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.
The proposed changes to boost the Chinese economy that caused Mao to launch the oppressive Cultural Revolution included allowing workers to compete for wages, capitalist reforms that Mao viewed as anti-Communist, and to allow farmers to sell their excess crops.
The Cultural Revolution was launched by the Chinese Communist Party Chairman Mao Zedong to reinvigorate the spirit of the Chinese Revolution.
In the 1960s, Mao was worried that China would adopt the Soviet model which he felt was a betrayal of the Russian Revolution. He was also concerned with his diminishing role in the government.
He felt that the economic policies adopted by his colleagues to revive the Chinese economy after the failed Great Leap Forward policy were against the spirit of the revolution. These included reforms on worker’s wages and sale of agricultural produce.
To learn more about the Cultural Revolution: brainly.com/question/10693549
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Answer:
French
Explanation:
The French Congo began at Brazzaville on 10 September 1880 as a protectorate over the Bateke people along the north bank of the Congo River.The plan to develop the colony was to grant massive concessions to some thirty French companies. These were granted huge land on the promise they would be developed.
French claims by Pierre de Brazza were quickly acted on by the French military which took control of what is now the Republic of the Congo in 1881 and Guinea in 1884. Italy became part of the Triple Alliance, an event which upset Bismarck's carefully laid plans and led Germany to join the European invasion of Africa.
Because it opened the Mississippi river to American traffic.
Democracy is technically young men killing each other in war. Freedom is the will of not being under laws or rules. Democracy is the law of not being under other rules. Freedom, is just eventful till new rules and laws come.
