Question

paheli accidentally placed her hand over a flame and imediately pulled it back. She felt the sensation of heat and reacted due to the action of-
1 - blood cells
2 - nerve cells
3 - nucleus of cells
4 - none of these
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Answer 1

Answer:

nerve cells

Explanation:

Nerve cells sent the message of the sensation of heat to the brain and brain ordered to pull the hand at once. It happened in a fraction of a second.

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Answer 2

Answer:

Nerve cells

Explanation:

When Paheli places her hand on the flame, the impulses of heat pass through nerve cells of her hand, travel through the neurons of her arm and reach the brain.