Senses And The Nervous System Flashcards
0
Q
What is a stimulus
A
A stimulus is something that causes a response
1
Q
What is sensitivity
A
Detecting and responding to a stimulus
2
Q
What does the lens do
A
It focuses the light onto the retina
3
Q
What’s the nervous system
A
It’s the brain , spinal cord , all the nerves
4
Q
What’s the sensory nerve
A
It sends a message to the brain from the sense organ
5
Q
What’s the motor nerve
A
It sends a message from the brain to a muscle
6
Q
What are messages
A
Messages are sent along nerves as pulses of electricity
7
Q
What does the eye contain
A
The cornea , iris , lens , pupil , retina , optic nerve , and ciliary muscle
