Question

Match the questions with its answer. Some answers may be used more than once, some not at all.

What tissue type is the pigmented layer?

What is the pigment in the pigmented cells?       

What is the anatomical structure of the neurons of the retina?   

Which photoreceptor cell is responsible for color?            

Which photoreceptor cell is activated by dim light?          

What is the name of the area with the greatest visual acuity?      

Which photoreceptor cell is found in the area of greatest visual acuity?

A .Bipolar neuron

B. Melanin

C. Simple cuboidal epithelium

D. Simple columnar epithelium

E. Cone

F. Rod

G. Fovea centralis

H. Unipolar neuron

Answer 1

Hi.please go through the answers.

1.Simple cuboidal epithelium is type of epithelium of pigmented layer.This type of epithelium has cells which have their height and width approximately same.

2.Pigment in pigmented cells is melanin.It is produced by melanocytes.

3.Anatomical structure of neurons of retina is Bipolar neuron.They have two processes emerging from soma,one is dendrite which carries information from periphery and axon which carries information to the brain.

4.Cone cell is the photoreceptor cell responsible for colour.

5.Rods are the photoreceptor cells responsible for dim light.Rods contain rhodopsin which breaks into opsin and retinal when exposed to light. Rods are very sensitive to light and they are responsible for black and white vision and also for vision in the dim light.

6.Fovea centralis is the area of greatest visual activity. It is responsible for sharp central vision.useful in performing activities like reading or driving. It is part of the eye located at Central region of macula region of retina.

7. Cone cells are the photo receptor cells found in fovea centralis.

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