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How do peripheral vasodilators work?
Peripheral vasodilators work by relaxing the smooth muscle in the walls of blood vessels, which causes them to dilate and widen. This leads to a decrease in resistance to blood flow, resulting in increased blood flow to the peripheral tissues. This can help reduce high blood pressure and improve circulation.
Explain why the homeostatic mechanism of decreasing peripheral blood flow is critical to survive?
Decreasing peripheral blood flow during periods of decreased blood pressure or blood volume helps to prioritize blood flow to vital organs like the heart and brain. By redirecting blood flow away from less critical areas like the skin and muscles, the body can maintain sufficient circulation to support essential functions and prevent organ damage or failure. This homeostatic mechanism is crucial for survival by ensuring that vital organs receive adequate oxygen and nutrients to sustain life.
How does the relationship between blood pressure, cardiac output, and peripheral resistance impact overall cardiovascular health?
The relationship between blood pressure, cardiac output, and peripheral resistance is crucial for overall cardiovascular health. Blood pressure is the force of blood against the walls of the arteries, which is influenced by cardiac output (the amount of blood pumped by the heart) and peripheral resistance (the resistance to blood flow in the blood vessels). When these factors are balanced, it helps maintain healthy blood pressure levels and proper blood flow throughout the body, supporting overall cardiovascular health. Imbalances in these factors can lead to conditions like hypertension or heart failure, which can negatively impact cardiovascular health.
How do you get peripheral artery disease and what are the risk factors associated with it?
Peripheral artery disease (PAD) is caused by a buildup of plaque in the arteries, which restricts blood flow to the limbs. Risk factors for PAD include smoking, diabetes, high blood pressure, high cholesterol, and a family history of the disease.
What is the peripheral arterial occlusive disease in which intermittent attacks are triggered by cold or stress i s known as?
The condition is known as Raynaud's disease. It is a disorder that affects blood flow to the extremities, causing them to feel cold and numb. Triggers like cold temperatures or stress can lead to episodes of restricted blood flow and color changes in the fingers and toes.
What is the indicator of peripheral blood flow?
Strength of pulses is one clinical indicator of peripheral blood flow. Another is capillary refill time.
How does blood viscosity affect blood flow?
Peripheral resistance
What decreases peripheral resistance to blood flow?
Vasodilation and decreasing blood viscosity
What would decreased peripheral resistance to blood flow?
Vasodilation and decreasing blood viscosity
How do salicylates lower body temp?
Decreasing peripheral blood flow
How do peripheral vasodilators work?
Peripheral vasodilators work by relaxing the smooth muscle in the walls of blood vessels, which causes them to dilate and widen. This leads to a decrease in resistance to blood flow, resulting in increased blood flow to the peripheral tissues. This can help reduce high blood pressure and improve circulation.
Decreased peripheral resistance to blood flow?
Decreased peripheral resistance to blood flow is typically associated with vasodilation, which occurs when the smooth muscle in blood vessel walls relaxes. This can lead to increased blood flow to tissues and decreased blood pressure. Vasodilation can be caused by factors such as the release of nitric oxide or certain medications.
What is blood flow directly proportional to?
Blood flow is directly proportional to blood pressure, vessel diameter, and heart rate. When these factors increase, blood flow also increases, and vice versa.
A resistance to blood flow due to friction between blood and blood vessel walls is called what?
it is called peripheral resistance.
Would vasoconstriction decrease peripheral resistance?
No, vasoconstriction would increase peripheral resistance. When blood vessels constrict, the diameter of the blood vessels becomes smaller, which increases resistance to blood flow. This can lead to an increase in blood pressure.
Whats the function of valves in the peripheral veins?
Valves in the peripheral veins prevent blood from backflow during the off beat of the heart. If not for the valves, the flow of blood would tend to pool at the extremities.
What is a peripheral vascular bypass?
A peripheral vascular bypass, also called a lower extremity bypass, is the surgical rerouting of blood flow around an obstructed artery that supplies blood to the legs and feet.
