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test 8 sense(vision)
  • papa kanu

  • 問題数 37 • 9/24/2024

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    問題一覧

  • 1

    What the function/ definition of vision

    detects color and intensity of light. eyes focus on an object and the brain process it

  • 2

    How many layers does the eyes

    3

  • 3

    Which are a layers of the eye

    fibrous layer, vascular layer , inner layer

  • 4

    Lens

    directly behind the pupil, the curve of the lens helps us focus on near or far objects

  • 5

    The structure that can contract or dilate to allow more or less light to enter the eye is the

    iris

  • 6

    Choroid

    black layer that contains melanin and helps prevent the scattering of incoming light

  • 7

    Parts of (fibrous layer of the eye)

    sclera, cornea

  • 8

    Light enters the eyes through the——— then is——— Bent, So that it can be focused on———. on its way to the retina, It passes through the———, the ——— the ———,the———, and the ———. The——— and ——— of the innermost layer are the ———.they respond So the light and form a nerve impulse that leaves the eye through the———and then goes to the ———. when in the brain the impulse traveled through the ——— of the ——— Where Visual interpretation occurs, Known as “seeing”.

    pulpil, refreacted, retina, cornea, aqueous humor , lens, victreous humor, rods, cones, photoreceptor cells, optic nerve, brain, occipital lobe, cerebrum

  • 9

    Parts of the (vascular layer of the eye)

    choroid, ciliary muscle , iris, lens

  • 10

    Fibrous layer

    has tough fibrous tissue

  • 11

    Vascular layer

    has a dense network of blood vessels

  • 12

    Parts of the (inner layer of the eye)

    retina, optic nerve , retinal blood vessels

  • 13

    Ciliary muscle

    holes the lens in place when we look at distant objects

  • 14

    Ciliary muscle (how it works when viewing an object in the distance?)

    it relaxed and the lens is slightly curved

  • 15

    Ciliary muscle (how it works when viewing an object that near?)

    is contracted and the causes the lens to curve more

  • 16

    Conjuctiva

    mucous membrane that lines the fibrous layer

  • 17

    Ciliary body

    secretion of vitreous fluid,changes shape of the lens

  • 18

    Rods

    detect night vision,dim light and color

  • 19

    Rods are located

    in the central portion of the retina called fouea central

  • 20

    The central portion of of the retina is called

    fovea centralis

  • 21

    Cones

    detect bright light

  • 22

    Cones are located

    they are scattered throughout the central portion of the retina called the fovea centralis and allow us to distinguish between different colors

  • 23

    The 3 kinds of cones are

    see red, green , blue

  • 24

    Fluids of the eye

    fill the spaces in the eye, help to maintain the normal shape, and reflect light

  • 25

    Aqueous humor

    watery fluid in the anterior or front chamber of the eye constantly being formed,drained and replaced if it is blocked,pressure inside the eye will build up(glaucoma)

  • 26

    Aqueous humor is located

    watery fluid in the (anterior or front) chamber of the eye

  • 27

    Vitreous humor

    jelly-like fluid in the posterior chamber of the eye

  • 28

    Vitreous hunmor is located

    in the posterior chamber of the eye

  • 29

    Retina

    makes up most of the inner layer that contains the microscopic photoreceptors cells that detect light

  • 30

    Pupil

    black center of the iris it is actually a hole in the doughnut shaped iris muscle

  • 31

    Iris

    colored portion of the eye behind the cornea , it is a muscle that dilates and constricts to let light in

  • 32

    Glaucoma

    an abnormal condition of increased pressure within the eye . prolonged pressure can damage the retinal and optic nerve

  • 33

    Presbyopia

    hyperopia (farsightedness) and impairment of vision caused by advoncing years

  • 34

    Astigmatism

    uneven focusing of the image,resulting from distortion of the curvature of the lens or cornea

  • 35

    Strabismus

    crossed eye ,eyes don’t line up in the same direction

  • 36

    Myopia

    nearsightedness; parallel rays entering the eye are focused in front of the retina producing a fuzzy image . if our eyeballs are enlongated the image focuses in front of the retina rather than on it .

  • 37

    Hyperopia

    farsightedness, inability of the eye to focus on nearby objects; rays of light entering the eye are brought to focus behind the retina producing fuzzy image