Worksheets[HA6] Eye see what you're seeing
Total questions: 10
Worksheet time: 5mins
Which structure of the eye causes the most refraction?
lens
aqueous humor
cornea
vitreous humor
Which structure of the eye protects it from mechanical damage?
(a)
When the eyes are exposed to dim light, what happens to the pupils?
(a)
Which structure of the eye allows it to rotate?
(a)
Which layer of the eyeball is sensitive to light?
aqueous humor
choroid
retina
vitreous humor
Which neurones are found in the optic nerve?
sensory neurones
relay neurones
motor neurones
When looking at a far away object, the ciliary muscles in the eye ............., causing the suspensory ligaments to be ............, hence the lens becomes ........................
relax taut, rounder
relax, slacken, rounder
contract, taut, longer
contract, slacken, rounder
relax, taut, longer
The fovea is the point on the retina where image formed is the sharpest. What is present in the highest concentration at the fovea?
cones
rods
The amount of light entering the eye is controlled by the ............. muscles. When the .............. muscles contract, the radial muscles .................., and the pupil becomes ................
iris, radical, relax, bigger
circular , ciliary, contract, smaller
iris, circular, relax, constricted
ciliary, iris, relax, constricted
When light rays converge on this point, no image is formed as there are no photoreceptors present.
(a)
