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Water loss during excretion
In terrestrial animals body water is also lost during excretion of nitrogenous wastes. A number of physiological adaptations have taken place to minimise the loss of water associated with this phenomena. You have learnt in the previous Unit that among terrestrial invertebrates, insects are highly effective in conserving water.
In terrestrial vertebrates, kidney is the chief organ of osmoregulation and excretion. The loop of Henle is the specialised part of the nephron which produces hyperosmotic urine. Amphibians and reptiles which are unable to produce a hyperosmotic urine, as an adaptive consequence, cease urine production entirely during the period of osmotic stress.
Variety of Locomotion A number of animals are sendentary, remaining attached to some substratum. These animals may move parts of their body but this does not result in the mov
Q. Give Choice of Catheters for Ventriculography? 1) Pigtail Catheter: This catheter developed by Judkins has end hole and side holes. The end hole permits insertion of the c
Explain Some Functions of Riboflavin? Protective role: Riboflavin protects the octodermal tissues and prevents lesions of the skin, eye and nervous system. Riboflavin amelior
Collection of Cerebro-spinal Fluid (CSF) Examination of the CSF is one of the most useful laboratory procedures in neurological diagnosis. Four types of punctures ma
Q. What do you mean by Transition Period? The transition period from the Renaissance to the Modern period produced many notable workers and much literature. Botanists gradually
Craninal nerves: Cranial nerves take their origin from different areas of brain Some of them are sensory, some are motor and a few are mixed nerves. There are 12 pair
What is Active Transport--Secretion This method is now a well accepted process of aqueous formation. The rate of aqueous humour formation depends on the rate of active solute
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What are the Materials required for Radiographic 1. Alginate impression material. 2. Silicone separating spray/ petroleum jelly 3. Autopolymerizing PMMA (Clear)
Define Chromium Toxicity? Trivalent chromium, the form of chromium found in foods and supplements, is least toxic. Oral supplements upto 800 to 1000 mcg per day appear to be sa
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