Sense Organs Flashcards
What is the Retina in the eye?
The inner layer of the eye which contains the receptor cells that are sensitive to light. These cells are called rods and cones.
What type of light are rods sensitive to?
Dim light/black and white images.
What type of light are cones sensitive to?
Colour and details.
What is the fovea/yellow spot?
The most sensitive part of the retina.
What is the blind spot?
The point in the retina where the optic nerve attaches (no light sensitive cells).
What is the optic nerve?
What carries the nerve impulses away from the eye to the brain.
What is the vitreous humour?
A transparent, jelly like substance which supports the back of the eye.
What is the choroid?
The black layer in the eye containing lots of blood vessels.
What is the cillary muscle?
The muscle which changes the thickness of the lens when focusing.
What is the aqueous humour?
The watery liquid filling the front of the eye.
What is the lens?
The part of the eye which changes thickness to focus light onto the retina.
What is the iris?
The part of the eye which controls the amount of light entering.
What are the suspensary ligaments?
The part that hold the lens in place.
What is the sclera?
The tough, white protective layer around the eye.
What is the conjunctiva?
He thin layer over the cornea.
