Explain the working of human visual system, Biology

Assignment Help:

Q. Which is the part of the human visual system where the receptors that sense light, i.e., the photoreceptor cells, are located? How do those cells work?

The photoreceptor cells form a lamina, the retina that covers the internal posterior region of the eyeball. The photosensitive cells of the retina are divided into two types: the rod cells and the cone cells. These cells have pigments that sense specific light wave ranges that are the frequencies and trigger action potentials conducted by the optical nerves to the visual area of the brain.


Related Discussions:- Explain the working of human visual system

Purpose of evaluation, PURPOSE OF EVALUATION: The purpose of  evaluati...

PURPOSE OF EVALUATION: The purpose of  evaluation of service is to answer the questions, "To what extent and how well did the programme meet the objectives of  the service?'

State the exocytosis in a skeletal muscle, Exocytosis in a skeletal muscle?...

Exocytosis in a skeletal muscle?   A.  During exocytosis in a skeletal muscle, there will be release of calcium ions from intracellular vesicles in the sarcoplasmic reticulum i

Tumor suppressor genes, Tumor Suppressor Genes Tumor suppressor genes...

Tumor Suppressor Genes Tumor suppressor genes or anti-oncogenes generally inhibit cell division in cooperation with proto-oncogenes. The very existence of these genes prevent

Why neuron a is a healthy neuron, Why Neuron A is a healthy neuron Neu...

Why Neuron A is a healthy neuron Neuron A is a healthy neuron with all the usual ion channels.  When at rest with a membrane voltage of R millivolts, neuron A produces no acti

Development of nutritional biochemistry, Development of Nutritional Biochem...

Development of Nutritional Biochemistry Nutrition,  in  general, and  particularly nutritional biochemistry, has  traveled a  long way since 1926, when nutrition was first reco

Explain the structure of a human sperm, (a) Explain the structure of a hum...

(a) Explain the structure of a human sperm. (b) Give a schematic representation showing the events of Spermatogeninesis in human male.

Properties of isozymes, Properties of Isozymes Isozymes differ from  ...

Properties of Isozymes Isozymes differ from  each other not only in  the amino acid composition, they also have different electrophoretic property, thermolability, immunologi

Skin, Two adaptation of the skin against attack by micro-organisms

Two adaptation of the skin against attack by micro-organisms

How can amine groups be classified, Q. How can amine groups be classified? ...

Q. How can amine groups be classified? Amines can be classified into primary amines, those to which one -R (variable radical) is attached to a -NH 2 , secondary amines, those w

Explain in brief about the ciliary muscle, Explain in brief about the cilia...

Explain in brief about the ciliary muscle During accommodation the ciliary muscle contracts and in turn the size of the ciliary ring is reduced. This results in the suspensory

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