Illustrate about human eyes, Biology

Assignment Help:

Eyes

We have a pair of eyes. They are held in socket of the skull by four rectus muscles and two oblique muscles. These muscles control the movements of the eyes. The wall of the eye ball is composed of an elastic layer. In front this layer is transparent, called the cornea; the rest is opaque, called the sclera. In front, the sclera is covered by a very thin layer called conjunctiva. The next layer lining the inner surface of the sclera is uveal tract. Uveal tract has three parts, the part in front is a circular diaphragm, called iris and aperture of this diaphragm is called pupil. The inner most layer of the eye is nervous layer which is called retina. It is composed of visual nerve endings for reception and transformation of light stimuli.

1939_biology.png

 


Related Discussions:- Illustrate about human eyes

Respiration, explain the 4 stages of aerobic respiration

explain the 4 stages of aerobic respiration

Explain adverse effects, Explain Adverse Effects Fluconazole is genera...

Explain Adverse Effects Fluconazole is generally well tolerated. Gastrointestinal distress and rash can happen. Stevens-Johnson syndrome, anaphylaxis and hepatic necrosis have

Determine the factors affecting fertilizer requirements, Factors Affecting ...

Factors Affecting Fertilizer Requirements   The rapid increase in the use of fertilizers is based on the fact that large profits are obtained from the money invested in them. The

What is in a test cross invovle, In a test cross: A.alleles of two genes is...

In a test cross: A.alleles of two genes is always involved. B.One parent must be homozygous recessive C.the physical manifestation of a trait can be deterimined. D.both A and C are

Definition of infective endocarditis, Infective endocarditis (IE) is a micr...

Infective endocarditis (IE) is a microbial infection of the endothelial surface of the heart. The characteristic lesion, the vegetation, is a variably sized amorphous mass of plate

Phylum arthropoda - classification of multicellular animals, Phylum Arthrop...

Phylum Arthropoda - Classification of Multicellular Animals Earlier you known how the coelom evolved and the body of the coelomates got segmented leading to evolution of segme

Define method used for capsular staining - anthony staining, Define method ...

Define method Used for Capsular Staining - Anthony Staining Method? Another method used for capsular staining is Anthony staining method, devised by E.E. Anthony in 1931. The m

Tanco beans, what is the origin, uses, morphology, active constituents and ...

what is the origin, uses, morphology, active constituents and market perparations ?

Cellulose, CELLULOSE It is a linear polymer of b -D-glucose. It i...

CELLULOSE It is a linear polymer of b -D-glucose. It is the structural polysaccharide of plant cell walls, walls of some primitive fungi, some protists, and tunic of asci

Agro industrial-phenolic compounds, Phenolic compounds Gossypol: Gos...

Phenolic compounds Gossypol: Gossypol is a toxic compound found in the cotton plant. It is concentrated in the cottonseed but can also be found in other parts of the cotton

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