Explain the importance of neurones and synapses in the reflex arc

The reflex arc is essential in producing a quick involuntary response aimed to prevent injury in an individual. In response to a stimulus (such as intense heat/fire), the sensory neuron detects this and transmits an electrical impulse to the relay neuron via a synapse with the release of neurotransmitters into the synapse. The electrical impulse is then relayed to the motor neuron via another synapse between the relay neuron and the motor neuron. The motor neuron communicates with the muscle associated with the external stimuli and via synapse and the diffusion of neurotransmitters, to produce muscle contract away from the harmful stimulus. 

Answered by Hanin R. Biology tutor

16328 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

What is homeostasis?


How would a reflex action take place?


What are two different ways cells of the body signal each other? Give an example of each.


What are the differences between osmosis and active transport?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences