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What are the advantages of the closed circulatory system over the open circulatory system?
The closed circulatory system is more efficient. As blood circulates only inside blood vessels it can do it with more pressure reaching farther distances among the organs where hematosis occurs and the peripheral tissues. In addition the circulatory speed also heightens making possible more oxygen supply to great consuming tissues, as the muscle tissues that then can perform faster movements. Animals with an open circulatory system (with the exception of insects that do gas exchange independently from the circulation) are generally slower and have a low metabolic rate.
why should shivering contribute to heat gain in the body?
Once quite widespread throughout Asia and Africa, there has been a large reduction of the cheetah's habitat and numbers though it is still seen in widely separated areas of Africa.
Q. What are some prophylactic measures against ascariasis? The major prophylactic measures against ascariasis are: efficient washing of vegetables and other foods base sanitary
RESPIR A TIO N IN FISHES - Respiratory organs are gills. In elasmobranchi 5-7 pairs of gills present, spiracles present. In Teleostomai 4 pairs gills present, covered
Nutrients and the Soil Early experiments on mineral uptake were performed by Hoagland, Stout and Amon in 1923. They showed that minerals were taken up from the soil primarily
What is Life threatening haemorrhage Life threatening haemorrhage has been reported when a drill perforates the sublingual region of the mandible and injures the sublingual arte
Define Thin Layer Chromatography? This is an improvement over paper chromatography and uses thin layers of slurried absorbents like silica gel, alumina, cellulose, Kieselguhr,
Q What are the chloroplasts? What are the major functions of chloroplasts? Chloroplasts are organelles present in the cytoplasm of algae and plant cells, like mitochondria, chl
Q. Signs and Symptoms diabetic ketoacidosis? The following are the signs and symptoms of DKA: 1) Increased heart rate (tachycardia) 2) Low blood pressure 3) Dehydratio
Slow creeping
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