alleryWhich muscles contract to lift the ribs and sternum during normal inspiration?
AExternal intercostals
BInternal intercostals
CAbdominal muscles
DPectoral muscles
Answer & Solution
Correct answer: A. External intercostals
The external intercostal muscles pull the ribs and sternum upward when they contract in inspiration.
Keep practising Breathing and Exchange of Gases
Browse all Breathing and Exchange of Gases questions for NEET UG, or explore more Biology topics.
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: