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Which of these structures is present in both non-myelinated and myelinated neurons?
- a)Myelin forming Schwan cells
- b)Myelin sheath
- c)Nodes of Ranvier
- d)Nissl’s granules
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which of these structures is present in both non-myelinated and myelin...
Non-myelinated neurons lack myelinated axons. Hence, myelin forming Schwan cells, which surround and form myelin, are absent. Nodes of Ranvier are also absent as they are the points between two adjacent myelin sheaths.
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Which of these structures is present in both non-myelinated and myelin...
Key Structure Present in Both Non-myelinated and Myelinated Neurons: Nissl's Granules
Nissl's granules, also known as Nissl bodies or Nissl substance, are specialized structures found in the cell bodies of neurons. These granules play a crucial role in protein synthesis and are particularly abundant in neurons due to their high metabolic activity.
Differences Between Non-myelinated and Myelinated Neurons:
- Non-myelinated neurons: These neurons lack a myelin sheath, which is a fatty substance that insulates the axons of some neurons. As a result, the transmission of nerve impulses in non-myelinated neurons is slower compared to myelinated neurons.
- Myelinated neurons: These neurons have a myelin sheath, which helps to speed up the transmission of nerve impulses by allowing the action potential to 'jump' between nodes of Ranvier.
Presence of Nissl's Granules:
- Nissl's granules are present in both non-myelinated and myelinated neurons. These granules are essential for the synthesis of proteins that are needed for the proper functioning of the neurons.
- While myelinated neurons have a myelin sheath that speeds up nerve impulse transmission, the presence of Nissl's granules remains consistent in both types of neurons.
In conclusion, Nissl's granules are a key structure found in both non-myelinated and myelinated neurons, playing a crucial role in protein synthesis and overall neuronal function.
Nissl's granules, also known as Nissl bodies or Nissl substance, are specialized structures found in the cell bodies of neurons. These granules play a crucial role in protein synthesis and are particularly abundant in neurons due to their high metabolic activity.
Differences Between Non-myelinated and Myelinated Neurons:
- Non-myelinated neurons: These neurons lack a myelin sheath, which is a fatty substance that insulates the axons of some neurons. As a result, the transmission of nerve impulses in non-myelinated neurons is slower compared to myelinated neurons.
- Myelinated neurons: These neurons have a myelin sheath, which helps to speed up the transmission of nerve impulses by allowing the action potential to 'jump' between nodes of Ranvier.
Presence of Nissl's Granules:
- Nissl's granules are present in both non-myelinated and myelinated neurons. These granules are essential for the synthesis of proteins that are needed for the proper functioning of the neurons.
- While myelinated neurons have a myelin sheath that speeds up nerve impulse transmission, the presence of Nissl's granules remains consistent in both types of neurons.
In conclusion, Nissl's granules are a key structure found in both non-myelinated and myelinated neurons, playing a crucial role in protein synthesis and overall neuronal function.
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Which of these structures is present in both non-myelinated and myelinated neurons?a)Myelin forming Schwan cellsb)Myelin sheathc)Nodes of Ranvierd)Nissl’s granulesCorrect answer is option 'D'. Can you explain this answer?
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