Sensory System
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Sensory System. 1B3 Sensory System. OB30locate the main parts of the eye on a model or diagram and describe the function of the cornea , iris, lens, pupil, retina, optic nerve and ciliary muscle. front view of the eye. “white”. pupil. iris. Internet diagram. Inside of the eye. retina.

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Sensory System

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Sensory system

Sensory System


1b3 sensory system

1B3 Sensory System

OB30locate the main parts of the eye on a model or diagram and describe the function of the cornea, iris, lens, pupil, retina, optic nerve and ciliary muscle


Sensory system

front view of the eye

“white”

pupil

iris


Internet diagram

Internet diagram


Sensory system

Inside of the eye

retina

Ciliary muscle

optic nerve

cornea

pupil

lens

iris


Sensory system

the cornea allows light to enter the eye, and refracts (bends) the rays

light rays


Sensory system

the lens focuses light rays to form a clear image on the retina, where sensory cells detect the image


Sensory system

the iris contracts and relaxes in response to light conditions…

…this changes the size of the pupil, controlling the amount of light entering the eye…


Sensory system

the optic nerve brings a message to the brain about what we see


Sensory system

front view

side view

lens

lens

ciliary muscle

the function of the ciliary muscle is to contract and relax to change the shape of the lens


Sensory system

G

can you remember what’s what?

CORNEA

CLICK FOR ANSWERS

RETINA

PUPIL

OPTIC NERVE

IRIS

LENS

CILIARY MUSCLE


Sensory system

retina

ciliary muscle

cornea

optic nerve

pupil

iris

lens


Sensory system

Look at the diagram and explain what is happening


Sensory system

H/W

  • P74

  • Q 6,7,8,9.


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