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why is the uricotelic excretion essential for avian and reptile embryos in reptiles and birds the excretory system is uricotelic as uric acid is
comparing toxicity and the requirement for dilution in water how different are the ureotelic and the uricotelic excretions what are some examples of
why after the passage of animals from the aquatic to the terrestrial habitat does the abandonment of the ammoniotelic excretion occurammonia is a
why are most ammoniotelic beings aquatic animalsaquatic animals like crustaceans bony fishes and amphibian larvae usually are ammoniotelic since
what are the three main types of nitrogen wastes excreted by living beingsthe major nitrogen wastes excreted by living beings are ammonia uric acid
what is excretionexcretion in physiology is the method of elimination of metabolic wastes and other toxic substances from the
how is heart contraction triggered heart contraction is independent from neuronal stimulus although it can be modulated by the autonomous nervous
concerning the mixture of arterial with venous blood what is the difference between the human fetal circulation and the adult circulationin the human
how many chambers do the bird heart and the mammalian heart have concerning temperature maintenance what is the advantage of the double and complete
what is the difference between the amphibian heart and the reptile heartthe reptiles have double and incomplete circulation too three heart chambers
why is the fish circulation classified as a simple and complete circulationcomplete circulation is that in which there is no mixture of venous blood
does the fish heart pump venous or arterial bloodthe venous blood coming from the tissues enters the atrium and passes to the ventricle that then
what is the difference among double closed circulation and simple closed circulationdouble closed circulation or closed circulation is that in which
how is carbon dioxide released by cellular respiration transported from the tissues to be eliminated through the lungsin vertebrates almost 70 of the
what is the stage of cellular respiration during which carbon dioxide is liberatedin aerobic cellular respiration the release of carbon dioxide
why is carbon monoxide toxic for humanshemoglobin likes carbon monoxide co much more than it likes oxygen when there is carbon monoxide in the
what is the substance that stimulates the production of red blood cells which is the organ that secretes it under what conditions does this secretion
in high altitudes is it necessary for the blood to have more or less hemoglobinin high altitudes the air is rarefied and oxygen concentration is
what is hemoglobin f why does the fetus need a different hemoglobinhemoglobin f is the hemoglobin found in the mammalian fetus and hemoglobin a is
how different are oxyhemoglobin and hemoglobin where is it expected to find a higher concentration of oxyhemoglobin in peripheral tissues or in the
how do respiratory pigments actrespiratory pigments are oxygen-carrying molecules present in the blood when the oxygen concentration is high for
of which type of tissue is the heart made how is this tissue oxygenated and nutrifiedthe heart is made of striated cardiac muscle tissue the heart
what is the stage of the cardiac cycle during which the ventricles are filledthe filling of the ventricles with blood happens during diastolethe
is the ventricle lumen larger during systole or during diastolesystole is the stage of the cardiac cycle on which the ventricles contract so the
what is the valve that separates the aorta from the heart what is the importance of that valvethe valve among the left ventricle and the aorta is the