Describe how the structures involved in a reflex action help co-ordinate a reflex: (image with receptor, effector, spinal cord, synapse and neurones)

A receptor detects a stimulus e.g. pressure. The receptor generates electrical signals. Neurones conduct impulses, a sensory neurone conducts to the spinal cord. There is a synapse between the neurones and the chemical neurotransmitter crosses the synapse. The neurotransmitter stimulates an impulse in the relay neurone. The relay neurone carries the impulse to the motor neurone which acts on the effector. The effector then carries out a response e.g. a muscle would contract/ a gland would release it’s hormone.

PA
Answered by Pareya A. Biology tutor

3825 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Describe the basic structure of a DNA and complementary base pairing.


What are the adaptations of alveoli to increase gas exchange?


What are the main similarities and differences between DNA and RNA?


Describe the process of breathing.


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