BOHR shift Flashcards
1
Q
what is the BOHR shift?
A
oxygen dissociation (release) from haemoglobin occurs more readily
shifts curve to the right
2
Q
what are the factors affected the BOHR shift
A
increase temperature
increase in CO2
increase in lactic acid
decrease in blood pH
3
Q
what is gaseous exchange
A
movement of gasses across a membrane
bigger gradient = faster rate
4
Q
what is partial pressure (PP)?
A
the pressure a gas exerts on another gas in a mixture of gases
at the capillaries:
high PP to low PP
5
Q
how is oxygen transported in the body?
A
- oxyhemoglobin
- blood plasma (approx 3%)
6
Q
how is carbon dioxide transported in the body?
A
- carbaminohemoglobin
- blood plasma (approx 7%)
- water (as carbonic acid)
7
Q
where does external respiration occur?
A
alveoli
8
Q
where does internal respiration occur?
A
muscle cell membrane and blood capillaries (tissues)
