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Gas Exchange in Lungs Prof. K. Sivapalan
Properties of Gases 20132Gas Exchange
Water Vapor Pressure 20133Gas Exchange
Diffusion of Gases in Liquids 20134Gas Exchange
Diffusion of Different Gases 20135 Oxygen1.0 Carbon Dioxide20.3 Carbon Monoxide0.81 Nitrogen0.53 Helium0.95 Gas Exchange
Partial Pressures 20136Gas Exchange
Oxygen and Carbon dioxide in Expired air 20137Gas Exchange
Alveolar Gas Concentration 20138Gas Exchange
Respiratory Unit 20139Gas Exchange
Respiratory Membrane A layer of fluid lining the alveolus Alveolar epithelium Epithelial basement membrane Interstitium Capillary basement membrane Capillary endothelium Plasma and red cell 0.6 µ, 70 M 2, 60 – 140 ml of blood 201310Gas Exchange
201311 Diffusing Capacity Gas Exchange
Partial Pressure Difference across respiratory membrane 201312Gas Exchange
Factors Affecting Gas Exchange 201313Gas Exchange
Gas Exchange in Lungs Prof. K. Sivapalan. Properties of Gases 20132Gas Exchange.
Fundamental Digital Electronics Fundamental Digital Electronics.
Regulation of Fluid and Electrolyte Balance Prof. K. Sivapalan.
Gas Exchange Week 4. Daltons Law The partial pressures of the 4 gases add up to 760mm Hg. Dalton’s Law; in a mixture if gases, the total pressure.
Chapter 18a Gas Exchange and Transport. About this Chapter Diffusion and solubility of gases Gas exchange in lungs and tissues Gas transport in the blood.
Gas Transfer Factor Dr Rod Taylor Consultant Respiratory Physician.
Gas Exchange & Gas Transfer Dr Taha Sadig Ahmed Physiology Department, College of Medicine, King Saud University, Riyadh.
Gas Exchange GillsAlveoli. Need O 2 (IN) for cellular respiration to make ATP Need CO 2 (OUT) waste product from cellular respiration Why do.
Chapter 39: Physical Principles of Gas Exchange; Diffusion of Oxygen and Carbon Dioxide Through the Respiratory Membrane Guyton and Hall, Textbook of Medical.
GAS EXCHANGE Lecture – 5 Dr. Zahoor Ali Shaikh 1.
Lecture – 5 Dr. Zahoor Ali Shaikh 1. Gas Exchange takes place in alveoli and then at tissue level. Why we are breathing? To provide a continuous.
GAS DIFFUSION CHAPTER 7 DR. CARLOS ORTIZ BIO-208.
RESPIRATORY SYSTEM LECTURE-5 (GAS EXCHANGE) Dr. Mohammed Sharique Ahmed Quadri Assistant Prof. physiology Al maarefa college 1.
1 Structure and Function of the Pulmonary System Chapter 32.
Public Goods and Common Resources Economics for Business II Day 10 Spring 2013.
The human gas exchange system consists of the nasal passages, the pharynx or throat, the larynx or voice box, the trachea, the right and left bronchus.
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings About this Chapter Diffusion and solubility of gases Gas exchange in lungs.
Transport of gases in the blood. Gas exchange between the alveolar air and the blood in pulmonary capillaries results in an increased oxygen concentration.
Mechanics of Ventilation Prof. K. Sivapalan. Introduction 20132Mechanics of Ventilation.
Molecules move randomly & rapidly in relation to each other Net diffusion is from [high] to [low] Partial pr. of the gas is proportional to [gas]
Biology The development of internal gas exchange surfaces in larger organisms to maintain adequate rates of exchange. Mammals (alveoli, bronchioles, bronchi,
Respiratory Partial Pressure Primary determinant of diffusion and direction Describes the pressure of a particular gas within a mixture Equals the total.
The Human Respiratory System Trachea Cartilage (C- shaped rings) Bronchiole Bronchus (Plural = Bronchi) Rib Bone External intercostal muscle Internal.
Gas Exchange and Pulmonary Circulation. Learning Objectives Understand diffusion and the rate of diffusion. Understand gas pressure and partial pressure,
Chapter 39 Physical Principles of Gas Exchange By Dr. Mudassar Ali Roomi (MBBS, M.Phil.) Assist. Prof. Physiology.
Gas Exchange and Pulmonary Circulation. Gas Pressure Gas pressure is caused by the molecules colliding with the surface. In the lungs, the gas molecules.
Homework 1.Q 2,3,4 pp Complete todays lesson work (role of the alveolus in gas exchange) 3.Red p75 mah 4.Red p77 mah 5.Red q p79 mah.
Respiratory System Chapter 16 Bio 160. Introduction The respiratory system consists of tubes that filter incoming air and transport it into the microscopic.
Module C: Diffusion. The Concept of Total Compliance There are actually 3 compliances that we can consider: The compliance of the chest wall or thorax.
State 2 ways in which carbon dioxide is transported in the blood. (2 marks) * Dissolved in blood plasma (5 %) * Combined with haemoglobin in red blood.
Cell Transport. Diffusion Migration of substances from regions where their concentration is high to regions where their concentration is low. Diffusion.
Chapter 16. Ventilation includes: Inspiration (inhalation) Expiration (exhalation)
Respiratory System Alveolar Gas Exchanges. Alveoli Remember, alveoli are microscopic air sacs that are located in clusters at the ends of the alveolar.
Gas exchange internal and external respiration. Know how 02 and C02 transfer from the atmosphere to the working muscles.
NOTES: THE CIRCULATORY AND RESPIRATORY SYSTEMS What are the functions of the circulatory system? Summarize the path of blood through the heart. What is.
Ch. 16 Respiratory System Sec Control of Breathing Normal breathing is a rhythmic, involuntary act that continues even when a person is unconscious.
1 Section II Respiratory Gases Exchange 2 3 I Physical Principles of Gas Exchange.
When you breathe in, air enters your lungs. Inside the lungs are many tiny air sacs called alveoli.
6 The Respiratory System and Its Regulation chapter.
The Respiratory System. KEY CONCEPT The respiratory system exchanges oxygen and carbon dioxide.
4.3 Exchange of gases in the lungs. Learning outcomes Students should understand the following: The essential features of the alveolar epithelium as a.
Respiration Gases in, Gases Out Page Gas Exchange The alveoli exchange gases with the blood as the gases move from ___________c oncentration.
Circulatory System. Functions of the Circulatory System Blood carries oxygen and nutrients to the cells in the body Blood picks up carbon dioxide and.
Transport of gases in body Respiration (Breathing)
Partial Pressures of O 2 and CO 2 Normal air pressure at sea level 760 mm Hg = 1 atm = kPa airtracheaalveoliartery vein PO
Respiration. How does respiration take place? There are two respiratory movements: Inspiration (inhalation) Expiration (exhalation) When you inhale, air.
Partial pressure of individual gas Gas pressure Gas pressure Caused by multiple impacts of moving molecules against a surface Directly proportional to.
How and why Gas Exchange happens: Location: The alveoli Method: Diffusion.
Physical principles of gas diffusion. Physical principles of gas diffusion Henry’s law.
Elsevier items and derived items © 2008 by Mosby, Inc., an affiliate of Elsevier Inc. Some material was previously published. Structure and Function of.
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