Blood Vessels Flashcards
What happens to blood pressure as blood moves through the circulatory system?
It decreases
Which type of blood vessel carries blood Away from the heart?
Arteries for Away
What type of blood vessel carries blood back IN to the heart?
VeIN
What name is given to the cells that line the interior surface of blood vessels?
endothelium
What name is given to the inside space of a blood vessel?
lumen
From the inside of the blood vessel working out, put the following into the correct order:
a) connective tissue
b) endothelium
c) muscle and elastic fibres
b) endothelium
c) muscle and elastic fibres
a) connective tissue
Which type of blood vessel has the thick muscular elastic walls?
arteries
Which blood vessels have to cope with the highest pressure?
arteries
Which blood vessels have the larger lumen?
veins
Which blood vessels contain valves?
veins
What is the function of valves?
Keep the blood flowing in one direction/ stop the back-flow of blood
What term is given to the contracting of smooth muscle surrounding arteries causing the blood vessel to narrow?
vasoconstriction
What term is given to the relaxation of smooth muscle surrounding arteries causing the blood vessels to widen?
vasodilation
Which blood vessels allow the exchange of materials with tissues?
capillaries
What causes plasma to pass through capillary walls into the tissue fluid surrounding the cells?
pressure filtration
Why do plasma proteins not move from the capillaries into the tissue fluid?
TOO BIG
Name 2 substances that tissue fluid supplies cells with.
glucose and oxygen
Name a substance that moves from a cell into the tissue fluid to be excreted.
carbon dioxide
What happens to the majority of tissue fluid at the capillary network?
It moves back into the blood.
By what process does the majority of tissue fluid move back into the blood?
Osmosis
What happens to the excess tissue fluid?
It moves into lymphatic vessels and it returns to the circulatory system as lymph.
Name the watery yellow fluid in blood that carries glucose, amino acids, respiratory gases and plasma proteins.
Plasma
What do we call the liquid that has undergone pressure filtration and moved from the capillaries to around the cells?
Tissue Fluid
Other than location, how does tissue fluid differ from blood plasma?
Tissue fluid contains little or no protein.
What is tissue fluid called when in a lymphatic vessel?
Lymph
