arteries
- have a thick outer layer of longitudinal collagen and elastic fibres to avoid bulges and leaks
- have a thick wall to withstand the high pressures
- have thick layers of circular elastic and muscles fibres to help pump the blood on after each heart beat
- have narrow lumen to help maintain the high pressures
capillaries
- have a wall that consists of a single layer of thin cells so the distance for diffusion in or out is small
- have pores between cells in the wall that allow some of the plasma to leak out and form tissue fluid. Phagocytes can also squeeze out
- have very narrow lumen - only about 10um across so that capillaries fit into small spaces. Many small capillaries have a larger surface area than fewer wider ones
the three blood vessels are the Veins capillaries Arteries the arteries.
Arteries, veins, capillaries.
Capillaries are the structures that connect arteries to veins.
Arteries, capillaries, & veins.
Venules, they are smaller and thinner than veins.
Arteries, veins, capillaries.
Capillaries. They are the microscopic tubes that connect the veins and the arteries.
The branches from arteries are arterioles and then into capillaries.
Capillaries, arteries, and veins are the kinds of blood vessels.
Veins, capillaries and arteries is that they are all stops for blood.
Capillaries
Capillaries service cells, arteries and veins transport blood to and from capillaries, respectively.