Start learning →

For inspiration to occur, intra-pulmonary pressure must be:

AEqual to atmospheric pressure
BTwice atmospheric pressure
CHigher than atmospheric pressure
DLower than atmospheric pressure
Answer & Solution
Correct answer: D. Lower than atmospheric pressure
Air flows into the lungs only when the pressure inside them falls below the pressure of the outside air.
Practise this question with Quill — NEET UG →

Keep practising Breathing and Exchange of Gases

Browse all Breathing and Exchange of Gases questions for NEET UG, or explore more Biology topics.

Start a Breathing and Exchange of Gases lesson →
Related questions
Air at 33.7 kPa total pressure is 21% oxygen. What is its pO2?The high-affinity form of haemoglobin after the first O2 binds is the:Roughly how many times more readily does haemoglobin bind CO than O2?Compared with the adult curve, the fetal oxygen dissociation curve is:Fetal haemoglobin (HbF) is made of which globin chains?In which process is 2,3-BPG formed inside red blood cells?A rise in body temperature shifts the oxygen dissociation curve:Falling blood pH lowering haemoglobin's oxygen affinity is called the: