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medical terminology
Cardiovascular System
10
Medical
Not Applicable
10/11/2012

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Term
HEART
Definition
Hollow muscular organ lying in the mediastinum
Term
ARTERIES
Definition
Vessels that carry blood away from the heart to the rest of the body
Term
VEINS
Definition
Vessels that carry blood to the heart from the rest of the body
Term
CAPILLARIES
Definition
Microscopic blood vessels; link between arteries and veins
Term
LAYERS OF ARTERIES AND VEINS
Definition
Tunica Externa-tough outer coat of connective tissue for strength and flexibility
Tunica Media- layer of smooth muscular tissue
Tunica Intima- thin inner lining composed of endothelial cells.
Term
VASODIALATION
Definition
Smooth muscle of vessel relaxes
Term
VASOCONSTRICTION
Definition
Smooth muscle of vessel contracts
Term
PULSE
Definition
Surge of blood felt in the arteries when the heart pumps blood into them
Term
ARTERIAL BLOOD
Definition
Contains a high level of oxygen
Term
ARTERIOLES
Definition
Smallest arteries
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