Question
State the biological significance of the thick muscular walls and narrow lumen in arteries.
Answer
To maintain high blood pressure.
The thick muscular walls of arteries allow them to contract and relax, regulating blood pressure. When the muscles contract (vasoconstriction), the lumen narrows, increasing blood pressure. Conversely, when the muscles relax (vasodilation), the lumen widens, lowering blood pressure.
The thick muscular walls of arteries allow them to contract and relax, regulating blood pressure. When the muscles contract (vasoconstriction), the lumen narrows, increasing blood pressure. Conversely, when the muscles relax (vasodilation), the lumen widens, lowering blood pressure.
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