Page 310 - Biology_F5

Gas exchange and respiration

100% Foetal

% saturation of haemoglobin with oxygen 50% haemoglobin Adult

FOR ONLINE READING ONLY
haemoglobin

5
Partial pressure of Oxygen (kPa) 10

Figure 6.7: Oxygen dissociation curve for foetal and adult haemoglobin
(b) There is increased intake of oxygen equipment's operation and its role
by maternal blood due to increased in facilitating gas exchange for
haemoglobin so as to ensure a large patients.
supply of oxygen to the foetus blood. (b) Document the common respiratory
health problems.
(c) The uterine wall is highly vascularised (c) Develop a comprehensive report
(provided with blood vessels) to ensure detailing your study visit.
continuous supply of oxygen to the
foetus, as a result, the foetus loads its
haemoglobin with oxygen efficiently. Exercise 6.1

Task 6.3 1. Explain why babies can stay alive in the
Visit a health facility with an Oxygen wombs of their mothers despite the fact
concentrator or mechanical ventilator. that they are not in direct contact with
Ask for information or oberve the atmospheric air.
demonstration from the technician on 2. Briefly describe the oxygen-haemoglobin
how the equipment is used to supply dissociation curve and comment on its
oxygen to the patient. Investigate shape.
the mechanisms behind effective 3. What is chloride shift? Explain how it
gas exchange during the use of the occurs.
device. Request some information
on surveillance of health problems 4. Explain the factors that govern efficient
related to smoking and air pollution in gas exchange on the respiratory surfaces.
the respiratory system. 5. Describe the adaptations of mountain
(a) Compile a report detailing the climbers or dwellers to oxygen uptake

Form Five Student’s Book
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