1. The curve decreases between 100 & 40 mm Hg PO₂. What does this mean? in terms of hemoglobin's (Hb) oxygen releasing a

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1 The Curve Decreases Between 100 40 Mm Hg Po What Does This Mean In Terms Of Hemoglobin S Hb Oxygen Releasing A 1 (76.58 KiB) Viewed 75 times

1 The Curve Decreases Between 100 40 Mm Hg Po What Does This Mean In Terms Of Hemoglobin S Hb Oxygen Releasing A 2 (73.43 KiB) Viewed 75 times

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1. The curve decreases between 100 & 40 mm Hg PO₂. What does this mean? in terms of hemoglobin's (Hb) oxygen releasing ability? a. hemoglobin (Hb) has given up 60 0₂ molecules to tissue b. the % saturation of Hb has decreased c. Hb has given up 1 0₂ molecule to tissue d. B and C 2. At what PO₂ is Hb 75% saturated with O₂? are bound to an individual Hb molecule at this point? How many O₂ molecules 3. In the lungs PO₂ is 104 mm Hg. thus the Hb of deoxygenated blood becomes fully saturated with O₂. Body tissue exhibits a PO₂ of 40 mm Hg. When the oxygenated blood reaches the tissues it gives up % of its oxygen. 4. What effect does an increase in temperature, a decrease in pH, and an increase in carbon dioxide have on Hb's ability to give up oxygen? a. O₂ is given up to muscle tissue b. O, is retained and not given to muscle tissue c. these factors haven't been shown to affect Hb function.
The diagram below represents the oxygen dissociation curve for hemoglobin. This graph shows the degree to which hemoglobin combines with O₂ under various partial pressure (PO₂) conditions. In general, O₂ diffuses from areas of higher PO, to areas of lower PO₂. As the graph indicates, at low PO₂ of blood little O₂ enters the RBC and becomes bound to hemoglobin; however, as the PO₂ of the blood increases, greater amounts of O₂ bind to hemoglobin. Note: arterial blood has a PO2 of 95 mm Hg. % saturation of hemoglobin 100 90 80 70 60 50 40 30 20 10 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 Po₂ (mm Hg) Oxyhemoglobin dissociation at 38°C
5. What would a body be doing to experience an increase in temperature, a decrease in pH, and an increase in carbon dioxide?