16 Questions
What is the function of the cornea in the eye?
It bends light entering the eye by refraction and is responsible for 2/3 of the focusing of light onto the retina
Where is the conjunctiva located?
It covers the eye and lines eyelids to keep them moist and lubricated
What is the function of tear ducts and glands in the eye?
To produce a thin layer of tears that spread over the surface of the cornea at each blink
What happens to excess fluid produced by tear glands?
It is drained through tear ducts, located in the corner of the eye, draining to the nose
What is the function of aqueous humour in the eye?
To fill the space between cornea and lens and provide nutrition
How does the sclera protect the eyeball?
By being a white tough layer of elastic tissue that surrounds the eyeball
What is the function of vitreous humour in the eye?
Helps maintain pressure within the eye and the shape of the eye
Which part of the eye contracts to widen the pupil in dark environments?
Ciliary muscle
What is the purpose of the suspensory ligaments in the eye?
To attach the lens to the ciliary muscles
In which part of the eye are cones concentrated?
Fovea
What is the function of rods in the eye?
To detect potential threats in dim light conditions
Which part of the ear is responsible for maintaining balance?
Semicircular canals
What is the role of the eustachian tube in the ear?
To equalize air pressure between the middle ear and the atmosphere
Which structure in the eye contains light-sensitive cells connected to nerve cells?
Retina
What is the function of the iris in the eye?
To control the amount of light entering the eye
Which part of the eye is responsible for carrying out the final focusing of light after it passes through the cornea?
Lens
Test your knowledge on the structure of the eye, including its protective layers like the sclera and transparent outer bit called the cornea. Explore the role of the cornea in bending light, focusing on the retina, and its sensitivity to touch and temperature.
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