I don’t really understand how the reflex arc works.

Receptors in the skin detect a stimulus (which is a change in environment, for example an increase in temperature when you touch a hot pan). Sensory neurones (a nerve cell which sends electrical impulses from receptors in the sense organs to the central nervous system) send impulses to the relay neurone (a nerve cell which sends electrical impulses from the sensory neurone to the motor neurone) which sends impulses to the effector (e.g a muscle). The effector produces a response, in this case contracting to cause the hand to move away.

FN
Answered by Faiza N. Biology tutor

2271 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Describe why diffusion is important in plants and animals


What does the mitochondria do?


Why might a person with coeliac disease have poor growth?


Describe how the ancestors of modern lemurs may have evolved into the species shown in Figure 14. (June 2018, 5 marks)


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences