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Which the following would decrease peripheral resistance to blood flow?
Peripheral resistance to blood flow can be decreased by factors such as vasodilation, which involves the widening of blood vessels. This can occur due to the relaxation of smooth muscle in the vessel walls, often influenced by factors like increased nitric oxide production, lower sympathetic nervous system activity, or the administration of certain medications (e.g., vasodilators). Additionally, a decrease in blood viscosity or an increase in blood vessel diameter can also contribute to reduced peripheral resistance.
What will happen to the resistance if the length of the conductor increase?
ERMM THE RESISTANCE INCREASES ) when longer
What does it mean to increase the host's resistance?
To transmitted the increase
Will the resistance of a copper conductor decrease with an increase in the applied voltage?
If all environmental conditions remain constant then the resistance will not change appreciably with applied voltage, but the current will increase. An increase in current will raise the temperature of the conductor which will increase the resistance somewhat.
What is periferal resistance?
Peripheral resistance refers to the resistance that blood encounters as it flows through the smaller blood vessels, primarily arterioles and capillaries, in the systemic circulation. It is influenced by factors such as the diameter of the blood vessels, blood viscosity, and the total length of the vascular system. Higher peripheral resistance can lead to increased blood pressure, while lower resistance facilitates easier blood flow. This concept is crucial in understanding cardiovascular health and conditions like hypertension.
Name two factors that increase peripheral resistance?
Peripheral resistance can be increased by an increase in blood volume and the constricting of blood vessels.
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.
How does viscosity affect peripheral resistance?
If you increase the total peripheral resistance then the arterial blood pressure will increase.
What are the factors affecting peripheral resistance which influence BP?
There are three factors that increase peripheral resistance. These factors include autonomic activity, pharmacologic agents, and blood viscosity. Each factor increases the constriction of arteries, which in turn causes peripheral resistance.
What is the explanation for the term total peripheral resistance?
Total peripheral resistance is the sum of the resistance of all peripheral vasculature in the systemic circulation.
What is main site of peripheral resistance?
arterioles offer maximum peripheral resistance .Skin and skeletal muscle blood vessels represent most imp. site of peripheral resistance.
What does alcohol do to blood vessels?
Vasodilates them. Arteries increase in diameter size, this reduces the peripheral resistance on the blood. Not necessarily a good thing.
Does exercise Change in cardiac output or in peripheral resistance?
Both, peripheral resistance decreases and cardiac output increases.
How will blood peripheral resistance change as a result of increased hematocrit?
An increased hematocrit indicates a higher ratio of RBC's in the blood. Any increase in cellular elements, whether WBC's, RBC's or platelets, will act to essentially mechanically "thicken" the blood viscosity, sort of like using a heavier grade oil in your car. Increased blood viscosity will increase peripheral resistance, as it becomes harder for the heart to circulate the thicker blood, especially in the capillaries.
Does sympathetic peripheral vasodilation increase blood volume and BP?
Sympathetic peripheral vasodilation typically leads to a decrease in blood pressure (BP) rather than an increase, as it causes blood vessels to widen, allowing blood to flow more easily and reducing vascular resistance. Consequently, this can result in a decrease in overall blood volume in the central circulation, as blood is redistributed to the peripheral tissues. Therefore, sympathetic peripheral vasodilation does not increase blood volume or BP; rather, it can lead to the opposite effect.
What causes peripheral resistance?
Peripheral resistance is the force against blood flow. In most cases, an increase in peripheral resistance would be caused by an increase in vasoconstriction, which would decrease blood flow. Other factors can influence vasoconstriction, such as circulating angiotensin II levels, cortisol levels, drugs such as cocaine and other adrenergic agonists, blood volume, atherosclerosis, emboli, renal diseases and increased intra-cranial pressure. An increase in blood pressure will also be caused by vasoconstriction and the mentioned factors.
What center in the medulla can alter peripheral resistance?
Hypothalamus
