Hbs 3.4 Eye

How many layers does the human eye consist of?

• 2
• 3
• 4
• 5

name the layers of the eye: 

• posterior cavity;anterior cavity
  cornea;pupil
  cilary body;optic nerve
• sclera;cornea
  iris;vitreous body
  retina;optic nerve
• retina
  sclera
  choroid 
• cornea;pupil
  sclera;iris
  retina-vitreous body

what is the sclera?

• gelatinous substance that fills eyeball
• regulator of the eye
• tough white fibrous tissue that covers most of the entire eye
• anterior transparent coat

what is the cornea?

• anterior transparent coat
• white fibrous tissue that covers most of the eye
• regulates amount of light that goes into the light

What is the iris?

• white fibrous tissue that covers most of the eye
• ciliary body
• anterior transparent coat
• regulates amount of light that goes into the light

Choroid: 

• transparent coat
• Blood supply
• eye color
• roundness of eye

Referring to the roundness of the eye: 

• Iris
• Choroid 
• Vitreous body 
• Cornea

Retina:

• delicate membrane lining the eyeball 
• respond to bright color 
• carries visual info to brain
• lines the eyelids

Rods respond to:

• dim light
• smell
• food
• Bright color 

Cones respond to: 

• Dim light 
• Food 
• Smell 
• Bright colors