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Why is the skin of the frog suitable as a minor respiratory organ?
The skin of a frog is suitable as a minor respiratory organ because it is thin and moist, allowing for oxygen and carbon dioxide exchange to occur directly through the skin. The capillaries near the skin surface help facilitate gas exchange, making it an efficient way for frogs to breathe, particularly when they are underwater or in environments with low oxygen levels.
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).
Is bump onomatopoeia?
No this is not onomatopoeia as this is something you do.
What chemical test can be made to identify limestone?
One common chemical test to identify limestone is the acid test. Limestone will react with hydrochloric acid to produce bubbles of carbon dioxide gas. Another test involves applying a drop of dilute hydrochloric acid to the surface of the rock; if it fizzes, then it likely contains calcium carbonate, the main component of limestone.
What is difference between suture and sulcus?
Suture is a fibrous connective tissue joint between two or more structures (e.g. bones in the brain). For example, there is a sagittal suture between the two parietal bones of the skull. Sulcus is the fissure on the surface of the brain which surrounds the gyri. For example, there is a central sulcus which separates the frontal and parietal lobes of the cerebral cortex.
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.
How do the capillaries adjust to changes in temperature?
Capillaries adjust to changes in temperature primarily through the process of vasodilation and vasoconstriction. In response to increased temperatures, capillaries dilate, allowing more blood to flow to the surface of the skin, facilitating heat loss through radiation and convection. Conversely, in colder temperatures, capillaries constrict to reduce blood flow to the skin, helping to conserve body heat. This dynamic adjustment helps maintain overall body temperature homeostasis.
What is the respiratory surface for protists?
the respiratory surface for protists is the alveolis and capillaries
What is the controlling factor in very fast heterogeneous reaction?
In very fast heterogeneous reactions, the controlling factor is typically the rate of mass transfer of reactants to the reaction surface, rather than the intrinsic chemical reaction rate at the surface. This is because the reaction rate is limited by how quickly reactants can reach the surface and participate in the reaction. Improving mass transfer, for example by increasing surface area or stirring the system, can enhance the overall reaction rate.
What percentage of the alveolar surface is covered with pulmonary capillaries?
99%
Which vessels in the human body have the biggest surface area?
Capillaries
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 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.
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.
What role do the capillaries play in gaseous exchange?
Capillaries are very thin and form almost web like structures. Because of how thin they are, they have a favorable surface area to volume ratio. Capillaries increase the surface area available for gas to diffuse into the blood. More suface area leads to more gas exchange.
