The more effectiveness of chemical communication than by electrical impulses is due to:

Chemicals or hormones travel slower than electric impulses.

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Electric impulses cannot reach all the cells like chemicals which can easily diffuse to all cells.

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Electrical impulses require more ion input than chemicals.

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All of these.

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Solution

The correct option is B
Electric impulses cannot reach all the cells like chemicals which can easily diffuse to all cells.

The more effectiveness of chemical communication than by electrical impulses is because of electric impulses cannot reach all the cells like chemicals which can easily diffuse to all cells.

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why we call like the message in our body is travelled like electrical impulses is that in the form of electricity

Q. Question 21
Which of the following statements about transmission of nerve impulse is incorrect?

(a) Nerve impulse travels from dendritic end towards axonal end.
(b) At the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuron.
(c) The chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in a dendrite of another neuron.
(d) A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cells.

"The electric impulses generated by stimuli reach the synaptic knob where certain chemical substances are secreted."

Name the chemical substances referred here.

Q. Impulse transmission across an electrical synapse compared to chemical synapse is always:

What are the limitations of the nervous system in the human body?
I. The electrical impulses reach only those cells that are connected by the nervous tissue and not each and every cell of the body.
II. Cells cannot continuously create and transmit electrical impulses, once an electrical impulse is generated and transmitted, the cell will take some time to reset its mechanism and create a new electrical impulse.

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