A man connected to a body plethysmograph exhales against a closed glottis. What will be the finding?

The pressure in the lungs increases, but that in the box decreases

The pressure in both the lungs and the box increases

The pressure in both the lungs and the box decreases

The pressure in the lungs decreases, but that in the box increases

A man connected to a body plethysmograph exhales against a closed glot

1.	A man connected to a body plethysmograph exhales against a closed glottis. What will be the finding?
A.	The pressure in both the lungs and the box increases
B.	The pressure in both the lungs and the box decreases
C.	The pressure in the lungs decreases, but that in the box increases
D.	The pressure in the lungs increases, but that in the box decreases
Answer» D. The pressure in the lungs increases, but that in the box decreases