veins Flashcards
1
Q
veins
A
transport blood to the heart (usually at low pressure)
2
Q
In contrast, veins receive blood that has passed through …………
blood is at ………… pressure
and must be returned to ………..
A
veins receive blood that has passed through capillary networks; blood is at very low pressure and must be returned to the heart
3
Q
The wall of the vein is relatively
what layers do veins contain
A
thin with thinner layers of collagen, smooth muscle and elastic fibres
4
Q
The lumen of the vein is much larger than that of an artery
which helps
A
ensure it is still transported efficiently as blood moves much slower
5
Q
Veins contain valves that prevent
A
the backflow of blood, helping return blood to the heart
6
Q
A
