Question

Which of the following are the light-sensitive cells present in the retina?
A) Rods
B) Choroid
C) Chroma’s
D) Cones

Answer 1

Hint: Rods have low-light vision obligations. They are not colour vision mediators and have a poor acuity. The cones are active at higher levels of light, are colour visible and induce spatial acuity. The primary fovea is predominantly inhabited by cones.

Complete step by step solution:
The retina is a membrane containing sensory receptors which lines deeply to the choroid and superficially to the vitreous humour the inner part of the posterior wall of the eyeball. It consists of epithelial and neural cells arranged in 10 distinct layers in which there can be identified a special community of receptors, photoreceptors. These picture receptors are found in the middle of the retina, the Macaulay, the retinal functional middle. In the middle of the Macaulay is the Fovea. The Macaulay is in charge of colour vision and high resolution provided by multiple photoreceptor types.

Cornea is the anterior sclera that collects air-borne oxygen. This is the only portion of the human body that is blood free and it takes oxygen from the air directly. Sclera is the outer skin shell that holds the eye shape and covers the eye as well. Choroid is the middle eye layer with several channels in the blood. The inner lining of the skin is retinal. The picture of the retina is viewed by the brain. Cones and rods are light-sensitive cells.

Correct options are (A) and (D).

Note: The external portion helps to absorb and transform light to an electric stimulus while the cilium binds the external and internal segments. There are metabolic organelles in the inner segment, including mitochondria, lysosomes, and endoplasmic reticula. Finally, the synaptic zone works between photoreceptor cells and bipolar cells or secondary neurons through transferring neurotransmitters, such as glutamate. In the photoreceptor cells, light is absorbed by rhodopsin. There are optical pigments made from a protein found on the outer membrane of the discs.