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Question: Answered & Verified by Expert
Which one of the following is incorrect statement?
BiologyBreathing and Exchange of GasesNEET
Options:
  • A The site of actual diffusion of gases between blood and atmospheric air is called exchange part of lungs.
  • B Inspiration is initiated by the contraction of diaphragm and internal inter-costal muscles.
  • C A healthy man inspire or expire approximately 6000 to 8000 ml of air per minute.
  • D About 97 percent oxygen is transported by RBC in the blood.
Solution:
2011 Upvotes Verified Answer
The correct answer is: Inspiration is initiated by the contraction of diaphragm and internal inter-costal muscles.
Inspiration is initiated by the contraction of diaphragm and external inter-costal muscles. Due to this the diaphragm flattened to increase volume of thoracic chamber anterio-posterior and ribs pulled outward to increase thoracic volume dorso-ventrally.

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