Chapter One (not in syllabus but interesting...I think!) Flashcards
0
Q
Name all seven stages of reflex action.
A
Stimulus, receptor, sensory neurone, relay neurone, motor neurone, effector, responce.
1
Q
Where are the light receptors in the eye?
A
Retina
2
Q
Name the five sense organs.
A
Eyes, nose, skin, tongue and ears
3
Q
What are the two organs in the CNS?
A
Brain and spinal cord
4
Q
In bright light what happens to the size of the pupil? Why?
A
It gets smaller to decrease the amount of light entering the eye.
5
Q
What is a reflex action?
A
An automatic and therefore rapid response to a stimulus.
6
Q
What do the receptors in our skin respond to?
A
Pressure, touch and temperature changes.
7
Q
What is a stimulus?
A
A change in the environment around us which we may need to respond to.
