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Copyright © 2006 by Elsevier, Inc. Mechanics of Respiration Inspiration Resting –Diaphragm Active –Diaphragm –External intercostal muscles Diaphragm
Copyright © 2006 by Elsevier, Inc. Mechanics of Respiration Inspiration Active –Diaphragm –external intercostals Spine External Intercostals ribs
Copyright © 2006 by Elsevier, Inc. Mechanics of Respiration Expiration Resting passive process elastic properties of lung Active Abdominals decrease chest volumes Active exhalation abdominal compression Active inspiration abdominal relaxation
Copyright © 2006 by Elsevier, Inc. Mechanics of Respiration Expiration Active Internal intercostals Internal Intercostals ribs Spine
Copyright © 2006 by Elsevier, Inc. Patm Palveolar Rest Inhalation due to expansion of chest cavity (Boyles law) Mechanics of Inhalation
Copyright © 2006 by Elsevier, Inc. Movement of Air In and Out of Lungs Pleural Pressures –Resting -5 cm H 2 0 –Inspiration -8 cm H 2 0 Alveolar Pressure –Resting 0 cm H 2 0 –Inspiration-1 cm H 2 0 –Expiration 1 cm H 2 0
Copyright © 2006 by Elsevier, Inc P r e s s u r e ( c m / H 2 O ) V o l u m e C h a n g e ( l i t e r ) Alveolar pressure Pleural pressure Transpulmonary Pressure Pressure and Volume Changes During Breathing Inspiration Expiration
Copyright © 2006 by Elsevier, Inc. Pulmonary Volumes Figure 37-6; Guyton & Hall
Anatomic Dead Space Low Blood Flow Physiologic Dead Space Definitions of Dead Space Copyright © 2006 by Elsevier, Inc.
Compliance of Lungs Determined by elastic forces Elastic forces –lung tissue –surface tension Lung Volume Change in Pleural Pressure Inhalation Exhalation -4 -8
Copyright © 2006 by Elsevier, Inc. Control of Bronchiolar Diameter Nervous –Sympathetics 2 receptors dilate –Parasympathetics Acetylcholine constrict Humoral –Histamine, acetylcholine » Constrict –Adrenergic ( agonists) » Relax
Copyright © 2006 by Elsevier, Inc. Airway Resistance during Forced Exhalation Guyton & Hall
Spirometry. Respiration External respiration – Gas exchange between blood and alveoli Internal respiration – Gas exchange between blood and tissue cells.
Functions of the Respiratory system P6 M3. responsible The respiratory system is responsible for: – getting oxygen in to our body – Getting carbon dioxide.
Breathing Breathing- (aka ventilation), The process through which the respiratory system moves air into and out of the lungs. In contrast, Respiration.
IB Biology Gas Exchange IB Biology Ventilation, gas exchange and cell respiration. 1. Ventilation: The flow of air in and out of the.
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Overview of Respiration and Respiratory Mechanics Dr Shihab Khogali Ninewells Hospital & Medical School, University of Dundee.
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Respiratory System Take a big whiff!
Respiratory System Exchange of oxygen and carbon dioxide between the blood and the muscle tissues Exchange of oxygen and carbon dioxide between the lungs.
© 2012 Pearson Education, Inc. Chapter 23 – The Respiratory System $100 $200 $300 $400 $500 $100$100$100 $200 $300 $400 $500 Structures of the Respiratory.
Respiratory System ROLE: To bring oxygen into the body and to get rid of the carbon dioxide from the body.
Respiratory Emergencies A Comprehensive Look Respiratory system Provided for the passage of O2 to enter Necessary for energy production and for CO2 to.
Respiratory System Part II. Respiratory Physiology In order to supply the body with oxygen and get rid of carbon dioxide the process of respiration MUST.
Respiratory Emergencies A Comprehensive Look. Respiratory system Provided for the passage of O2 to enter Provided for the passage of O2 to enter Necessary.
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End Show Slide 1 of 37 Copyright Pearson Prentice Hall WarmUp Answer the following questions: 1.What are the 3 main types of blood cells? What are their.
Copyright 2009, John Wiley & Sons, Inc. Chapter 23: The Respiratory System.
22-1 Chapter 22 Lecture Outline See PowerPoint Image Slides for all figures and tables pre-inserted into PowerPoint without notes. Copyright (c) The McGraw-Hill.
ELAINE N. MARIEB EIGHTH EDITION 13 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings PowerPoint ® Lecture Slide Presentation by.
Function of the Respiratory System Oversees gas exchanges between the blood and external environment Exchange of gasses takes place within the lungs in.
Respiratory System Anatomy & Physiology Review. Definititions Respiration: movement of oxygen from atmosphere into cells and return of carbon dioxide.
Transport of gases in body Respiration (Breathing)
Respiratory Physiology: Gas Exchange Dr Shihab Khogali Ninewells Hospital & Medical School, University of Dundee.
AS level PE Respiratory system. Discus mechanics of breathing InspirationExpiration Air is distributed to the lungs by way of the –Trachea –Primary bronchi.
Lectures on respiratory physiology Mechanics of Breathing I.
APS Refresher Course Mechanics of Breathing John B. West, MD, PhD, Dsc UCSD School of Medicine Experimental Biology 2008 April 5, 2008 APS Refresher Course.
Respiratory System Revision. The respiratory system is mainly concerned with breathing The function of the respiratory system is to get oxygen into the.
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UNIFYING CONCEPTS OF ANIMAL RESPIRATION Cells using cellular respiration need a steady supply of oxygen and must continuously dispose of CO 2 The respiratory.
ALOK SINHA Department of Medicine Manipal College of Medical Sciences Pokhara, Nepal.
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