When the hot object is touched, the pain receptors; in the skin of the finger are stimulated;
Nerve impulses are initiated and transmitted through the sensory neurone; to the grey matter;
of the spinal cord to the brain; for interpretation; the impulses are then transmitted through the
relay neurone;via a synapse; the impulses from the relay neurone are transmitted via the motor
neurone; through another synapse; to the effector; which are the biceps muscles of the upper
arm; making musclesto contract; straightening the arm; and the arm is withdrawn from the hot
object;
Kavungya answered the question on May 13, 2021 at 13:50
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