Pressure and Flow in Arteries and Veins Flashcards
1
Q
What do elastic arteries act as?
A
Pressure reservoir which damps down pressure variations
This can be done due to the many elastic fibres
2
Q
What is the pressure wave affected by?
A
Stroke volume, velocity of ejection and elasticity of arteries and TPR
3
Q
What is normal arterial pressure?
A
120/80mmHg
4
Q
What happens to arterial pressure with age?
A
Increases
5
Q
What happens to pressure as you move through the vascular tree?
A
Decreases
6
Q
What is the pressure in veins?
A
Low, therefore pressure gradient driving blood back to heart is low
7
Q
What affects flow in veins?
A
Gravity Skeletal muscle pump Respiratory pump Venomotor tone Systemic filling pressure
