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Dilated capillaries are also known as broken blood vessels. When several capillaries come together they appear red or similar to a bruise. They are common on the legs.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoCapillary dilation is the increase in diameter in the smallest blood vessel. One function of dilation is to release excess heat at the surface of the skin.
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What would not result in the dilation of the feeder arterioles and opening of the precapillary sphincters in systemic capillary beds?
a local increase in pH
What is the triple response of intradermal injection of histamine?
On intradermal injection of histamine the following three reaction occurs 1. Red spot formation - due to intense capillary dilation 2. Wheal formation -due to exudation of fluid from capillaries and vanules 3. Flare formation - due to arteriolar dilation mediated by axon reflex
Why does arteriole dilation increase capillary pressure and flow but venous dilation does not?
Blood flow in the circulatory system is as follows: arteries->arterioles->capillaries->venules->veins. if you dilate the arteriole you are in fact lowering the resistance of the vessel (Poiseuille's Law), and it follows that net flux will increase. If capillary resistance remains the same, but the net flux has increased, then there will be an upwards change in pressure (Ohm's law). As far as veins go, it has a high compliance, which means that it can store large amounts of blood without raising venal pressure. If your question asked whether or not capillary pressure increases when venous dilates then the answer is no. Capillary blood flow will be less restricted as they flow into venules->vein and therefore will not have an increased pressure. If the question asked whether or not the venal pressure increases, then the answer is yes, but it is negligible (it has high compliance).
What Term means the expansion of?
Dilation
What is the procedure for dilation of the kidney?
The procedure for dilation of the kidney?
Does an enlargement of a photograph represent a dilation or a rotation?
Dilation
What is basal dilation?
Basal dilation is when you perform dilation on an organism while it is at basal level. That is when its level of activity is low.
What is the most common external type of bleeding?
Capillary
What is the opposite of dilation in math?
The opposite of dilation in math is contraction
Which is thicker an artery or a capillary?
a capillary
How do you dilate by .50 with (66)?
Dilation (or enlargements require a centre of dilation (or enlargement). Since none has been given, no dilation is possible.
What is ateriole dilation?
Arteriole dilation is an increase in the diameter of a small artery.
