Key term for Edexcel GCSE Biology, used in The Circulatory System.
Small, one-cell-thick blood vessels where the exchange of substances (like oxygen and glucose) occurs between blood and tissues.
Capillaries appears in Edexcel GCSE Biology revision content for Exchange and Transport in Animals, especially The Circulatory System and Heart and Circulatory System.
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Exchange and Transport in Animals
Exchange Surfaces • Factors Affecting Diffusion
