What Occurs In The Capillaries Of The Alveoli


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Regulation of Tissue Oxygenation, Second Edition


Regulation of Tissue Oxygenation, Second Edition

Author: Roland N. Pittman

language: en

Publisher: Biota Publishing

Release Date: 2016-08-18


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This presentation describes various aspects of the regulation of tissue oxygenation, including the roles of the circulatory system, respiratory system, and blood, the carrier of oxygen within these components of the cardiorespiratory system. The respiratory system takes oxygen from the atmosphere and transports it by diffusion from the air in the alveoli to the blood flowing through the pulmonary capillaries. The cardiovascular system then moves the oxygenated blood from the heart to the microcirculation of the various organs by convection, where oxygen is released from hemoglobin in the red blood cells and moves to the parenchymal cells of each tissue by diffusion. Oxygen that has diffused into cells is then utilized in the mitochondria to produce adenosine triphosphate (ATP), the energy currency of all cells. The mitochondria are able to produce ATP until the oxygen tension or PO2 on the cell surface falls to a critical level of about 4–5 mm Hg. Thus, in order to meet the energetic needs of cells, it is important to maintain a continuous supply of oxygen to the mitochondria at or above the critical PO2 . In order to accomplish this desired outcome, the cardiorespiratory system, including the blood, must be capable of regulation to ensure survival of all tissues under a wide range of circumstances. The purpose of this presentation is to provide basic information about the operation and regulation of the cardiovascular and respiratory systems, as well as the properties of the blood and parenchymal cells, so that a fundamental understanding of the regulation of tissue oxygenation is achieved.

Physics, Pharmacology and Physiology for Anaesthetists


Physics, Pharmacology and Physiology for Anaesthetists

Author: Matthew E. Cross

language: en

Publisher: Cambridge University Press

Release Date: 2008-03-27


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The FRCA examination relies in part on a sound understanding of the basic sciences (physics, physiology, pharmacology and statistics) behind anaesthetic practice. It is important to be able to describe these principles clearly, particularly in the viva section of the examination. This book provides the reader with all the important graphs, definitions and equations which may be covered in the examination, together with clear and concise explanations of how to present them to the examiner and why they are important. Particular attention is paid to teaching the reader how to draw the graphs. This is an aspect of the examination which can be overlooked but which, if done well, can create a much better impression in the viva situation. Packed full of precise, clear diagrams with well structured explanations, and with all key definitions, derivations and statistics, this is an essential study aid for all FRCA examination candidates.

Anatomy & Physiology


Anatomy & Physiology

Author: Lindsay Biga

language: en

Publisher:

Release Date: 2019-09-26


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