Question

Depression in retina which has cones only is
A Blind spot
B Fenestra rotunda
C Fovea centralis
 D Fenestra ovalis

Answer 1

Hint On the inside of the eye, the retina is a thin layer of tissue that lines the back of the eye. It's close to the optic nerve. The retina's job is to receive light that has been focussed by the lens, transform it into neural impulses, and convey those signals to the brain for recognition.

Complete step by step answer:
The optic nerve and blood arteries exit the eyeball at the blind spot. The brain is related to the optic nerve. It transports images from the eyes to the brain, where they are processed. This is how we can tell what we're looking at. The object or image is seen by our eyes, and our brain interprets it.
Rotunda fenestra - Fenestra that leads into the cochlea fenestra cochleae, cochlea fenestra, cochlea fenestra, cochlea fenestra, cochlea fenestra, cochlea fene fenestra - A small aperture in the bone between the middle and inner ear that is covered with membrane.
The fovea centralis is an indented area of the retina's macula that is placed in the centre. Rods and cones are the retina's cells. Night vision is aided by rods, whereas daylight vision is aided by cones. Because the fovea centralis is made up entirely of cones, it is critical for central vision.
The oval window (also known as the fenestra vestibuli) is a membrane-covered orifice that connects the middle ear to the inner ear's cochlea. Vibrations that strike the tympanic membrane pass to the inner ear via the three ossicles.

So, the correct answer is option B.

Note: The fovea is responsible for sharp central vision, also known as foveal vision, which is required in humans for reading, driving, and other activities requiring fine visual detail. The parafovea is the intermediate belt, with more than five rows of cells in the ganglion cell layer.