Cones are concentrated at the center of retina called fovea centralis where no rod cells are present.
The retina is the innermost lining of the eye, made up of thousands of light-sensitive cells, with an inner part of nerve tissue and a pigmented outer part. It plays a fundamental role in the formation of images, which will be projected and then sent to the brain, through electrical impulses.
The retina consists of three types of layers: bipolar neurons, ganglion neurons and photosensitive cells.
Bipolar neurons promote the union of photosensitive cells with ganglion neurons, which are grouped with nerve fibers and thus originate the optic nerve. It carries nerve impulses to the brain. Photosensitive cells, due to their shape, are named in two types: cones and rods.
There are about 6 million cones that are concentrated in a small depression located in the macula lutea (center of the retina) called the fovea. They have an elongated and cylindrical shape, with conical outer segments. It is in this region that the image is most clearly formed, as they are stimulated by the most intense light. Cones are specialized in the accuracy of daytime vision and in recognizing color. There are three types of cones that have fundamental photopigments that respond to light of wavelengths (λ): cyanopigment - S cones (short λ) - sensitive to blue color, chloropigment - M cones (medium λ) - sensitive to green color and erytopigment - cones L (λ long) - sensitive to red color. The brain interprets the signals received by these cones, which allows it to process color differentiation.
Answer: Refuse the listing
Explanation:Listing is a term mainly used in trade of stocks, bonds,real and and other commodities,when a potential vendor(a person given the authority to sell or the owner who wants to sell) has specifically stated that he will not be entraining any offers from a client it is better to refuse the listing in order to prevent any dispute or conflicts which can arise due to the preferences from the vendor.
Answer:
The genius of the U.S. Constitution is no accident. America’s Founding Fathers had learned the hard way that any government—given too much power—would eventually oppress the people. Their experiences in England left them in fear of the concentrated political powers of a monarchy. They believed that harnessing the government was the key to lasting liberty. Indeed, the Constitution’s famed system of balanced separation of powers enforced through checks and balances was intended to preventing tyranny.
Explanation:
I GOTCHU
A poor internet connection could be of great concern to her while presenting her slides.
The key-point we should understand here thet the Power-point Slides on Microsoft’s web app is different from the Microsoft Power-point.
The Microsoft Power-point does not requires the use of Internet to present the stored and organized slides on the computer while the Power-point Slides on Microsoft’s web app requires the use of Internet because it is been stored on Web-Cloud.
Therefore, in conclusion, what could be of concern to her while presenting her slides on the Microsoft’s web app is poor internet connection.
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