What happens when the pressure within the pulmonary cavity is more than the atmospheric air ?

What happens when the pressure within the pulmonary cavity is more than the atmospheric pressure ?

What happens when pressure within the pulmonary cavity is higher than the atmospheric pressure?

Following processes will occur if pressure within the pulmonary cavity is lower than the atmospheric pressure?

Read the following statement (A - D). (A) The movement of air into and out of the lungs is carried out by creating a pressure gradient between the lungs and atmosphere. (B) Inspiration can occur if the pressure within the lungs is more than the atmospheric pressure. (C) Expiration takes place when the intrapulmonary pressure is lesser than the atmospheric pressure. (D) The diaphragm and a specialized set of intercostal muscles in between the ribs help in the generation of such pressure gradients for breathing. How many of the following statements are correct?

Alveolar air has more/less oxygen than atmospheric air.

(b) What is the air pressure within the lungs of man?

What happens when glucose is treated within: NaBH_4

What happened when the intrapulmonary pressure is less than atmospheric pressure ?