HISTOLOGY
NERVOUS TISSUE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Irritablity
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Conductivity
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Either A or B
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None of the above
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Detailed explanation-1: -It is optically homogenous, elastic, colourless, jelly like, semi-transparent to transparent and semi-viscous substance. There is about 80-90% of water in protoplasm. It appears granular containing many vacuoles. It responses well to external stimuli like electric shock, heat, cold, chemicals etc.
Detailed explanation-2: -Protoplasm chemically consists of organic and inorganic substances. It contains proteins and Nitrogen containing substances in large quantities. It also contains lipids in small quantities. Inorganic substances include ions like Mg++, K+, Cl− etc.
Detailed explanation-3: -Irritability. The living protoplasm responds to stimuli, e.g. responds to light by retinal cells in the eye. It is the protoplasm’s ability to respond to stimuli, and is an aspect of life itself that disappears with cell death.