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MCB 32L Lab Report #6

MCB 32L Lab Report #6 - Jae Shin(Clarice Kim Janice Chow R...

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Jae Shin (Clarice Kim, Janice Chow, R Leger) 10/19/10 Wendy Ingram Lab Report #6 Lab 6: Physiological Measurements in Humans I. Introduction Background: In this lab, we will use several tests to understand how the human body functions under a control condition and under a stress. Spirometry, specifically Pulmonary function testing will be used to test the respiratory function of the subject. The respiratory system is composed of the conducting airways, the lungs, and the respiratory muscles that allow gas exchanges between the body and the environment. VC = IRV + TV + ERV IRV = VC – (TV + ERV) VC – vital capacity IRV – Inspiratory Reserve Volume TV – Tidal Volume ERV – Expiratory Reserve Volume The second part of the lab explores the heart and blood circulation functions. When the heart contracts, the blood pressure from the ventricles raises the systolic pressure (Ps) and when the heart relaxes, the pressure drops to the diastolic pressure (Pd). The pulse pressure measures the differences of the two. In this lab, we will observe and record several cardiovascular parameters that determine the regulatory functions of the heart. Heart Rate = HR Mean Arterial Pressure = (MAP) Cardiac Output and Peripheral Resistance
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Stroke Volume = k (Ps – Pd) Cardiac output = k (Ps – Pd) (HR) Total Peripheral Resistance = MAP / Cardiac Output Finally, ischemic hand-grip exercise and electrocardiography, the electrical signal of the heart, will be utilized to further examine the function of the heart and blood circulation in human body. Hypothesis: For the respiration testing, if the subject is inhales and exhales using a bag, then the rate of respiration rate and tie tidal volume will increase in comparison to normal respiration rate and normal tidal volume. For the ischemic hand-grip exercise, my hypothesis is that over time, the pulse pressure and the heart rate will increase due to lack of blood circulation and the force production will decrease. II. Materials and Methods This lab incorporates several methods and techniques in order to test the cardiovascular and respiratory functions. In respiratory testing, Spirometry equipment with flow head and nose clip will be used to test the subject’s lung function and O2 and CO 2 regulation by inhaling and exhaling via flow head. This is called the pulmonary function testing, in which the subject performs several normal breaths followed by maximal inspiration and maximal forceful expiration.
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