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National 5: Biology

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Question:

Describe the reflex arc of limb withdrawal due to heat

Author: Marilyn Bob-Manuel 3ekt



Answer:

Heat receptors in the skin are stimulated by heat from cooker electrical impulse is sent up the sensory neuron to the spinal cord onece in spinal cord, elctrical impulse crosses synapse to the inter neuron, where it is processes electrical impulse crosses another synapse to a motor neuron electrical impulse travels down the motro neuron to the muscle, effector muscle in the arm contracts to carry ou the rapid automatic involunary response of moving the arm away from the heat


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