Senses And The Nervous System Flashcards
1
Q
Sensitivity
A
Detecting and responding to a stimulus
2
Q
Stimulus
A
Is something that causes a response e.g a loud noise stimulates me to jump
3
Q
Lens
A
Focuses the light onto the retina
4
Q
Iris
A
Controls the amount of light entering the eye
5
Q
Cornea
A
Allows light through
6
Q
Pupil
A
The hole that allows light through
7
Q
Ciliary muscle
A
Changes shape of the lens for focusing
8
Q
Retina
A
Contains the light sensitive cells
9
Q
Optic nerve
A
Carries messages,to the brain
10
Q
Nervous system
A
Brain,spinal cord ,all the nerves
11
Q
Sensory nerve
A
Sends a message to the brain from the sense organ
12
Q
Motor nerve
A
Sends a message from the brain to a muscle
13
Q
Messages
A
Are sent along nerves as pulses of electricity
14
Q
The eye contains
A
The cornea ,iris,lens,pupil,retina,optic nerve and the ciliary muscle
