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When a duck dives into cold water the capillaries in its skin constrict and move deeper below the surface of the skin This reaction is an example of?
Wiki User
∙ 10y ago
It's more likely that the answer is homeostasis because, homeostasis helps the body maintain it's daily function (ex; body temperature). The answer is homeostasis
Wiki User
∙ 10y ago
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How do some animals control their body temperature?
Some animals control their body temperatures by sweating or panting. Others use behavioural means, such as going into the shade and reducing physical activity. Some animals have capillaries close to the surface of their skin, which helps to cool their blood (animals such as kangaroos lick the surface above these capillaries to increase the effect).
What is cutaneous gas exchange?
The process by which an animal can breathe without lungs ie. through moist skin. Oxygen can pass through the skin into the blood capillaries close to the skin surface. Examples are amphibians, specifically the 'lungless salamanders'.
What chemical test can be made to identify limestone?
Limestone will lightly fizz when vinegar is applied to the surface, from the reaction of the acid with the calcium carbonate in the stone.
Superior surface of foot?
The superior surface of the foot is also called the dorsal surface or the dorsum pedis.
Through which organ do fish get oxygen?
Those would be the gills. which are composed of many filaments. Gill filaments have rows of thin, vertical lamellae with many capillaries covered by a single layer of cells. Gills are really thin.
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.
How do capillaries help control the amount of heat lost from the body?
They dilate at the surface of the skin to release heat into the atmosphere, and they can also constrict to reduce heat loss through the skin.
What is the respiratory surface for protists?
the respiratory surface for protists is the alveolis and capillaries
Which vessels in the human body have the biggest surface area?
Capillaries
What percentage of the alveolar surface is covered with pulmonary capillaries?
99%
Why does Scratching skin causes blood to surface?
If you scratch your self to hard you cause the capillaries in your skin to break. Capillaries are the smallest of all blood vessels and when broken cause the blood to surface.
Rusting of iron is an example of?
Oxidation.Rust is an example of an oxidation reaction between iron and oxygen. This is why a coat of oil on iron-containing metal prevents rust--the oil stops oxygen from reaching the metal's surface so that the oxidation reaction cannot take place.
Why must capillaries have a greater surface area to volume ratio compared to arteries?
Capillaries are tiny blood vessels. They need to have a greater surface area to volume ratio because they need to diffuse oxygen quicker.
Why does surface area of a reactant influence the rate of the of the reaction?
by pooing on the leg
What is difference between capillaries and veins?
Capillaries are smaller, thinner and have less surface area than veins. Veins take blood to the heart, and capillaries are the thin tubes that connect the veins and arteries together.
Why is capillaries branched out?
The capillaries are branched out to increase surface area for diffusion of substances like nutrients, hormones, and waste products like carbon dioxide.
Why is the velocity of blood flow the lowest in capillaries?
the total surface area of the capillaries is larger than the total surface area of the arterioles
