呼吸生理與呼吸力學(xué)(編輯修改稿)
2025-10-06 23:35 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 with permission by Lippincott Williams Wilkins第三十四 頁(yè) ，共八十 頁(yè) 。Anatomy of Pleural SacTaken from Sherwood, Human Physiology: From Cells to Systems, 5th Ed第三十五 頁(yè) ，共八十 頁(yè) 。第三十六 頁(yè) ，共八十 頁(yè) 。AirliquidSURFACEPolar H2O molecules attractSurface tension第三十七 頁(yè) ，共八十 頁(yè) 。肺表面張力表面張力液體薄層肺泡腔液面壓力第三十八 頁(yè) ，共八十 頁(yè) 。where:P = pressureST = surface tensionr = radius of the bubbleP = 2ST/rLaplaces law第三十九 頁(yè) ，共八十 頁(yè) 。P = 2x1= 10P = 2x1= 5105Connected bubbles第四十 頁(yè) ，共八十 頁(yè) 。Alveoli as bubbles第四十一 頁(yè) ，共八十 頁(yè) 。Figure 77From . West, Respiratory Physiology: The Essentials (8th ed.), 2024, used with permission by Lippincott Williams Wilkins第四十二 頁(yè) ，共八十 頁(yè) 。Figure 73From . West, Respiratory Physiology: The Essentials (8th ed.), 2024, used with permission by Lippincott Williams Wilkins第四十三 頁(yè) ，共八十 頁(yè) 。Saline AirVon Neergaard第四十四 頁(yè) ，共八十 頁(yè) 。Figure 75From . West, Respiratory Physiology: The Essentials (8th ed.), 2024, used with permission by Lippincott Williams Wilkins第四十五 頁(yè) ，共八十 頁(yè) 。呼吸壓力? 胸內(nèi)壓 胸膜腔內(nèi)的壓力? 肺內(nèi)壓 肺泡內(nèi)壓力? 經(jīng)胸廓壓 肺內(nèi)壓與體表壓之差值? 經(jīng)肺壓 肺內(nèi)壓與胸內(nèi)壓之差值? 經(jīng)胸壁壓 胸內(nèi)壓與體表壓之差值 第四十六 頁(yè) ，共八十 頁(yè) 。PA (cm H2O)+110+0Air Flow (L/s)1 2 3 4time (sec)58Ppl (cm H2O)The linear Dashed trace is the Ppl required to overe recoil forces.More Ppl (solid curve) is required toovere airway resistance to flow.. ?P = PAPB ? Resist?Flow. VT (L)0Respiratory CycleInspiration Expiration58865Rest FRCInspiration End Inspiration+00 AirFlowPA= 0PplExpirationtimeRespiratory CycleSingle VT BreathPB=0第四十七 頁(yè) ，共八十 頁(yè) 。順應(yīng)性? 定義 單位壓力改變時(shí)容積的改變? 公式 C=⊿ V/⊿ P? 肺順應(yīng)性
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