Measurements of oxygen binding by whok human blood, at 37 °C, at pH 7.4, and in the presence of 40 mm Hg of CO, and normal physiological lkvels of 2,3-BPG (5 mmol/L of cells), give the following: Po, (mm Hg) % Saturation (=100 x Yo) 10.6 10 19.5 30 27.4 50 37.5 70 50.4 85 77.3 96 92.3 98 (a) From these data, construct a binding curve, and estimate the percent oxygen saturation of blood at (1) 100 mm Hg, the approximate partial pressure of O, in the lungs, and (2) 30 mm Hg, the approximate partial pressure of Oz in venous blood. (b) Under these conditions, what percentage of the oxygen bound in the lungs is delivered to the tissues? (c) Using the data in Figure 7.27, repeat the calculation of part (b) if the pH drops to 6.8 in capillaries but goes back to 7.4 as CO, is unloaded in the lungs.

Measurements of oxygen binding by whok human blood, at 37 °C, at pH 7.4, and in the presence of 40 mm Hg of CO, and normal physiological lkvels of 2,3-BPG (5 mmol/L of cells), give the following: Po, (mm Hg) % Saturation (=100 x Yo) 10.6 10 19.5 30 27.4 50 37.5 70 50.4 85 77.3 96 92.3 98 (a) From these data, construct a binding curve, and estimate the percent oxygen saturation of blood at (1) 100 mm Hg, the approximate partial pressure of O, in the lungs, and (2) 30 mm Hg, the approximate partial pressure of Oz in venous blood. (b) Under these conditions, what percentage of the oxygen bound in the lungs is delivered to the tissues? (c) Using the data in Figure 7.27, repeat the calculation of part (b) if the pH drops to 6.8 in capillaries but goes back to 7.4 as CO, is unloaded in the lungs.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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