in water, if they float it ensures that it died after normal birth. Due to buoyancy the floating of the lungs in water happens as they have air filled in it. If the lungs sink in water due to the lack of air in it, indicates that the child died before birth.

Thus, the correct answer is option D.