Define the visual accommodation, Biology

Assignment Help:

Q. What is visual accommodation?

Visual accommodation is the phenomenon of varying the curvature of the crystalline lens to make possible the difference of its refractivity to adjust the images of objects exactly onto the retina. The visual accommodation is proficient by the action of the ciliary muscles.

The nitid vision depends on the visual accommodation since, if the images are not projected onto the retina but behind it or in front, they will appear blurred. The closer an object is more the ciliary muscles must compress the crystalline lens increasing its curvature the more distant an object is more the ciliary muscles must relax.


Related Discussions:- Define the visual accommodation

What are the general necessities for surgery, General necessities for surge...

General necessities for surgery The actual surgical technique of dental implant placement, it would be appropriate to recapitulate the basic principles of surgery. The two prin

How can the reactions of the nervous system be classified, Q. Concerning vo...

Q. Concerning volition of the individual how can the reactions of the nervous system be classified? The efferences (reactions) of the nervous system can be classified into volu

Locomotion in annelida, Locomotion in Annelida Before we discuss the ...

Locomotion in Annelida Before we discuss the details of locomotion in annelids, we have to recapitulate the major subdivisions of the phylum Annelida. Phylum Annelida contain

Describe organs of female reproductive system, Q. What are the organs that ...

Q. What are the organs that are part of the female reproductive system? The organs that constitute the female reproductive system are the ovaries, the uterus, the Fallopian tub

What percentage should be homozygous, If 40% gene pool is heterozygous then...

If 40% gene pool is heterozygous then what percentage should be homozygous?

Define complete and simple circulation, Q. Why is the fish circulation clas...

Q. Why is the fish circulation classified as a complete and simple circulation? Simple circulation is that in which the blood circulates only in one circuit as opposed to the d

Oxusome, structure of oxysome

structure of oxysome

How to reduce the stresses on the implant, How to reduce the stresses on th...

How to reduce the stresses on the implant i) There is need to reduce the stresses on the implant - ii) Frequent recall for maintenance or hygiene appointments. iii) Gingi

Explain fibre and cardiovascular disease (cvd), Explain Fibre and Cardiovas...

Explain Fibre and Cardiovascular Disease (CVD)? The role-of dietary fibre in modulation of blood lipids was demonstrated by Keys and his co-workers in a series of experiments c

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd