Question

Three layers in the eyeball from inside out are:
A. Retina, choroid, sclerotic
B. Choroid, retina, sclerotic
C. Sclerotic, choroid, retina
D. Sclerotic, retina, choroid

Answer 1

Hint:
The structure of the eye is an important subject to understand as it is one of the significant sensory organs in the human body. It is primarily responsible for vision, differentiation of colour (the human eye can distinguish about 10 – 12 million colours), and maintaining the biological clock of the human body.

Complete answer:
The human eye can be compared to a camera as both work by collecting, focusing, and transferring light through the lens for creating an image of an object. The eye is the structural organ situated in the orbit of the skull. The external layer that covers the eye is known as a sclerotic layer or sclera. It is the white fibrous portion that with the cornea protects the eyeball.
The choroid is the middle layer between the retina and sclera. It is the vascular layer of the eye that contains connective tissue, and it nourishes the retina and absorbs scattered light.
The retina is the third and the interior coat of the eye. It is a light-sensitive layer of tissue. It is situated near the optic nerve on the rear side of the eye. It receives the light that the lens has focused on, transforms the light into neural signals, and sends these signals to the brain for visual identification.

Option ‘A’ is correct

Note:
Eyes are organs of the sensory system that offer a vision to animals, energy to gather and filter visual detail, and also stimulate a specific photo response function that is independent of vision. The eyes observe light and adapt it into electrochemical impulses in neurons.