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===Meaning===
'''Capillaries''' are very small [[blood vessel]]s that spread through the [[organ]]s to deliver the [[oxygen]] and [[nutrient]]s to individual [[Cell (Biology)|cells]].
==Key Stage 4==
===Meaning===
'''Capillaries''' are very small [[blood vessel]]s that spread through the [[organ]]s to deliver the [[oxygen]] and [[nutrient]]s to individual [[Cell (Biology)|cells]].
===Adaptations of Capillaries===
: '''Capillaries''' are just wide enough for [[Red Blood Cell|red blood cells]] to pass through.
: The walls of '''capillaries''' are only one cell thick.
{| class="wikitable"
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|[[File:CapillaryDiagram.png|center|300px]]
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| style="height:20px; width:200px; text-align:center;" |A [[diagram]] of a [[capillary]].
|}
===About Capillaries===
: '''Capillaries''' connect the [[vein]]s to the [[artery|arteries]] through [[organ]]s.
{| class="wikitable"
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|[[File:Capillary.png|center|300px]]
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| style="height:20px; width:200px; text-align:center;" |A [[diagram]] showing how [[artery|arteries]] branch out to form '''capillaries''' which then join back together to form [[vein]]s.
|}