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Unformatted text preview: b. Tunica media - thicker, composed of smooth muscle c. Tunica externa - outer layer 9. Vasoconstriction - opening (lumen) gets smaller 10. Vasodilation - lumen gets larger 11. Artery > arteriole > capillaries - tiniest, one cell thickness, (slowest blood flow), nutrient/gas/waste exchange between body tissues and capillaries 12. Hepatic portal system - filters blood from digestive organs before returning to heart...
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This note was uploaded on 04/10/2008 for the course BIOL 109 taught by Professor Mister during the Spring '08 term at UMBC.
- Spring '08