0
What causes capillaries to dilate during inflammatory response?
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What causes arterioles in the damaged area to dilate during the inflammatory response?
Histamine
What causes intact capillaries near an injury dilate leaking plasma blood cells causes the blood to clot?
platelets
What is the substance released during the inflammatory reaction that causes small blood vessels to dilate?
Histamine
What is the substance released during the inflammatory reaction that causes small blood vessels to dilate is?
Histamine
What vessels cant constrict and dilate?
Capillaries
Intact capillaries near an injury dilate?
Plasma
What is the function of the histamine?
Histamine is a chemical mediator. These are released by mammalian cells and effect their cells in their immediate vicinity. Histamines are released from white blood cells in the airways, they are released in response to injury or an allergen. They cause small arteries and arterioles to dilate and the permeability of capillaries to increase. They produce an inflammatory response where swelling, itching and redness occurs.Histamines are what causes allergic reactions in people. They can cause hives, itchy skin, runny or stuffy nose and watery eyes.
Do capillaries constrict and dilate?
No. They are vessels composed of epithelial cells (endothelium) which contain no contractile material. However, at their site of origin they contain sphincters (precapillary sphincters) that controls the flow of blood that enters the capillaries.
Why does the veins constrict and dilate during exercise?
Almost all the veins and arteries constrict and dilate during heavy exercise. Even capillaries bring a flush to the face and skin by dilation.
Why do veins dilate?
Veins contract and expand in response to blood pressure.
Why does your ears get hot?
Because the rest of your body is feeling hot. When you feel hot, the capillaries (small blood vessels) in your ears dilate, or spread out, so that more heat can escape from the blood. Sometimes, when you feel embarrassed, your body is under stress, from muscle action and various substances released from your glands due to your body's reaction to that emotion. This causes the same thing as when you feel hot to happen, and your capillaries in your ears, and sometimes your face, dilate, causing a rush of warm blood to reach those areas.
What does consolidation mean regarding pneumonia?
When an acute inflammatory response against an alveolar infection occurs, alveolar capillaries dilate causing hyperemia, followed by exudation of fluid and emigration of neutrophils from the capillary into the alveoli.Thus, the air spaces become filled with inflammatory exudate, causing the affected lung to become airless. This is called consolidation.In fact, the standard medical dictionary states it as the process of becoming solid, as the changing of lung tissue from aerated and elastic to firm in certain diseases. But regarding pneumonia, this compact mass that forms and blocks the airspace is consolidation.
