BT_PO 1.10 Describe the Work of Breathing

For the remainder of this week we might have some fun with Respiratory Physiology. Unless we don’t. 

Respiratory Physiology is one area of the PEX curriculum which is mercifully covered in one relatively succinct, finite text – ie. West’s Respiratory Physiology – The Essentials. That said, you’ll pretty much need to know the book verbatim to get to the required level. Which brings me on to the subject of Nunn’s Applied Respiratory Physiology. Do not – please, I beg you – attempt to read this book from cover to cover. Unless you’re going for the Renton Prize. And even then, don’t. That said, there are a few key topics that aren’t well covered in West that you need to refer to Nunn for – such as venous admixture, non respiratory functions of the lung, and altitude/diving physiology.

Q. Work of breathing is a flow/volume relationship TRUE/FALSE

Q. The two main sources of impedance come from elastin and surface tension TRUE/FALSE

Q. Elastic work is greatest at a slow resp. frequency TRUE/FALSE

Q. Resistance work is greatest at a high resp frequency TRUE/FALSE

Q. Most energy consumed is dissipated as heat TRUE/FALSE


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