During inspiration, the volume of the lungs is actively increased by the action of the diaphragm. Asthe volume of the lungs increases, the pressure within the lungs falls about 1 mmHg belowatmospheric pressure. Air rushes into the lungs due to this pressure difference.Bronchi, Bronchial Tree, and LungsLarynxPrimary bronchiSecondary bronchiTertiary bronchiBronchiolesCardiac notchPulmonary arteryTracheaPulmonary veinAlveolar ductAlveoliThis image is part of the Public Domain: https://upload.wikimedia.org/wikipedia/commons/d/db/Illu_bronchi lungs.jpgFig. 1: The bronchi, bronchial trees, and the lungs.(a) The diameter of the trachea (windpipe) is about 17 mm. What net force does the air experienceduring inhalation?F=0.03026NnetL(b) The flow rate of air entering the lungs is about 1.1.What is the velocity of air movingSthrough the windpipe?стwindpipe398.31S

a. 0.0302 Nb. 484.624 cm/sExplanation:See this solution:

Answered: During inspiration, the volume of the…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter14: Fluid Mechanics

Section: Chapter Questions

Problem 92P: The arterioles (small arteries) leading to organ constrict in order to decrease flow to the organ....

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The arterioles (small arteries) leading to organ constrict in order to decrease flow to the organ. To down organ, blood is reduced naturally to 1.00% of its original value. By what factor do the radii of the arterioles constrict?
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A medical technician is trying to determine what percentage of a patient’s artery is blocked by plaque. To do this, she measures the blood pressure just before the region of blockage and finds that it is 1.20 × 10^4 Pa, while in the region of blockage it is 1.15 × 10^4 Pa. Furthermore, she knows that blood flowing through the normal artery just before the point of blockage is traveling at 30 cm/s, and the density of this patient’s blood is 1.06 × 10^3 kg/m3. What percentage of the cross-sectional area of the patient’s artery is blocked by the plaque? Assume that gravity has negligible effect on the flow of blood. a. 30% b. 0.3% c. 25% d. 40%
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