Blood vessel

From Wikinfo

The blood vessels are used to transport blood throughout the human body. The major types of blood vessels are:

• arteries: smaller arteries are called arterioles
• capillaries
• veins: smaller veins are called venules

see also anatomy, human anatomy, cardiovascular system, circulatory system

References

• Adapted from the Wikipedia article, "Blood_vessel" http://en.wikipedia.org/wiki/Blood_vessel, used under the GNU Free Documentation License