Zusammenfassung der Ressource
Transport in Man (2):
Circulatory System
- Blood Vessels
- Arteries
- Veins
- Capillaries
- function: site for
gaseous
exchange
- Physiology: Walls have no
muscles, only 1 cell thick, no
elastic tissue (to facilitate
diffusion of substances across
the walls for exchange of
materials)
- Presence of
valves: No
valves
- Diameter of lumen:
Large (relative to
diameter)
- Pressure: Reduced
as blood flows from
arteriole end to
venule end
- Heart
- Blood