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Which of the following statements is correct for ‘nodes of Ranvier’ of nerve? [2002]
- a)Neurilemma is discontinuous
- b)Myelin sheath is discontinuous
- c)Both neurilemma and myelin sheath are discontinuous
- d)Covered by myelin sheath
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which of the following statements is correct for ‘nodes of Ranvi...
Neurons are the chief functional units of the nervous system. An ordinary neuron has a soma or cyton and a long thread called axon which is enclosed in a multilayered myelin sheath, made by Schwann cells. The myelin sheath is interrupted at the spaces between schwann cells to form gaps. These gaps are called Nodes of Ranvier.
These nodes and the myelin sheath create condition that speed up the nerve impulses.
These nodes and the myelin sheath create condition that speed up the nerve impulses.
Most Upvoted Answer
Which of the following statements is correct for ‘nodes of Ranvi...
Understanding Nodes of Ranvier
The nodes of Ranvier are critical components in the structure of myelinated nerve fibers. They play a significant role in the propagation of nerve impulses through a process known as saltatory conduction.
Discontinuity of Myelin Sheath
- The myelin sheath is a protective covering that surrounds the axons of many neurons.
- At the nodes of Ranvier, this myelin sheath is interrupted.
- This discontinuity allows for the rapid transmission of electrical signals along the nerve fiber.
Role of Neurilemma
- Neurilemma, also known as the Schwann cell sheath, is present in myelinated fibers.
- While the neurilemma is found at the nodes, it is primarily the myelin sheath that is discontinuous at these points.
- Neurilemma does not contribute to the discontinuity of the myelin sheath but rather supports the axon.
Importance of Myelin Discontinuity
- The gaps created by the nodes of Ranvier facilitate the jumping of action potentials from one node to the next.
- This process significantly increases the speed of nerve impulse conduction compared to unmyelinated fibers.
Conclusion
In summary, the correct statement regarding the nodes of Ranvier is that the myelin sheath is discontinuous at these points. This structural feature is essential for efficient nerve signal transmission, making option 'B' the accurate choice.
The nodes of Ranvier are critical components in the structure of myelinated nerve fibers. They play a significant role in the propagation of nerve impulses through a process known as saltatory conduction.
Discontinuity of Myelin Sheath
- The myelin sheath is a protective covering that surrounds the axons of many neurons.
- At the nodes of Ranvier, this myelin sheath is interrupted.
- This discontinuity allows for the rapid transmission of electrical signals along the nerve fiber.
Role of Neurilemma
- Neurilemma, also known as the Schwann cell sheath, is present in myelinated fibers.
- While the neurilemma is found at the nodes, it is primarily the myelin sheath that is discontinuous at these points.
- Neurilemma does not contribute to the discontinuity of the myelin sheath but rather supports the axon.
Importance of Myelin Discontinuity
- The gaps created by the nodes of Ranvier facilitate the jumping of action potentials from one node to the next.
- This process significantly increases the speed of nerve impulse conduction compared to unmyelinated fibers.
Conclusion
In summary, the correct statement regarding the nodes of Ranvier is that the myelin sheath is discontinuous at these points. This structural feature is essential for efficient nerve signal transmission, making option 'B' the accurate choice.
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Which of the following statements is correct for ‘nodes of Ranvier’ of nerve? [2002]a)Neurilemma is discontinuousb)Myelin sheath is discontinuousc)Both neurilemma and myelin sheath are discontinuousd)Covered by myelin sheathCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statements is correct for ‘nodes of Ranvier’ of nerve? [2002]a)Neurilemma is discontinuousb)Myelin sheath is discontinuousc)Both neurilemma and myelin sheath are discontinuousd)Covered by myelin sheathCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is correct for ‘nodes of Ranvier’ of nerve? [2002]a)Neurilemma is discontinuousb)Myelin sheath is discontinuousc)Both neurilemma and myelin sheath are discontinuousd)Covered by myelin sheathCorrect answer is option 'B'. Can you explain this answer?.
Which of the following statements is correct for ‘nodes of Ranvier’ of nerve? [2002]a)Neurilemma is discontinuousb)Myelin sheath is discontinuousc)Both neurilemma and myelin sheath are discontinuousd)Covered by myelin sheathCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statements is correct for ‘nodes of Ranvier’ of nerve? [2002]a)Neurilemma is discontinuousb)Myelin sheath is discontinuousc)Both neurilemma and myelin sheath are discontinuousd)Covered by myelin sheathCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is correct for ‘nodes of Ranvier’ of nerve? [2002]a)Neurilemma is discontinuousb)Myelin sheath is discontinuousc)Both neurilemma and myelin sheath are discontinuousd)Covered by myelin sheathCorrect answer is option 'B'. Can you explain this answer?.
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Which of the following statements is correct for ‘nodes of Ranvier’ of nerve? [2002]a)Neurilemma is discontinuousb)Myelin sheath is discontinuousc)Both neurilemma and myelin sheath are discontinuousd)Covered by myelin sheathCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Which of the following statements is correct for ‘nodes of Ranvier’ of nerve? [2002]a)Neurilemma is discontinuousb)Myelin sheath is discontinuousc)Both neurilemma and myelin sheath are discontinuousd)Covered by myelin sheathCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Which of the following statements is correct for ‘nodes of Ranvier’ of nerve? [2002]a)Neurilemma is discontinuousb)Myelin sheath is discontinuousc)Both neurilemma and myelin sheath are discontinuousd)Covered by myelin sheathCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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