Chapter 24 - The respiratory system. After completing chapter 24, you will be able to: Explain the functions of the respiratory system, explain the difference between internal respiration and external respiration, describe how the larynx produces voice sounds, list the structures contained within the lungs, describe the coverings of the lungs and chest cavity,. | 24 The Respiratory System 24- Learning Outcomes Explain the functions of the respiratory system. Explain the difference between internal respiration and external respiration. Describe how the larynx produces voice sounds. List the structures contained within the lungs. Describe the coverings of the lungs and chest cavity. 24- Learning Outcomes (cont.) Describe the events that lead to the inspiration and expiration of air. Explain how the brain controls breathing and how normal breathing patterns can be disrupted. Describe how oxygen is transported from the lungs to body cells. 24- Learning Outcomes (cont.) Describe how carbon dioxide is transported from body cells to the lungs. List and explain various respiratory volumes and tell how they are used to diagnose respiratory problems. Describe the causes, signs and symptoms, and treatments of various diseases and disorders of the respiratory system. | 24 The Respiratory System 24- Learning Outcomes Explain the functions of the respiratory system. Explain the difference between internal respiration and external respiration. Describe how the larynx produces voice sounds. List the structures contained within the lungs. Describe the coverings of the lungs and chest cavity. 24- Learning Outcomes (cont.) Describe the events that lead to the inspiration and expiration of air. Explain how the brain controls breathing and how normal breathing patterns can be disrupted. Describe how oxygen is transported from the lungs to body cells. 24- Learning Outcomes (cont.) Describe how carbon dioxide is transported from body cells to the lungs. List and explain various respiratory volumes and tell how they are used to diagnose respiratory problems. Describe the causes, signs and symptoms, and treatments of various diseases and disorders of the respiratory system. 24- Introduction Function Move air in and out of lungs (ventilation) Delivers oxygen (O2) Removes carbon dioxide (CO2) External respiration Occurs in the lungs Internal respiration Occurs in the hemoglobin O2 O2 O2 CO2 CO2 CO2 Lungs 24- Organs of the Respiratory System Nose Pharynx Larynx Trachea Bronchial tree Lungs 24- Nasal Cavity Nasal septum divides the cavity into right and left portions Nares – openings of the nose Nasal conchae extend from walls of nasal cavity Mucous membrane warms and moistens the air Cilia help eliminate particles 24- Paranasal Sinuses Air-filled spaces within the skull bones Open into the nasal cavity Reduce the weight of the skull Equalize pressure Give the voice its certain tone Skull bones with sinuses include: Frontal Sphenoid Ethmoid Maxillae bones 24- Pharynx and Larynx Pharynx Serves both the respiratory and digestive systems Larynx Also called the “voice box” Moves air in and out of the trachea and produces voice .
