Unformatted text preview: Varicose veins: dilated, swollen, painful veins. Impairing valve function, standing, inactivity. Capillaries: Continuous (complete endothelial tissue). Fenestrated (perforated endothelial lining) Blood-brain barrier: prevents all but most vital molecules from entering the brain. Hepatic portal system: Ÿ Portal = connecting two capillary beds (digestive organs, sinusoids of liver) Ÿ nutrient rich, deoxygenated blood (processing, storage)...
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- Spring '07
- Capillary, Blood vessel, Tunica media