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York University (35,583)
KINE 2011 (149)
Gillian Wu (25)
Lecture

Jan 18th , 2012 Kine 2.docx

3 Pages
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Department
Kinesiology & Health Science
Course Code
KINE 2011
Professor
Gillian Wu

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Description
Diseases of the Airway Restrictive Disease : no change in resistance Normal airway resistance ( air can move in and out easily) -Problem is that lung cannot inflate as much (reduced lung capactity ; volume of air; LUNG can’t expland as much. Caused by diseases of 1. Pleura (including pneumothorax) -Penomothorax can get better 2. Pulmonary Fibrosises (thickening of alveolar walls in the lung tissue) -Lung is made of elastic spongy fibers that’s why it contracts and expands but it becomes more non-elastic fibrous tissue in this pulmonary fibroses. Cystic Fibroses is not the same ; it’s the thinking of mucusus that lines the alveoli It does not have this connective tissues 3.Neuromuscular Disorders -Problems with our nervous system (ALS, -Problems with our muscles (polio, myasthenia gravis(stiff muscles), muscular dystrophy(weak muscles) Analogy -Tieing a belt around a chest to breath is like RESTRICTIVE DISEASE. Obstructive is like covering half your mouth. -Movement of air (slower in obstructive) and (faster in resistive) -Spirometer: device that measure air flow in and out of your mouth Tidal Vol: normal volume of breathing in and out Reserve Volume: Some air stays inside no matter what. Know these formulas, and the graph. Alveolar Ventilation The amount of air moved in/out of the alveoli -expressed per minute -minute ventilation (ml/min) air moving in and out of the mouth per minute -Dot indicates that it’s a RATE (ml/min) -V E minute ventilation -The amount of air that moves in and out of lungs but that doesn’t predict how much gets in the alveoli ( that’s where gas exchange occurs) -No all air that we breathe gets to our lungs. -150ml is the air that is in the trachea that NEVER makes it out (dead space since it doesn’t do anything) * but everybody has that* -500ml you breath in  it pushes the 150ml down into alveoli  only 350ml goes into alveoli -When you take in air you are not getting all NEW AIR. 150ml is always stuck down somewhere. Alveolar Ventilation VA= Alveolar Ventilation -tidal volume(Vt
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