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level 3 animal biology > structure and function of the eye > Flashcards

structure and function of the eye Flashcards

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1
Q

what collects information to help the brain process an image?

A

sensory receptors

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2
Q

what transmits an impulse that creates an image from receptors to the CNS?

A

sensory neurons

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3
Q

typically, what is an animal if it has bigger eyes or eye sockets?

A

nocturnal

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4
Q

what is an animal if it has eyes at the side of their head?

A

a prey animal

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5
Q

what is an animal if it has eyes at the front of their head?

A

a predator animal

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6
Q

what are the main components of the eye?

A
  • iris
  • cornea
  • pupil
  • conjunctiva
  • retina
  • optic nerve
  • macula
  • vitreous/aqueous humour
  • cillary muscles
  • lens
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7
Q

what happens when light first passes through the eye?

A
  • passes through the cornea, lens, aqueous and vitreous humour
  • which focuses the light on the retina.
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8
Q

what is the purpose of the aqueous humour?

A

provides nutrients and gives the eye shape

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9
Q

what is the purpose of the vitreous humour?

A

provides structure of the eye and protects the retina

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10
Q

what is the corneas function?

A

acts as a barrier and protects the eye against infection

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11
Q

what is the function of the lens?

A

transmits light and focuses it on the retina

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12
Q

what is the function of the ciliary muscles?

A

relaxes and contacts the lens to help focus on specific objects

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13
Q

what is the function of the iris?

A

contracts and dilates to control the amount of light entering the eye

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14
Q

what is the function of the retina?

A

contains photo receptor cells to help the eye capture images

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15
Q

what is the function of the conjunctiva?

A

provides protection and lubrication of the eye via mucus and tears

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16
Q

what is the function of the pupil?

A

lets light into the eye

17
Q

what is the purpose of the macula?

A

helps process clear, straight-head vision

18
Q

what is the optic nerves function?

A

sends messages from the eye to the brain to create an image

19
Q

what cells are found in the retina?

A

rod cells

20
Q

what cells are densely packed in the macula?

A

cone cells

21
Q

what are rod cells main function?

A

vision in low light

22
Q

what are cone cells main function?

A

handling colour and detail in images

level 3 animal biology (12 decks)

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