Why is the flow of signals in a synapse from axonal end of one neuron to dendritic end of another neuron but not the reverse?
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In a synapse, chemical signal is transmitted from
(d) axonal end of one neuron to dendritic end of another neuron
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What happens at the synapse between two neurons?
The neurons lie end-to-end in a chain to transmit the impulses in an animal body. There occurs a very minute gap between the terminal portion of axon of one neuron...
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Why is the flow of signals in a synapse from axonal end of one neuron to dendritic end of another neuron but not the reverse?
When an electrical signal reaches the axonal end of a neuron, it releases a chemical substance. This chemical diffuses towards the dendrite end of next neuron where it generates an...
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Joseph jogs from one end A to another end B of a straight 300 m road in 2 minutes and 30 sec
(a) For motion from A to B: Distance covered = 300 m Displacement = 300 m. Time taken = 150 sec. We know that, Average speed = Total distance covered ÷ Total time taken ...
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Explain why a charged balloon is repelled by another charged balloon whereas an uncharged balloon is attracted by another charged balloon?
charged balloon is repelled by another charged balloon because both carry same charges and we know same charges repel each other whereas an uncharged balloon is attracted by charged balloon...
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Digital signals (i) Do not provide a continuous set of values,
(c) A digital signal uses the binary (0 and 1) system for transferring message signals. Such a system cannot utilise the decimal system (which corresponds to analogue signals). Digital signals...
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Define neuron. Name the parts of neuron where :
The units which makes up the nervous system are called neurons. (i) End of dendrite tip of nerve cell. (ii) Dendrite → cell body → axon to its ends.
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Distinguish between stock and flow. Between net investment and capital, which is a stock and which is a flow?
Stock Flow 1 The variables that are measured at a particular point of time. For example, bank balance as on 1st Oct 2010 is Rs.5000. 1 The variables that are measured over an interval of...
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P, Q, R and S are four men. P is the oldest but not the poorest. R is the richest but not the oldest. Q is older than S but not than
(b) Q > S, P > Q, R > Q Age: As, Q > S, P > Q, R > Q Also, P is the oldest. ∴ P > R > Q >...
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Sky wave are not used in transmitting TV signals. Why?
A Due to high frequency of TV. signal. The signal cannot reflect back by the ionosphere B (i) by increasing the height of transmition antina (ii) by increasing the frequency of transmition
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