Why does the human and mammalian recurrent laryngeal nerve have an inappropriate length? Detailed answer

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Why does the human and mammalian recurrent laryngeal nerve have an inappropriate length? Detailed answer

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Why does the human and mammalian recurrent laryngeal nerve have an inappropriate length?

Humans and all mammals have a recurrent laryngeal nerve that provides motor function and sensitivity to the structures of the larynx. It departs from the vagus nerve coming from the brain, goes around the aortic arch or other large artery and returns to the larynx. This route is especially long - up to four meters - for the giraffe, although the distance from the brain to the larynx is only a few centimeters. Such an inappropriate trajectory is used as proof of the theory of evolution by its proponents - after all, mammals inherited this structure from fish that do not have a neck, and the nerve follows the optimal trajectory.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

Who is Hercules?

Everyone knows that Hercules was an extraordinary strong man. However, for the ancient Greeks, his name meant much more. They worshiped him as if he were one of the gods.

According to legend, Hercules was the son of the god Zeus and the mortal woman Alcmene. Hera, the divine wife of Zeus, hated him. When Hercules still could not walk and was lying in his cradle, she sent two snakes to him to kill him. However, the baby easily dealt with them, strangling them both. As an adult, Hercules married Megara, but Hera sent him into a fit of madness. In a fit of crazy rage, he killed his wife and children. To make amends, Hercules, at the direction of the oracle in Delphi, offered his services to King Eurystheus, who instructed him to perform twelve labors.

The story of these exploits is devoted to most of the myth of Hercules. He began by strangling a ferocious lion. Then he killed the Hydra, a monster with nine heads, eight of which were mortal and one was immortal. Whenever Hercules cut off one mortal head from the Hydra, two grew in its place.

His third feat was to capture an exceptionally strong and vicious wild boar. According to the fourth order of Eurystheus, Hercules brought him a doe with golden horns.

Then Heracles had to clear manure from the huge barnyard of King Avgii, which had not been cleaned for 30 years. Hercules changed the channels of two rivers, directing them to the barnyard, and that one was clean in just a day.

The sixth feat of Hercules was the expulsion and murder of the Stymphalian birds that devoured people; the seventh was the capture of the Cretan bull.

The eighth task was to tame the wild mares of King Diomedes, who fed them human meat.

Hercules accomplished the ninth feat by obtaining for the daughter of Eurystheus the belt of Hippolyta, the queen of the Amazons.

The tenth feat was to deliver the cows of Gerion from an island that lay far to the west in the ocean. On the way, Hercules, having reached the western tip of Europe, split the rock and formed the Strait of Gibraltar.

To accomplish the eleventh feat, Hercules, on behalf of Eurystheus, obtained the golden apples of the Hesperides.

Hercules performed the twelfth feat by bringing to the king a watchdog who stood at the gates of Hades, the kingdom of the dead, Kerberos.

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