We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byRegan Wynn
Modified over 6 years ago
Respiration Involving Gas ExchangeCellular Respiration Respiration Involving Gas Exchange
General Functions of the Respiratory SystemA. Area for gas exchange B. Moves air C. Protects respiratory surfaces D. Provides nonspecific defenses E. Produces sounds F. Provides olfactory sensations
Components of the Respiratory SystemNose and nasal cavity Pharynx (Throat) Larynx (Voicebox) Trachea (Windpipe) Lungs
The Nose: Structure Hair Mucous membranes Nasal conchaeOlfactory epithelium
The Nose: Function Keeps out large particles Moistens and filters airTraps debris and pathogens Houses olfactory receptors
The Pharynx: StructureLined with Mucous Membranes 3 regions: Nasopharynx Oropharynx Laryngopharnx
The Pharynx: Function Warms and moistens airPassageway for air and food Resonating chamber for sounds Houses tonsils
The Larynx: Structure Cartilages Mucous Membrane Glottis Vocal cords
The Larynx: Function Passageway for air Trap foreign particlesProduce sound Posterior view
Vocal cords producing sound at 3 different pitches120 Hz 200 Hz 160 Hz
The Trachea: StructureEpithelium Tracheal Cartilages Trachealis Muscle
The Trachea: Function Passageway for air Trap foreign particles Protect airway and keep it from collapsing
Lungs: Structure Primary Bronchi Secondary Bronchi Tertiary BronchiBronchioles Alveoli
Alveoli Oxygen-poor blood Oxygen-rich blood Bronchiole Alveoli BloodLE 22-5b Alveoli Oxygen-poor blood Oxygen-rich blood Bronchiole Alveoli Blood capillaries
Pulmonary Ventilation (Breathing)
Rib cage gets smaller as rib muscles relax Rib cage expands asLE 22-7a Rib cage gets smaller as rib muscles relax Rib cage expands as rib muscles contract Air inhaled Air exhaled Diaphragm Diaphragm contracts (moves down) Diaphragm relaxes (moves up) Inhalation Exhalation
Pulmonary VentilationTrachea Lungs Diaphragm
Factors Affecting Pulmonary VentilationCO2 2. pH
Breathing control centers stimulated by:LE Pons Breathing control centers stimulated by: Medulla CO2 increase/pH decrease in blood Nerve signals indicating CO2 and O2 levels Nerve signals trigger contraction of muscles CO2 and O2 sensors in aorta Diaphragm Rib muscles
Gas Exchange External Respiration Internal Respiration Exhaled airInhaled air Gas Exchange Alveolar epithelial cells Air spaces CO2 O2 External Respiration Alveolar capillaries of lung CO2-rich, O2-poor blood O2-rich, CO2-poor blood Heart Tissue capillaries CO2 O2 Internal Respiration Interstitial fluid CO2 O2 Tissue cells throughout body
Animations on Internal and External Respiration
Gas Transport of OxygenLE 22-10 Gas Transport of Oxygen Iron atom O2 loaded in lungs O2 O2 unloaded in tissues O2 Heme group Polypeptide chain
Gas Transport of CO2 7% dissolved in plasma 23% bound to hemoglobin 70% converted to carbonic acid (which dissociates into H+ and HCO3-)
Simple Spirometer Used in Lab
Lung Volumes & Capacities
UNIFYING CONCEPTS OF ANIMAL RESPIRATION
Respiratory System Objectives:
Respiration Metabolism. Respiration What is unique about blood in pulmonary arteries compared with blood in other arteries? a) Blood in pulmonary arteries.
What is the point of the respiring? ◦ Gas exchange provides oxygen for cellular respiration and gets rid of carbon dioxide. How do gases move from.
Human Respiratory System
The Respiratory System
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings The primary function of the respiratory system is to allow oxygen from the air.
1.Respiration (external, internal, and cellular). 2.Production of sound (vocal cords). 3.Pulmonary ventilation. 4. Inspiration (intercostals muscles lift.
Chapter 23. Functions Area of gas exchange between air and circulating blood Producing sounds for communication.
GAS EXCHANGE IN HUMANS.
Respiratory System Chapter 16.
Respiratory System. Nose – produces mucus, warms, moistens, and filters air, and resonance chamber for speech Pharynx – passage way for air and food.
Respiratory System. Upper Respiratory System –Nose –Nasal cavity –Pharynx Lower Respiratory System –Larynx –Trachea –Bronchi –Lungs.
End Show Slide 1 of 37 Copyright Pearson Prentice Hall 37-3 The Respiratory System.
Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings Chapter 22 Gas Exchange.
Otorhinolaryngology - branch of medicine that deals with the ears, nose and throat Pulmonologist – specialist in the diagnosis and treatment of lung.
Respiratory System Biol 105 Lecture 18 Chapter 14.
© 2021 SlidePlayer.com Inc. All rights reserved.