678289
Descripción
Test por Petite Piplup, actualizado hace más de 1 año
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Creado por Petite Piplup
hace más de 10 años
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Pregunta 1
Pregunta
What is the sclera?
Respuesta
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The white part
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The coloured part
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The black part
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The covering
Pregunta 2
Pregunta
(a) What is the iris? and (b) What does it do?
Respuesta
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(a) The coloured bit, (b) Controls amount of light entering eye
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(a) The coloured bit, (b) Point at which light enters the eye
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(a) The black bit, (b) Controls amount of light entering eye
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(a) The black bit, (b) Point at which light enters the eye
Pregunta 3
Pregunta
(a) What is the pupil, and (b) What does it do?
Respuesta
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(a) The black bit, (b) Lets light enter the eye
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(a) The black bit, (b) Controls amount of light entering the eye
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(a) The coloured bit, (b) Lets light enter the eye
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(a) The coloured bit, (b) Controls amount of light entering the eye
Pregunta 4
Pregunta
The eye needs to create an image on what?
Respuesta
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The retina
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The fovea
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The optic nerve
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The primary visual cortex
Pregunta 5
Pregunta
Which two sections of the eye act to focus light onto the retina?
Respuesta
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Corenea and lens
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Cornea and pupil
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Lens and iris
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Pupil and iris
Pregunta 6
Pregunta
Photoreceptors on the retina pick up information about the image which is taken where?
Respuesta
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Down the optic nerve to the brain
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Through the ganglion cells to the bipolar cells
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Down the optic nerve to the bipolar cells
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Through the ganglion cells to the horizontal cells
Pregunta 7
Pregunta
Rays of light need to be just focused on the retina. When they are just in front, this is called (a) and (b) lens is needed.
Respuesta
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(a) Myopia (nearsightedness), (b) Concave
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(a) Myopia (nearsightedness), (b) Convex
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(a) Hyperopia (farsightedness), (b) Concave
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(a) Hyperopia (farsightedness), (b) Convex
Pregunta 8
Pregunta
Rays of light need to be just focused on the retina. When they are just behind, this is called (a) and (b) lens is needed.
Respuesta
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(a) Hyperopia (farsightedness), (b) Convex
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(a) Hyperopia (farsightedness), (b) Concave
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(a) Myopia (nearsightedness), (b) Convex
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Myopia (nearsightedness), (b) Concave
Pregunta 9
Pregunta
What are the photoreceptors that respond to light?
Respuesta
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Rods and cones
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Rods and bipolar cells
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Cones and ganglion cells
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Bipolar cells and ganglion cells
Pregunta 10
Pregunta
What is the function of bipolar cells?
Respuesta
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Transfer information from the photoreceptors to the ganglion cells
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Act as a photoreceptor
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Transfer information to the brain
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Allow ganglion cells to communicate with one another
Pregunta 11
Pregunta
What is the function of horizontal cells?
Respuesta
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Allows adjacent retina cells to communicate
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Acts as a photoreceptor
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Transfers information from photoreceptors to ganglion cells
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Transfers information to the brain
Pregunta 12
Pregunta
What is the function of ganglion cells?
Respuesta
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Transfer information to the brain
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Transfer information from photoreceptors to bipolar cells
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Enable adjacent retinal cells to communicate
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Act as photoreceptors
Pregunta 13
Pregunta
What are the three types of cones?
Respuesta
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(1) S-cones, long wavelengths, blueish (2) M-cones, medium wavelengths, greenish (3) L-cones, short wavelengths, redish
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(1) S-cones, short wavelengths, blueish (2) M-cones, medium wavelengths, greenish (3) L-cones, long wavelengths, redish
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(1) S-cones, long wavelengths, greenish (2) M-cones, medium wavelengths, redish (3) L-cones, short wavelengths, blueish
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(1)L-cones, long wavelengths, blueish (2) S-cones, medium wavelengths, greenish (3) M-cones, short wavelengths, redish
Pregunta 14
Pregunta
The fovea (retinal center) only has (a) and is specialised for (b)
Respuesta
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(a) Cones, (b) high acuity colour vision
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(a) Rods, (b) high acuity colour vision
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(a) Cones, (b) high acuity monochrome vision
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(a) Rods, (b) high acuity monochrome vision
Pregunta 15
Pregunta
Outline the blindspot
Respuesta
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Has no photoreceptors, we tend to be unaware of this
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Has a dense population of photoreceptors, we tend to be unaware of this
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Has no photoreceptors, we tend to be aware of this
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Has a dense population of photoreceptors, we tend to be aware of this
Pregunta 16
Pregunta
Rods are only used at (a), this is called (b)
Respuesta
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(a) low light levels, (b) scotopic vison
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(a) low light levels, (b) photopic vision
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(a) high light levels, (b) scotopic vision
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(a) high light levels, (b) photopic vision
Pregunta 17
Pregunta
Cones are most sensitive at (a) light levels, this is called (b)
Respuesta
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(a) high, (b) photopic vision
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(a) high, (b) scotopic vision
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(a) low, (b) photopic
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(a) low, (b) scotopic
Pregunta 18
Pregunta
At dim light levels perception lacks what?
Respuesta
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colour and detail
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colour and texture
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depth and detail
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depth and texture
Pregunta 19
Pregunta
Total dark adaptation takes (a) and is first controlled by cones for (b) before being taken over by rods
Respuesta
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(a) 30 minutes, (b) 5-10 minutes
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(a) 60 minutes, (b) 5-10 minutes
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(a) 30 minutes, (b) 1-2 minutes
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(a) 60 minutes, (b) 1-2 minutes
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