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In eukaryotes possibly the most rapid and complex signaling is mediated through nerve impulses. The Nerve cells (neurons) consist of a cell body with numerous projections of the plasma membrane, called as dendrites. These interact with other cells and receive information from them in the form of nerve impulses. Cell body then assimilates the information derived from a number of dendritric contacts and passes on the information as another nerve impulse down the huge axon. The axon ends at the synapse where it makes contact with the post-synaptic (target) cell. The axon is covered in places by a membranous myelin sheath, made up commonly of the lipid sphingomyelin, that acts as an electrical insulator and enabling the nerve impulses to be trnasferred over long distances sometimes more than 1 m in larger animals.
figure: Schematic diagram of a typical nerve cell.
Q. How many heart chambers does the amphibian heart have? The amphibian heart has three heart chambers such as one ventricle and two atria.
Explain periodontal ligament The absence of the periodontal ligament and the presence of osseointegration instead of the gomphosis joint leads to the difference in movement un
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heating a food sample with Benedict''s solution is a test for...
The main objectives of study of ecology are: (i) To study the distribution of biota local and geographical level. (ii) To study the interrelationship
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Determine Guidelines for Planning Balanced Diets for Elderly? The key element in planning diets for the elderly should be nutrient-based dietary guidelines, in order to reduce
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