<prompt> A man connected to a body plethysmograph for estimation of FRC inspires against a closed glottis. Which of the following statements is trueThe pressure in both the lungs and the box increasesThe pressure in both the lungs and the box decreasesThe pressure in the lungs decreases, but that in the box increasesThe pressure in the lungs increases, but that in the box decreases  <response>: During Plethysmography, the following are the changes.- Lungso During Expiration- Volume decreases, pressure increaseso During inspiration- Volume increases, pressure decreases- Chambero During expiration- Volume increases, pressure decreaseso During inspiration- Volume decreases, pressure increases 