Problems in Oxygen Transport Flashcards
(15 cards)
What are the problems we have in oxygen transport?
a] Carbon monoxide
b] High Altitude
What is formed when a carbon-containing compound burns?
Carbon monoxide
How many times does haemoglobin combine with carbon monoxide readily?
250 times
What is the treatment of carbon monoxide poisoning?
Administration of a mixture of pure oxygen and carbon dioxide.
What are the symptoms of altitude sickness?
An increase in the rate of the depth of breathing.
A general feeling of dizziness
What does methylene chloride do?
it forms carbon monoxide in the liver and causes increased carbon monoxide
What happens when carbon monoxide is rapidly absorbed into the blood?
it binds to hemoglobin to form carboxyhemoglobin in the red cells.
What has a higher affinity for haemoglobin, oxygen, or carbon monoxide?
carbon monoxide
How much carboxyhemoglobin do smokers have?
About 10%
At what level is there a rapid and severe deterioration?
Above 6000m
What is altitude sickness?
AS is caused by a sudden decrease in the PO2 which results from inadequate oxygen supply
What does CO do in the body?
Binds to heme iron in hemoglobin creating carboxyhemoglobin
What are the common sources of carbon monoxide?
exhaust fumes from cars
cigarette smoke
As the body acclimatizes to high altitude, the red blood cells increase by?
50% - 70%
What are the features of people who are already adapted to high altitude?
Broad chest
The heart is often larger than in a person who live in low altitude.
More haemoglobin than usual
