If the diameter of a blood vessel decreases due to atherosclerosis, which consequence follows regarding blood flow and pressure?

💡 Explanation

When vessel diameter decreases, resistance to flow increases. Because the body attempts to maintain constant blood pressure, decreased vessel diameter increases resistance, and therefore blood pressure rises while flow decreases, rather than either remaining constant or increasing.

• Why does an ectopic pregnancy in the fallopian tube risk maternal mortality more than tubal ligation?
• A patient with pulmonary fibrosis experiences reduced gas exchange. Why does the blood's oxygen saturation drop despite increased ventilation rate?
• Which risk increases as antidiuretic hormone (ADH) rises in the distal convoluted tubule of a renal nephron?
• A hiker in a desert environment drinks an excessive amount of water without electrolytes. Which consequence follows regarding thermoregulation?
• Why does blood pressure remain elevated after initial sympathetic nervous system activation subsides in essential hypertension?
• Why does renal tubule obstruction caused by kidney stones containing calcium oxalate crystals typically lead to hydronephrosis?