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Chapter 20: Blood Vessels
Lecture Outline Cards for Ch20
7
Anatomy
Undergraduate 1
10/27/2016

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Term
Name the layers of the wall of blood vessels, what tissues they're made of
Definition
[image]
1. tunica intima (2 layers)
-endothelium (simple squamous ept. lining lumen)
-subendothelium (LCT)

2. tunica media made up of smooth muscle and CT (elastic and collagen fibers)

3. tunica externa made up of LCT (the thickest layer in vein)
Term
What's the purpose of arteries?
Definition
blood vessels carry blood AWAY from heart(usually oxygenated)
Term
What are the 3 types of arteries?
Definition
[image]
Elastic (aka conducting arteries)
Muscular
Arterioles
Term
What are elastic arteries?
Definition
-largest arteries near the heart (ex. aorta & major branches)
-have a thick tunica media because of abundance of elastic tissue
Term
What are muscular arteries?
Definition
-supply blood from the arteries to the organs
-smooth muscle in tunica media is well developed
Term
What are aterioles?
Definition
-contains only 1-2 layers of smooth muscle in tunica media
-regulates blood pressure
Term
What are capillaries?
Definition
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