Why do frogs blink frequently while eating? Detailed answer

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Why do frogs blink frequently while eating? Detailed answer

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Why do frogs blink frequently while eating?

Frogs cannot effectively chew their food and use their tongue to force it down their throats. Instead, they push food with their eyes, pulling them into the skull with special muscles - which is why frogs often blink while eating.

Authors: Jimmy Wales, Larry Sanger

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Where did you come up with glasses with temples?

As you know, glasses do not fall off, because they are held by the temples. Who and where came up with the happy idea to make such glasses? For the right to be called their homeland, two Italian cities, Pisa and Florence, argued long and hard. At the beginning of the XIV century, the monk Allesandro della Spina lived in the monastery of Pisa. A brief note about him was preserved in the chronicle of the monastery: "Allesandro died in 1312, everyone was very sorry for him, since he was a modest, gentle man and, in addition, he knew how to make glasses."

But the Florentines firmly believed that glasses were invented by their countryman, because every Florentine heard about this from his grandfather or great-grandfather. Historians dug up all the archives. And in 1738, the work of the Florentine professor D. Mani was published under the title "Historical treatise on glasses on the nose." It claims that the inventor of glasses is the Florentine monk Salvino Armato. The professor referred to the fact that he found in the archives a description of a monument near the chapel, on which there was such an inscription: "Here lies Salvino Armato, the inventor of glasses. Lord, forgive him! 1317."

The dispute between the Florentines and the Pisans has not ended to this day.

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Lack of sleep leads to overeating 24.01.2012

New data from Swedish researchers at the University of Uppsala indicates that sleep deprivation triggers mechanisms in the brain that lead to overeating. The results of an earlier study showed that in the morning after a completely sleepless night, the body of young men with normal body weight significantly reduced energy intake. Moreover, they had an increased feeling of hunger, which testified to the ability of an acute lack of sleep to influence a person's perception of food.

In their new work, the researchers conducted a systematic analysis, the purpose of which was to identify areas of the brain involved in the formation of the sensation of hunger, which are affected by lack of sleep. Using the method of functional magnetic resonance imaging (MRI), they analyzed the brain activity of 12 men with normal body weight, while they considered meals of different calorie content.

Comparison of the results obtained after a sleepless night with the results obtained in the study of sleepy men showed that in the first case, the participants showed increased activity in the right anterior cingulate cortex of the brain. The severity of the observed pattern did not depend on the calorie content of the dish in question, or on the results of a preliminary assessment of the experienced feeling of hunger, or on the concentration of glucose in the blood measured on an empty stomach. However, the results of the assessment of the strength of the feeling of hunger, carried out after the end of the brain scan, were proportional to the level of activation of the indicated area of the cerebral cortex.

The results obtained suggest that a sleepless night is a strong stimulus to food absorption, independent of the actual feeling of hunger and blood glucose levels. It is possible that this mechanism makes a significant contribution to the growing problem of obesity among the populations of Western Europe and the United States.

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