Nerves And Hormones Flashcards
1
Q
what is a receptor
A
Receptors are a group of specialised cells, they can detect changes in the environment called stimuli and turn them into electrical impulses
2
Q
How does the nervous system work
A
Neurones with specialised jobs e.g receptors
3
Q
What are the different sense organs and what do they respond to
A
Skin - touch, pressure, pain, temp Tongue - chemicals in food Nose - chemicals in the air Ears - sound and position of the head Eyes - light
4
Q
What is a reflex action
A
Skips brain
5
Q
How does a synapse work
A
Trigger at the end of nerve ending diffuses chemical messengers across synapse
