Module_05_Lab_Worksheet_05072018.docx

During inspiration the outer intercostal muscles

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During inspiration, the outer intercostal muscles contract which the area of the thoracic cavity and reduces the pressure. The air from outside rushes into the lungs (internal balloon) When exhaling, the intercostal muscles contract and bring the ribs back to the original position the diaphragm (rubber sheath) is brought back to its original position. This reduces the space in the chest cavity and increases the pressure. This causes the balloon deflate (Sanders, 2007). 7. If someone is at a higher altitude, would it be easier or more difficult for this individual to breath? Why? An individual at a higher altitude may find it difficult to breath and will notice increased SOB due to a decrease in atmospheric pressure, the air is thinner and there is less oxygen available (Betts, 2017).
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Part 02 Procedure: Spirometry Measurements 1. Assessing the respiratory volumes requires a device called a spirometer. There are many different models of a spirometer; for our purposes, we will use a basic model of a spirometer. Collect the spirometer and a number of mouth pieces utilized for the spirometer. Respiratory Volume 1 st Trial 2 nd Trial 3 rd Trial Average Tidal Volume 500 500 750 583.33 Expiratory Reserve Volume 2500 1500 1750 1916.67 Vital Capacity 3000 2000 2500 2500 2. You will measure three respiratory volumes: Tidal volume (TV), expiratory reserve volume (ERV) and vital capacity (VC). Record your data and results in the chart below: 3. How would someone going through an asthma attack affect each of the following respiratory volumes: a. Tidal Volume: Decrease b. Expiratory Reserve Volume: Decrease c. Vital Capacity: Decrease These would all decrease due to the restricted air movement through the trachea (Betts, 2017). 4. How would a training for an endurance sporting event affect each of the following respiratory volumes: a. Tidal Volume: Increase b. Expiratory Reserve Volume: Increase c. Vital Capacity: Increase These would all increase due to the need for additional release of CO2, thereby requiring more O2 as well (Betts, 2017).
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5. How would an individual with emphysema affect each of the following respiratory volumes: a. Tidal Volume: Decrease b. Expiratory Reserve Volume: Decrease c. Vital Capacity: Decrease These would decrease due to air trapping in the lungs caused by restricted exhalation (Betts, 2017). Part 03 Procedure: Auscultation of Lungs 1. Auscultation of the lungs will require a stethoscope, specifically the diaphragm side of the stethoscope. In a medical examination, normally the medical practitioner would listen to the lungs without the interference of clothing and would listen to the anterior, lateral and posterior lungs. We will only listen to the lateral and posterior aspect of the lungs and will listen through clothing, preferably just a shirt. 2. Try to visualize the location of the lobes of the lungs while auscultating. Have your lab partner breathe in and out while trying to ignore the heart sounds in the background. Avoid listening to the lungs over the scapula.
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