blood vessels and their structure

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hesi, mometrix

Last updated 6:53 PM on 7/29/26
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5 Terms

1
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elastic arteries

  • includes the aorta and major branches

  • tunica media has more elastin than any other vessels

  • largest vessels in the arterial system

2
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muscular arteries

  • includes the arteries that branch off of the elastic arteries

  • tunica media has a higher proportion of smooth muscle cells, and fewer elastic fibers as compared to elastic arteries

3
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arterioles

  • tiny vessels that head to the capillary beds

  • tunica media is thin, but composed almost entirely of smooth muscle cells

4
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venules

  • tiny vessels that exit the capillary beds

  • thin, porous walls

  • few muscle cells and elastic fibers

5
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veins

  • thin tunica media and tunica intima

  • wide lumen valves prevent black flow of blood