BIOS255 Week 6 Respiratory System-Anatomy - Lab

Learning Objectives: 1. Describe the gross anatomical features of the respiratory tract. 2. Trace the flow of air into and out of the lungs. 3. Explain how Boyle’s law relates to the changing intrapleural and alveolar air pressures and volumes during respiration. 4. Define various pulmonary volumes. Introduction: The respiratory tract carries air to and from the lungs. Air drawn in through the nose or mouth passes through the pharynx and larynx and continues through the trachea, bronchial tree, and the lungs. Inhalation relies on decreasing the pressure in the lungs below the atmospheric pressure to draw air in. Pressure in the lungs is decreased by increasing the volume of the thoracic cavity; The lungs move with the chest wall because the cavities which contain them are closed spaces. Each lung is protected by a double membrane called the pleural membrane. We can assess a person’s lung function by performing spirometry which allows us to measure pulmonary volumes. Don’t hold your breath, let’s go learn about this essential system! Assignment: Part 1 Complete the activities in Anatomy.TV Respiratory System: Upper and Lower Respiratory Tract, Pulmonary Ventilation, Lung Volumes and Capacities. To access Anatomy.TV: Resources tab>Library>Library Resources-Database AZ> Anatomy.TV>Titles(default tab): Choose assigned system>choose assigned sections You will then work through the material and activities by scrolling down on the right. This will allow you to see and work through all activities for that section. Part 2 Complete the lab report. Respiratory Anatomy Lab Report 1. Purpose: lOMoARcPSD| Please state in your own words the purpose of the lab. Review the different ways the Respiratory system works and what learn what organs are part of this system. 2. Procedure: Briefly discuss the procedure for this lab. • learn about the different organs that help to regulate the respiratory system • Clinical studies on respiratory illnesses • Quizzes and case studies • How the respiratory system is affected during aging 3. Data and Details: a. List 4 functions of the respiratory system. 1. Ventilation- Delivery of O2 to the lungs and expulsion of CO2, and H2O out of the lungs. 2. Gas Exchange- Diffusion of O2 into the bloodstream and the diffusion of CO2 out of the bloodstream. 3. Blood PH- The regulation of the acid-based levels of blood. 4. Air preparation- The process of filtering, warming, and humidifying inhaled air. b. Identify and label the thyroid cartilage, cricoid cartilage and the epiglottis in this image of the larynx. lOMoARcPSD| Cricoid Cartilage (highlighted in yellow) Thyroid Cartilage (highlighted in green) Epiglottis (highlighted in blue) 4. Questions: a. According to Boyle’s law, how are pressure and volume related, given a closed container? Pressure and volume are related given a closed container according to Boyle’s law. Boyles law states that the pressure of a gas in a closed container is inversely proportional to the volume of the container. If the size of the closed container in decreased, the pressure of the gas increases, and that if the size of the container increases, the pressure of the gas inside the container decreases.