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In general Autonomic tone of peripheral blood vessels increase when?
sympathetic stimulation is increased.
What does peripheral blood vessels mean?
Peripheral means "at the edge". The blood vessels further away from the heart.
What in tobacco constricts blood vessels?
Nicotine is the blood vessels' constrictor. Not all blood vessels, of course, but mainly the peripheral blood vessels, including the brain capillary blood vessels.
What is the large peripheral blood vessels into which extra-embryonic blood vessels open?
vitilline vein
Peripheral vascular diseases are disorders of the blood vessels that are located outside of the heart and brain?
Peripheral vascular disease is disease of the blood vessels of the peripheries i.e. the limbs. Atherosclerosis, how ever is a generalised disease and other vessels are also involved
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.
Is minoxidil a steriod?
No. Minoxidil is a direct acting peripheral vasodilator that reduces elevated systolic and diastolic blood pressure by decreasing peripheral vascular resistance. This means it lowers your blood pressure by increasing the circumference of your blood vessels and relaxing the smooth muscles of your blood vessels. When the blood vessels are "wider" and "pump" less hard, blood can flow with less pressure through the vessels.
What is the effects of parasympathetic stimulation on smooth muscle of blood vessels?
Nothing. The blood vessels are not innervated by the parasympathetic autonomic nervous system; only the sympathetics innervate blood vessels. Their action results in constriction of the smooth muscle in the walls of the vessels.
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.
What condition causes increased rigidity of peripheral blood vessels with age?
arteriosclerosis
What are some ailments of blood vessels?
*Blood vessel disease or Peripheral Vascular disease or Artery disease * Vasculitis
