Paheli accidentally placed her hand over a flame and immediately pulled it back. She felt the sensation of heat and reacted due to the action of?

Blood cells

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Skin surface

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Nerve cells

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Nucleus of cells

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Solution

The correct option is C
Nerve cells

The correct option is C.
The explanation for the correct option:
In humans, the nervous system is so designed that when the cells are triggered by any stimulus, then the nervous system integrates immediate and involuntary responses.
Nerve cells are the basic functional units of the nervous system and they help in the transmission of information.
The information is transmitted as impulses from sense organs to motor receptors.
The explanation for the incorrect options:
Option A:
Blood cells are related to the circulatory system and not the nervous system.
Option B:
The skin surface is a part of the integumentary system.
Option D:
The nucleus of cells controls the cell machinery.
Final answer: She felt the sensation of heat and reacted due to the action of nerve cells.

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Q. Question 13
Paheli accidentally placed her hand over a flame and immediately pulled it back. She felt the sensation of heat and reacted due to the action of

(a) blood cells
(b) skin surface
(c) nerve cells
(d) nucleus of cells

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