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In a unicellular organism, the interior region of the organism is no longer in contact with the external environment. Thus simple processes of diffusion, phagocytosis, exocytosis and contact with sea water helped in exchanging the necessary molecules and nutrients. But a further increase in size and complexity of the organism lead to concentration of the pool of cytoplasm. The fluid in-between the cells was known as interstitialfluids.
These fluids, due to constant exchange of molecules between the various cells lead to changes in the internal environment which influenced the functioning of the cell. Physiology, we learnt earlier, is concerned with such basic activities as reproduction, growth, metabolism, excitation and contraction as they are carried out within the fine structure - the cells, tissues, organs and organ systems of the body. The various body systems of our body are enumerated next.
Does a piece of glass reflect more light than a piece of paper?
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Evaporation Highly volatile liquid wastes could be disposed of by effective ventilation. Example : Diethyl et-her. Moderately volatile liquid wastes can be absorbed on
Food allergies: Food allergies are different from food fads. Certain fds seem to have strange reactions on some people. Probably, you have come across a person who got skin ra
Explain parasympathetic Nerves System Another system that runs parallel to the sympathetic system is termed as the parasympathetic system. This system has an effect just opposi
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Define Universal Donor and Recipients Based on the above mentioned concept, O group individuals are sometimes considered as 'universal donors ', since they have no antigens an
An aneroid barometer The corrugated rubber tube from a gas mask, or a cycle grip, can be used to make a model aneroid barometer. No huge accuracy is to be expected due to the m
Explain the Counter Current Mechanism? What is counter current mechanism? Counter current mechanism is the mechanism by which the kidneys produce osmotically concentrated urine
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