Expand your horizons with the diverse and informative answers found on IDNLearn.com. Discover in-depth and reliable answers to all your questions from our knowledgeable community members who are always ready to assist.

Arrange the following events in the proper sequence:

1. Efferent neuron graded potential reaches threshold and fires an action potential.

2. the graded potential in the afferent neuron reaches threshold and fires an action potential.

3. Target organ responds.

4. the electrical signal reaches the CNS. CNS makes a proper response.

5. A sensory receptor receives a stimulus.