The carrying of oxygen in the blood
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The carrying of oxygen in the blood. This presentation provides information to help you with Objectives 211, 213, 215, and all the objectives related to hemoglobin. As you review this presentation independently, be sure to have your lecture notes and objectives handy.

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The carrying of oxygen in the blood l.jpg
The carrying of oxygen in the blood.

  • This presentation provides information to help you with Objectives 211, 213, 215, and all the objectives related to hemoglobin.

  • As you review this presentation independently, be sure to have your lecture notes and objectives handy.


Slide2 l.jpg

1. Fig. 23-20. Why do oxygen and carbon dioxide move in the directions indicated by the arrows? (See Obj. 211.) This figure also helps you to answer Obj. 213.


Slide3 l.jpg
Objective 215 tells you about how much of the oxygen in the blood is carried attached to the hemoglobin molecule.

  • The next slide shows a picture of hemoglobin.


3 fig 2 20 the hemoglobin molecule l.jpg
3. Fig. 2-20. The hemoglobin molecule blood is carried attached to the hemoglobin molecule.


4 it will help us understand the role of hemoglobin if we know how hemoglobin is studied in the lab l.jpg
4. It will help us understand the role of hemoglobin if we know how hemoglobin is studied in the lab.


Fig 23 21 oxygen hemoglobin saturation curve look at this table l.jpg
Fig. 23-21 Oxygen-hemoglobin saturation curve. know how hemoglobin is studied in the lab. Look at this table.


6 where did the numbers in the table come from l.jpg
6. Where did the numbers in the table come from? know how hemoglobin is studied in the lab.


7 choose a po 2 value go up to the red line then read across to the value of the saturation l.jpg
7. Choose a Po know how hemoglobin is studied in the lab.2 value, go up to the red line, then read across to the value of the % saturation.



Slide23 l.jpg
9. How do we use this curve to understand hemoglobin’s ability to deliver oxygen from the lungs to the tissues?

  • We need to know the % saturation of hemoglobin in the lungs and in the tissues.

  • We need to remember that an increase in % saturation means that hemoglobin has picked up O2. (Where did the O2 come from?)

  • We need to remember that a decrease in % saturation means that hemoglobin has released O2. (Where did the O2 go?)


10 here is fig 23 20 again what po 2 values are shown l.jpg
10. Here is Fig. 23-20 again. What Po ability to deliver oxygen from the lungs to the tissues?2 values are shown ?


11 po 2 values l.jpg
11. Po ability to deliver oxygen from the lungs to the tissues?2 values

  • Pulmonary Arteries = 40 mm Hg

  • Bloodgoesthrough pulmonarycapillaries

  • Pulmonary Veins =100 mm Hg

  • Systemic Arteries = 95 mm Hg

  • Blood goesthroughsystemiccapillaries

  • Systemic Veins =40 mm Hg


12 apply those values to this graph from fig 23 21 l.jpg
12. Apply those values to this graph from Fig. 23-21. ability to deliver oxygen from the lungs to the tissues?


13a how much of the hemoglobin lost its oxygen in going from systemic arteries to systemic veins l.jpg
13a. How much of the hemoglobin lost its oxygen in going from systemic arteries to systemic veins?


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13b. How much of the hemoglobin lost its oxygen in going from systemic arteries to systemic veins?


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14. This means that 22% of the hemoglobin loses its oxygen as it passes from the systemic arteries to the systemic veins.

  • Where does this oxygen go?


15 again fig 23 20 l.jpg
15. Again, Fig. 23-20. as it passes from the systemic arteries to the systemic veins.


16 this means that oxygen is released to cells when the per cent saturation of hemoglobin decreases l.jpg
16. This means that oxygen is released to cells when the per cent saturation of hemoglobin decreases.

  • What does it mean when there is an increase in per cent saturation of hemoglobin?

  • Where would you expect to see an increasein per cent saturation of hemoglobin?


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17. For the answer to these questions, as well as material to help you in Objectives 217-221, you need to go to your lecture notes.


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19. Fig. 23-22a shows the effect of changing the pH. Go to your notes to see the effect of changing pCO2 and [BPG].


20 fig 23 22b shows the effect of changing temperature l.jpg
20. Fig. 23-22b shows the effect of changing temperature. your notes to see the effect of changing pCO


21 how do these changes affect hemoglobin s delivery of oxygen between the lungs and the tissues l.jpg
21. How do these changes affect hemoglobin’s delivery of oxygen between the lungs and the tissues?

  • Go to your notes to find the answer to this important question.


22 what is myoglobin and what does its saturation look like l.jpg
22. What is myoglobin and what does its saturation look like?

  • The answers to these questions can be found in your notes.

  • Also, you will discover the usefulness of myoglobin as an oxygen-carrying molecule.



Slide39 l.jpg
24. How does this graph demonstrate hemoglobin’s ability to deliver oxygen from the mother’s blood to the fetus’s blood?

  • Go to your notes for the answer to this question.