Neural Control and Coordination


  1. Characteristic feature of human cornea









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    The outermost layer of the eye ball is fibrous in nature. Two-third part of this layer is opaque and lies inside the eyeorbit and is known as sclera. The remaining onethird of the outer layer is transparent and bulges out to form the cornea. There is no supply of blood in cornea.

    Correct Option: C

    The outermost layer of the eye ball is fibrous in nature. Two-third part of this layer is opaque and lies inside the eyeorbit and is known as sclera. The remaining onethird of the outer layer is transparent and bulges out to form the cornea. There is no supply of blood in cornea.


  1. Suspensory ligament is part of









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    Stretching and relaxation of suspensory ligament changes the focal length of lens for accommodation.

    Correct Option: B

    Stretching and relaxation of suspensory ligament changes the focal length of lens for accommodation.



  1. Cornea transplantation is outstandingly successful because









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    Cornea transplants are easy, since there are no blood vessels involved.

    Correct Option: B

    Cornea transplants are easy, since there are no blood vessels involved.


  1. Retina is most sensitive at









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    Fovea centralis is the most sensitive part of retina (in fact most sensitive part of the eye). This is the area of most acute vision. Actually it is a small depression present in mammals (not in frog) at macula lutea or yellow spot.

    Correct Option: D

    Fovea centralis is the most sensitive part of retina (in fact most sensitive part of the eye). This is the area of most acute vision. Actually it is a small depression present in mammals (not in frog) at macula lutea or yellow spot.



  1. Light rays entering the eye is controlled by









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    Pupil is the opening which controls the amount of light entering in eye. When light intensity is high, it decreases in size and when light intensity is low it dilates to allow more light in the eye to make eye enable to see the object.

    Correct Option: A

    Pupil is the opening which controls the amount of light entering in eye. When light intensity is high, it decreases in size and when light intensity is low it dilates to allow more light in the eye to make eye enable to see the object.