Mark the parts labelled in the following diagram.

i) A-Receptor neuron B-Sensory neuron C-Motor neuron D-Relay neuron

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ii) A-Motor neuron B-Relay neuron C-Receptor neuron D-Sensory neuron

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iii)A-Motor neuron B-Receptor neuron C-Relay neuron D-Sensory neuron

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iv)A-Motor neuron B-Receptor neuron C-Sensory neuron D-Relay neuron

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Solution

The correct option is A
i) A-Receptor neuron B-Sensory neuron C-Motor neuron D-Relay neuron
The given figure represents a reflex arc. A, B, C and D in the figure represent the following:

A denotes the receptor for heat/pain

B denotes Sensory neuron

C denotes Motor neuron

D denotes Relay neuron

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Similar questions

One of the following gives the correct sequence of the components in a reflex arc. This is :

(a) Receptors $\to$ Muscle $\to$ Sensory neuron $\to$ Motor neuron $\to$ Spinal cord

(b) Receptors $\to$ Motor neuron $\to$ Spinal cord $\to$ Sensory neuron $\to$ Muscle

(d) Receptors $\to$ Sensory neuron $\to$ Spinal cord $\to$ Motor neuron $\to$ Muscle

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