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2.1 Identify the type of neuron shown - NSC Life Sciences - Question 2 - 2021 - Paper 1
Question 2
2.1 Identify the type of neuron shown. 2.1.2 Using the LETTERS A, B and C, give the correct sequence for the transmission of an impulse along neuron 1. 2.1.3 Expla... show full transcript
Worked Solution & Example Answer:2.1 Identify the type of neuron shown - NSC Life Sciences - Question 2 - 2021 - Paper 1
Step 1
Step 2
Step 3
Explain how the speed of transmission of impulses will differ for neuron 1 and neuron 2.
Answer
Impulses will be transmitted faster in neuron 1 compared to neuron 2 due to the myelin sheath present in neuron 1, which facilitates rapid conduction. In contrast, neuron 2 lacks a myelin sheath, resulting in slower transmission.
Step 4
Explain why a person will feel the stimulus but will not be able to respond if only this type of neuron is damaged.
Answer
If only the motor neuron is damaged, the sensory information may still be transmitted to the central nervous system, allowing the individual to feel the stimulus. However, the motor neuron is responsible for conveying signals to the effectors (muscles or glands) for response. Without this function, the person will not be able to respond even though they feel the stimulus.