Rete Capillaries Flashcards
1
Q
Afferent = ____
A
in
2
Q
What does lactate cause?
A
- salting out of CO2, N2, O2
3
Q
What 3 effects does H+ have?
A
- root off effect
- bohr shift
- combine with HCO3 to make CO2
4
Q
What does H+ do?
A
- shifts gas partial pressure gradient
5
Q
What does the root off effect do?
A
- decreases Hb-O2 carrying capacity
6
Q
What does efferent mean?
A
out
7
Q
What does efferent movement cause?
A
- slow root on effect
8
Q
What does the 10 s delay on the root effect do?
A
- restores Hb-O2 affinity
- ensures PO2 sufficiently high to maintain efferent to afferent capillary gradient
9
Q
What can the counter current multiplier effect achieve?
A
- can achieve gas partial pressures up to 300 atmospheres (10m per atm)
10
Q
What is counter current multiplier effect?
A
- diffusion of gases from venous (efferent) to arterial (afferent) capillaries ensures high gas partial pressure at swim bladder
11
Q
Longer capillaries = ____ gas unloaded
A
- more
