You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is 75% respiration is due to: and explain in detail?
Ans. A DiaphragmRef: Snell Anatomy, 7h ed. pg 499; BDC 6th ed. vol. I pg. 212-13* Diaphragm is major respiratory muscle* Inspiration is an active process and requires contraction of inspiratory muscles.* During quiet breathing expiration is a passive process.* During inspiration all the 3 dimensions of the thoracic cavity expand# Vertical-75% (by diaphragm)# AP 25% (external intercostals and internal intercostals)# Transverse# Increase in vertical diameter is brought about by downward movement of diaphragm--which account for 70% of the thoracic expansion.