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HHB 2.5
Arteries Capillaries & Veins
16
Biology
Not Applicable
10/23/2017

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Term
artery
Definition
blood vessel that carries blood away from the heart
Term
arteriole
Definition
branch of an artery leading to capillaries
Term
capillary
Definition
narrow, thin walled blood vessel that exchanges materials with the tissues
Term
venules
Definition
small branch of a vein
Term
veins
Definition
blood vessel that carries blood back to the heart; contains valves
Term
lumen
Definition
central channel of a tube such as blood vessel
Term
endothelium
Definition
layer of cells that lines the inner surface of blood vessels
Term
vasoconstriction
Definition
narrowing of blood vessels to reduce blood flow
Term
vasodilation
Definition
widening of blood vessels to increase blood flow
Term
pressure filtration
Definition
passage of molecules through membranes under pressure
Term
plasma
Definition
liquid component of the blood
Term
tissue fluid
Definition
fluid which bathes the cells in tissues; derived from blood
Term
osmosis
Definition
movement of water form an area of high water concentration to an area low water concentration through a selectively permeable membrane
Term
lymphatic system
Definition
systems of vessels and nodes that deals with lymph in the body
Term
lymph vessels
Definition
tiny vessels in which lymph circulates the body
Term
lymph fluid
Definition
fluid made up from tissue fluid collected into lymph vessels, which circulates the body
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