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practice12 - Lesson 12 Practice Set Respiratory Physiology:...

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Lesson 12 Practice Set Respiratory Physiology: Structure and Mechanics 1. Assume that you are a molecule of oxygen, that your transport is typical of most other oxygen molecules, and that your destination is a myofiber in a leg muscle. In addition, assume that you hitch onto hemoglobin in a RBC in a pulmonary capillary and stay attached to that same molecule of hemoglobin until you are in a capillary in the muscle to which you are headed. Number the following events in correct order. The events have been divided into three consecutive groups (A- C) to make the task reasonable. A. __ Enter a nostril __ Tumble through the turbinate bones __ Pass through the larynx __ Pass through the pharynx __ Travel down the trachea __ Travel through a bronchus __ Enter a bronchiole __ Travel through a respiratory bronchiole __ Traverse an alveolar duct __ Enter an alveolar sac B. __ Diffuse through a thin film of fluid lining the alveolus __ Diffuse through a type I alveolar cell __ Diffuse through interstitial fluid near an alveolus __ Diffuse across pulmonary capillary endothelial cell __ Diffuse through the basement membrane of pulmonary capillary __ Dissolve in plasma in a pulmonary capillary __ Diffuse from plasma into a red blood cell __ Hitch up to a molecule of hemoglobin __ Flow through a pulmonary vein __ Explore the left atrium __ Cross the bicuspid valve __ Spend some milliseconds in the left ventricle __ Cross the aortic semilunar valve C. __ Ride the waves in the aorta __ Turn left into the left common iliac artery __ Cruise through the femoral artery __ Cruise through a muscle arteriole __ Ride into a muscle capillary __ Dissociate from hemoglobin __ Diffuse across RBC membrane into plasma __ Diffuse through the basement membrane of a muscle capillary __ Diffuse through muscle capillary endothelial cell __ Diffuse through interstitial fluid in the muscle __ Diffuse through muscle cytoplasm __ Diffuse through sarcolemma __ Diffuse into a mitochondrion __ Join up with H + to form water 1
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2. Answer the following questions using one or more of the following aspects of cellular metabolism. (a)
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This note was uploaded on 06/14/2011 for the course PHYI 202 taught by Professor Shea during the Summer '09 term at UNC.

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practice12 - Lesson 12 Practice Set Respiratory Physiology:...

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