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©Subject Support 2010.
Hairs: Filter Dust, Pollen and Foreign bodies Air is warmed and moistened Cilia transport foreign particles to the Pharynx
©Subject Support EPIGLOTTIS : Flap of cartilage at the back of the tongue Closes when swallowing to direct food to the stomach PHARYNX: Tube in the Throat
©Subject Support LARYNX: Voice Box. Contains Vocal Chords Connects Pharynx to Trachea TRACHEA: Windpipe Rings of cartilage stop it from collapsing Branches into Bronchi
©Subject Support Bronchus: Carry air into lungs Branches into Lobar Bronchi Bronchial Network = Bronchial Tree Bronchioles: Small airways 1mm Diameter End in Air Sacs
©Subject Support Left Lung is smaller than the right Right Lung has 3 lobes Left Lung has 2 lobes Pleural Membrane: Pleura surround the lungs Cavity within lubricates pleural surfaces preventing friction
©Subject Support Visceral Pleura – Inner Pleural membrane Covers the lung surface Pleural Fluid Produced by the membrane Lubricating Fluid
©Subject Support million gas-filled air sacs in each lung Huge area for GASEOUS EXCHANGE Capillaries surround the alveoli O 2 into blood CO 2 into alveoli
©Subject Support Divides the Chest and Abdomen Breathing muscle Contraction Increases chest cavity Relaxation decreases
©Subject Support Internal and External INTERNAL – Inside Ribcage Move ribs DOWN + IN EXTERNAL – Outside Ribcage MOVE ribs UP + OUT
©Subject Support Gaseous Exchange Breathing Lung Volumes Control of breathing
©Subject Support Diffusion between air(alveoli) – blood(capillaries) Partial Pressure – Gases in contact with liquid diffuse into a solution
©Subject Support Blood entering the capillaries – Low O 2 Content / High CO 2 Content O 2 Diffuses into the blood CO 2 Diffuses into the Alveoli
©Subject Support Intercostal muscles contract Ribs lifted UP+OUT Diaphragm forced down Pressure drops Air floods into the lungs
©Subject Support Intercostal muscles relax Ribs fall DOWN+IN Diaphragm RELAXES Pressure increases Air floods out of the lungs
©Subject Support Respiratory Rate = Amount of air breathed in 1 Minute. Tidal Volume = Amount of air breathed in/out in one breath Increases during exercise
©Subject Support Inspiratory Reserve Volume = Breathing in deeply. Over and above tidal volume Expiratory Reserve Volume = Breathing out forcefully.
©Subject Support Vital Capacity = Maximum Inspiration followed by Maximal Expiration Residual Volume = Lungs never fully empty – Prevents collapse Total Lung Capacity = Vital Capacity + Residual Volume
©Subject Support NEURAL CONTROL Controlled from the Medulla in the brain Send impulses to Neurones CHEMICAL CONTROL Chemoreceptors sense changes in Oxygen and Carbon Dioxide Located in Aorta and Carotid Arteries
P6 M3. Respiratory System: Intakes oxygen Releases carbon dioxide waste Circulatory system: Transports gases in blood between lungs and cells Respiratory.
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 Objectives: 1. Describe the structure of the respiratory system. 2. Analyze the function of the respiratory system.
RESPIRATION Exchange of gases (O 2 and CO 2 ) Diffusion through a thin moist membrane Nose: 2 nostrils Air warmed and filtered Cilia and mucus.
Respiratory system By Dr Shamshad Begum.Loni Lecture notes.
Functions of the Respiratory system P6 M3. responsible The respiratory system is responsible for: – getting oxygen in to our body – Getting carbon dioxide.
Respiratory System Revision. The respiratory system is mainly concerned with breathing The function of the respiratory system is to get oxygen into the.
Respiratory System Anatomy & Physiology Review. Definititions Respiration: movement of oxygen from atmosphere into cells and return of carbon dioxide.
UNIFYING CONCEPTS OF ANIMAL RESPIRATION Cells using cellular respiration need a steady supply of oxygen and must continuously dispose of CO 2 The respiratory.
The passage of air from nose/mouth to lungs Click the mouse to follow the passage of air from the nose/mouth to the lungs.
ELAINE N. MARIEB EIGHTH EDITION 13 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings PowerPoint ® Lecture Slide Presentation by.
I.Introduction A.Of all the substances the body must have to survive, oxygen is by far the most critical: 1.Without food – live a few weeks 2.Without.
23-1 Chapter 23 Respiratory System Respiration Ventilation: Movement of air into and out of lungs External respiration: Gas exchange between air.
Respiratory System. Which Lung is Larger? A.Right B.Left.
© 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 Take a deep breath and relax. Structure Nose Pharynx Larynx Trachea Bronchi Alveoli Lungs.
Respiratory System Exchange of oxygen and carbon dioxide between the blood and the muscle tissues Exchange of oxygen and carbon dioxide between the lungs.
Chapter 40 Respiration: A Summary AP Biology Spring 2011.
IB Biology Gas Exchange IB Biology Ventilation, gas exchange and cell respiration. 1. Ventilation: The flow of air in and out of the.
Copyright 2009, John Wiley & Sons, Inc. Chapter 23: The Respiratory System.
Respiratory Emergencies A Comprehensive Look Respiratory system Provided for the passage of O2 to enter Necessary for energy production and for CO2 to.
Respiratory Emergencies A Comprehensive Look. Respiratory system Provided for the passage of O2 to enter Provided for the passage of O2 to enter Necessary.
The Respiratory System The Lung Association of Saskatchewan © The respiratory system is what we use to breathe. It may seem simple to breathe, but it’s.
The Respiratory System Chapter 13. Organs of the Respiratory System Nose Pharynx Larynx Trachea Bronchi & their smaller branches Lungs – Alveoli: air.
THIS IS With Host... Your Breathing Lungs The Nose Knows BloodTubes Misc.
Respiratory System ROLE: To bring oxygen into the body and to get rid of the carbon dioxide from the body.
Body in Action §Credit Objectives. §Sub-topic (a) Movement §Describe the structure of a synovial joint. §Ball and socket and hinge joints are called synovial.
Respiratory System & Gas Exchange. Lungs Central Organ of the Respiratory System 2 compartments connect outside environment through the trachea Keeps.
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Respiratory System Take a big whiff!
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