The Respiratory System

The Respiratory System - Carolyn Geils Lab Tues: 6-9pm Ed...

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Carolyn Geils Lab Tues: 6-9pm Ed Merchant 3/11/08 Respiratory Air Flow and Volume Introduction: As a part of the lab for last week, the class was given a set of exercises on experimenting the Respiratory System. Gas exchange is able to take place in the body by the Respiratory System. The Respiratory System first starts with air entering through the nares of the nose. This then becomes the nasopharynx or nasal cavity, which leads into the oropharynx (oral cavity). The oropharynx then leads the air into the laryngopharynx, which empties out into the larynx or voice box. Once passes the voice box the air will enter the long windpipe or trachea. The trachea enters the thoracic cavity, which is where the longs are held. The trachea branches off into to separate bronchi, the right and left. The bronchi of the right and left lung are then split into alveoli. It is here in the alveolar air sacs that gas exchange between air and blood occurs. The diaphragm is also used in the respiratory system to push in and out the air. The Respiratory Air flow and Volume lab focused on was the lungs and their properties of total lung capacity, tidal volume, inspiratory reserve volume, expiratory reserve volume, vital capacity, residual volume, and functional residual capacity. It is important to know all of these factors because they show lung function. Also to calculate volume changes and how well the subject is inhaling and exhaling air. Each of these function or properties can be defined simply and have an equation to show how the result was produced. For instance, tidal volume (Vt) is the volume of air inspired and expired with each normal breath. Expired minute volume (Ve) is the amount
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of air expired in a minute, and is shown in the equation Ve = Vt × f. Inspiratory Reserve Volume (IRV) is used in many equations solving for these properties. Inspiratory reserve volume means the extra volume of air that can be inspired with maximal effort after
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The Respiratory System - Carolyn Geils Lab Tues: 6-9pm Ed...

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