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Flashcards in gas transport Deck (11)
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1

respiratory and circulatory systems contain unique anatomical and physiological properties to facilitate gas diffusions, what are these?

- large SA
- large partial pressure gradient
- gasses with advantageous diffusion properties

2

oxygen is carried in the blood in 2 forms, what are these?

- dissolved
- bound to haemoglobin

3

amount of dissolved oxygen in blood is proportional to what?

partial pressure

4

what is the major transport molecule for oxygen in RBC?

haemoglobin

5

describe the structure of haemoglobin?

4 haeme groups (iron porphyrin compound) joined to globulin protein (2 alpha and 2 beta chains)

6

what is used to measure oxygen saturation?

pulse oximeter

7

what is the respiratory exchange ratio?

ratio of expired CO2 to oxygen uptake

8

what is a normal respiarory exchange ratio?

0.8

9

CO2 is carried in 3 forms, what are they?

- dissolved
- bound to haemoglobin
- as bicarbonate

10

a build up of bicarbonate in RBCs causes what?

inhibition of CO2 production

11

what shape is the oxygen dissociation curve?

s shaped