Control of circulation Flashcards
1
Q
What are the ‘resistance vessels’?
Why?
A
Arterioles
Large amounts of vascular smooth muscle
2
Q
What are the ‘capacitance’ vessels?
Why?
A
Veins
Lots of blood is stored here
3
Q
Where is the MAIN place where circulation is controlled?
How?
A
In the ARTERIOLES:
- Can constrict/relax smooth muscle
- Vary diameter
- Vary resistance
- Change blood pressure
- Change flow through tissues
4
Q
What can the diameter of arterioles be regulated by?
A
- CNS control
- Local control (local factors)
5
Q
What are the various types of blood vessels?
A
- LARGE arteries/veins
- MEDIUM arteries/veins
- Arterioles/Venules
- Capillaries
6
Q
What different properties do different vessels have?
A
- Different amounts of smooth muscle
- Different amounts of elastin
