Question

Briefly state the event that proceeds a stimulus in organisms.

Answer 1

• The first event begins with the receptor detecting a stimulus from a sensory organ. The stimulus could be in the form of pressure, temperature or chemicals.
• This is followed by the sensory neuron sending a signal to the relay neuron.
• The relay neuron then sends the signal to the motor neuron.
• The motor neuron sends a signal to the organ or a cell that acts to the stimuli called the effector.
• Finally, the effector produces an instantaneous response, such as a knee-jerk reaction.