pressure and flow in arteries and veins Flashcards
1
Q
what is pressure wave affected by?
A
stroke volume
- velocity of ejection
- elasticity of arteries
- total peripheral resistance
2
Q
what is normal arterial pressure?
A
120/80 mmHg
3
Q
does arterial pressure increase with age?
A
yes
4
Q
is low pressure good in capillaries?
A
yes because they are thin walled
5
Q
is the pressure low or high in veins?
A
low
6
Q
whats the pressure of blood flowing back to the heart like?
A
low
7
Q
venous pressure and hence venous return is affected by…
A
gravity skeletal muscle pump respiratory pump venomotor tone systemic filling pressure
8
Q
whats the effect of gravity on flow in veins
A
Does causes venous distension in legs
Causes venous collapse in neck
9
Q
what can be used to estimatecentral venous pressure?
A
height of jugular collapse
10
Q
how can arterial pressure be measured?
A
Korotkoff sounds
11
Q
when does pressure wave change
A
as it passes through the vascular tree
