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.
Native Americans in the United States fall into a number of distinct ethno-linguistic and territorial phyla, whose only uniting characeristic is that they were in a stage of either Mesolithic (hunter-gatherer) or Neolithic (subsistence farming) culture at the time of European contact.
They can be classified as belonging to a number of large cultural areas:
<span>Continental US</span>
Colombia- Juan Manuel Santos
Mexico- <span>Enrique Peña Nieto</span>
Costa Rica- Luis Guillermo Solís
El Salvador- Salvador Sánchez Cerén
It’s true, let’s look at Alexandra Ocasio Cortez as an example. She is a local government representative and has passed legislation to move $5 million to treatment for Opioid addiction with funds shifted from the DEA. $10 million in funds to clean up toxic bombardment sites in Puerto Rico that were getting people sick.
<span>Accepting a new
job depends on how the person sees the kind of incentives he or she wants. It might
be because of the type of work that he/she wants. But in this problem, the best
answer would be a. high wages. Most of the people wanted a new job to increase
their wage for a number of reasons. It might be because of family, finances
etc. Expensive commute and long hours cancels the interest of a person to
accept the job offer. </span>
