1. Chapters 16 Respiratory System Human Anatomy & Physiology P. Wilson1

2. Functions of the Respiratory System transport of air into and out of the lungs entrapment of particles in incoming air help to control temperature and moisture content of air entering the lungs produce vocal sounds participate in the sense of smell and in the regulation of blood pH Human Anatomy & Physiology P. Wilson2

3. II. 16.1 Introduction: The 4 terms associated with respiration There are 4 terms associated with respirations: 1.Ventilation is the movement of air into and out of the lungs. 2.Gas exchange is the exchange of gases between the blood and the air in the lungs (external respiration) AND the exchange of gases between the blood and the cells (internal respiration). Human Anatomy & Physiology P. Wilson3

4. II. 16.1 Introduction: The 4 terms associated with respiration 3. Gas transport is the process of transporting gas in the blood between the lungs and the cells in the body. 4. Cellular respiration is the process of oxygen utilization & carbon dioxide production at the cellular level. Human Anatomy & Physiology P. Wilson4

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6. III. 16.2 Organs of the Respiratory System B.Functions of the structures: 1.Mucus functions to entrap dust brought in with inhalation. 2.Sinuses function to lighten the mass of the skull and to provide vocal resonance. 3.Mucous membranes warm & humidify (moisten) air entering the nose. 4.Cilia provide movement to the mucus layer so that entrapped particles are moved into the esophagus and out of the respiratory tract. Human Anatomy & Physiology P. Wilson6

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8. III. 16.2 Organs of the Respiratory System E. Larynx: 1.The structure of the larynx that helps close the glottis during swallowing is the epiglottis. 2.The structures of the larynx that produce sound are the vocal cords. Human Anatomy & Physiology P. Wilson8

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10. III. 16.2 Organs of the Respiratory System H. Lungs: 1.The right lung has 3 lobes, and the left lung has 2 lobes. Human Anatomy & Physiology P. Wilson10

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