Biology-Synoptic Transmission and sight Flashcards
How do electric impulses get from one nerve to another
They transfer through through the gap between the nerves which is called the synapse
What is the order of neurone for when your body detects pain
Stimulus-skin detects change-sensory neurone-relay neurone-motor neurone-effector-response
The electric impulse travels down the axon then the dentrites which then diffuses the particles and the receptor catches he particles which stimulates the electric impulse to go down the next neurone
Is this what synoptic transmission is
Yes, but dentrites have the neuro transmitter chemical
Who does caffeine affect the nervous system
It speeds up synaptic transmission so it tells your body to do things quicker
What happens to your eye when you are looking at something near
Your ciliary muscles contract
Your suspensory ligaments loosen
Your lens goes thicker for more refraction
True or false
When you look at something near his happens
Ciliary muscles relax
Suspensory ligaments tighten
Lens goes thinner for less refraction
True
What happens in the eye when you are short sighted
Light focuses to short of the retina because your eyeball is too long
How is short sightedness corrected
You have a concave lens so light can properly focus on the retina
What happens in the eye when you are long sighted
Light focuses long of the retina because the eyeball is too short
True or false
You need a concave lens to focus light properly on the retina if you are long sighted
False you need a CONVEX lens
When does accomodation in the eye happen
When you need to focus on something near to you or far away
Why are some people colour blind
Because there is a problem which the pigments in the cones of the eye which see colour, colour blindness is usually passed down genetically
