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9 The Respiratory System
Lesson 9.1: Functions and Anatomy of the Respiratory System Lesson 9.2: Respiration: Mechanics and Control Lesson 9.3: Respiratory Disorders and Diseases
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Functions and Anatomy of the Respiratory System
Chapter 9: The Respiratory System Lesson 9.1 Functions and Anatomy of the Respiratory System
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Anatomy of the Respiratory System
the nose the nasal cavity the pharynx the larynx the trachea the bronchi the lungs
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Anatomy of the Respiratory System
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Anatomy of the Respiratory System
the nose nares the nasal cavity conchae the palate the sinuses
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Anatomy of the Respiratory System
the pharynx tonsils the larynx epiglottis the trachea C rings
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Anatomy of the Respiratory System
the bronchi primary bronchi bronchioles the alveoli surfactant pores of Kohn the alveolar capillary membrane
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Anatomy of the Respiratory System
the lungs mediastinum apex pleural sac parietal pleura visceral pleura
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The Upper Respiratory Tract
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Review and Assessment Match these words with 1–4 below: surfactant, apex, epiglottis, conchae. 1. lungs 2. larynx 3. nasal cavity 4. alveoli
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Respiration: Mechanics and Control
Chapter 9: The Respiratory System Lesson 9.2 Respiration: Mechanics and Control
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Respiration: Mechanics and Control
nonrespiratory air maneuvers control of breathing lung volume
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Respiration also known as breathing
air always moves from a higher pressure area to a lower pressure area four key tasks involved in respiration pulmonary ventilation external respiration respiratory gas transport internal respiration
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Respiration Boyle’s law
as the volume of a gas increases, the pressure of the gas decreases
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Respiration inspiration (inhalation) expiration (exhalation)
diaphragm and intercostal muscles contract thoracic cavity expands expiration (exhalation) diaphragm and intercostal muscles relax thoracic cavity shrinks
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Respiration
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Nonrespiratory Air Maneuvers
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Control of Breathing neural factors chemical factors
pons and medulla oblongata chemical factors central chemoreceptors peripheral chemoreceptors mechanoreceptors
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Control of Breathing
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Lung Volume static dynamic air volume in lungs
air volume in lungs based on time
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Static Lung Volume tidal volume vital capacity residual volume
functional residual capacity inspiratory reserve volume expiratory reserve volume total lung capacity
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Dynamic Lung Volume forced expiratory volume in one second
forced expiratory volume in one second/forced vital capacity
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Review and Assessment True or False?
1. The pons and medulla control breathing. 2. Static lung volume involves time. 3. Muscles contract in inspiration. 4. Larger gas volume, higher pressure. 5. Gas moves from low to high pressure.
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Respiratory Disorders and Diseases
Chapter 9: The Respiratory System Lesson 9.3 Respiratory Disorders and Diseases
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Respiratory Disorders and Diseases
upper respiratory tract illnesses lower respiratory tract illnesses chronic obstructive pulmonary diseases asthma lung cancer
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Upper Respiratory Tract Illnesses
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Upper Respiratory Tract Illnesses
avoiding URIs cover when sneezing and coughing wash hands don’t touch hands to eyes, nose, mouth influenza vaccine icyimage/Shutterstock.com
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Lower Respiratory Tract Illnesses
acute bronchitis inflammation pneumonia infection tuberculosis
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Chronic Obstructive Pulmonary Diseases
causes smoking living with COPD stop smoking purse-lipped breathing
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Chronic Obstructive Pulmonary Diseases
emphysema decreased lung surface area pink puffers chronic bronchitis inflammation obstructs airways blue bloaters
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Asthma asthma attack inflamed and narrowed airways bronchospasms
caused by allergens or irritants treatment relaxes muscles to expand airways xavier gallego morel/Shutterstock.com
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Lung Cancer more deaths from lung cancer than other cancers
non-small cell lung cancer more common lung cancer small cell lung cancer less common lung cancer
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Review and Assessment Fill in the blanks with: small cell, bronchospasms, decreased lung surface area, or infection. 1. An asthma attack includes _______________. 2. A symptom of emphysema is _______________. 3. The more common lung cancer is _______________. 4. Tuberculosis is caused by _______________.
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