Lecture 5: Factors Affecting Blood Flow Flashcards
1
Q
Increased flow can itself allow dilatation to accommodate increase in flow, what is this called?
A
Flow-mediated vasodilation.
2
Q
What is transmural pressure?
A
The pressure exerted across the vessel wall.
3
Q
What is active hyperaemia?
A
The increase in blood flow when metabolism increases.
4
Q
If you increase transmural pressure, the vessel contracts, what is this due to?
A
Myogenic tone.
5
Q
Does destroying the endothelium affect myogenic tone or flow-mediated vasodilation?
A
Flow-mediated vasodilation.
6
Q
What is released from the endothelium during flow-mediated vasodilation?
A
Nitric oxide.
7
Q
Adenosine is involved in which type of flow regulation?
A
Re-active hyperaemia.
8
Q
Myogenic autoregulation is stimulated by what?
A
Pressure and flow.
