Saturday, April 7, 2018

Biology 6

ജീവശാസ്ത്രത്തിലെ കണ്ണ്, ചെവി എന്നിവയുമായി ബന്ധപ്പെട്ട ചോദ്യങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ
  • Study of eyes and eye diseases
                 Ophthalmology
  • Outer layer of eyes
                 Schlera
  • Middle layer of eyes
                 Choroid
  • Inner layer of eyes
                 Retina
  • Layer of eyes which supplies nutritions
                 Choroid
  • Circular transparent front portion of eyes
                 Cornea
  • Lens in eyes
                 Biconvex lens
  • Image formed on the retina of eyes is
                 Real and inverted
  • For normal eyes near point is 
                 25 cm
  • Thin covering that protects cornea
                 Conjunctiva
  • Curtain like partition behind cornea
                 Iris
  • Opening at the centre of Iris
                 Pupil
  • Portion that controls the light enters eye
                 Pupil
  • Which is regulating the size of pupil in eyes
                 Iris
  • Light sensitive layers are present in which layer
                 Choroid
  • Ability of eyelens to adjust its focul length is known as
                 Power of accomodation
  • Cells responsible for dim light vision
                 Rods
  • Cells responsible for Bright light vision and color vision
                 Cone cells
  • Owls cannot see during day time due to the absence of 
                 Cone cells
  • Point where no rod and cone cells are present and no image formation happening
                 Blind spot
  • Name of the pigment that helps to see in dimlight
                 Rhodopsin
  • Light sensitive pigment of rod cells 
                 Rhodopsin
  • Light sensitive pigment of cone cells 
                 Iodopsin
  • Jelly like substance filled in between lens and retina
                 Vitreous humor
  • Fluid filled in between Iris and cornea
                 Aqueous humor
  • Focal length of the lens is adjusted by\ligments that holds lens in place
                 Ciliary body
  • Tear producing glands in eye
                 Lachrymal gland
  • Enzyme present in tears
                 Lyzosyme
  • Eye transplantation surgery includes
                 Cornea, Schlera and vitreous humor
  • Cornea transplantation surgery is known as
                 Keratoplasty
  • Short sight is also known as
                 Myopia
  • In case of Myopia the image is formed at
                 In front of the retina
  • Long sight is also known as
                 Hypermetropia
  • In case of Hypermetropia the image is formed at
                 Behind the retina
  • Presbyopia is caused by
                 eduction in elasticity of lens
  • Situation in which image is not clearly formed due to irregular curvature of cornea
                 Astigmatism
  • Squint eyes can be corrected by
                 Eye surgery
  • Myopia can be corrected with
                 Concave lens
  • Hypermetropia can be corrected with
                 Convex lens
  • Both Myopia and hypermetropia can be corrected with
                 Bifocal lens
  • Astigmatism can be corrected with
                 Cylindrical lens
  • Color blindness was discovered by
                 John Dalton
  • Person suffering from Color blindness unable to distinguish
                 Red and Green colors
  • Eye diseases that occurs due to the deficiency of Vitamin A
                 Night blindness and Xerophthalmia
  • Loss of vision in dim lights is called
                 Night blindness
  • Eye diseases that occurs when iris become dry and opaque is called
                 Xerophthalmia
  • Clouding of eyesdue to ageing
                 Cataract
  • Eye diseases due to the increased pressure in the eye ball
                 Glaucoma
  • Inflamation or infection of conjunctiva is called
                 Conjunctivitis or red eyes or Madras eye
  • Organ which maintains the balance of the body
                 Ear
  • Part of ear which helps hearing
                 Cochlea
  • Semicircular canals, Vestibules, Pharynx etc are parts of
                 Ear
  • Part of ear which has the shape of snail shell
                 Cochlea
  • Instrument used for examining outer ear drum
                 Otoscope
  • Hammer shaped bone in ear
                 Malleus
  • Anvil shaped bone in ear
                 Incus
  • Stirrup shaped bone in ear
                 Stapes
  • Smallest bone in human body
                 Stapes
                                                                  (To be Continued...)

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