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/sci/ - Science & Math

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>> No.10721029 [View]
File: 96 KB, 1280x571, Human and Giraffe recurrent laryngeal nerve.jpg [View same] [iqdb] [saucenao] [google]
10721029

>>10715397
Most mammals have a nerve that loops down through the aorta then back up again rather than taking a direct route. This is inefficient and the only reason why we have it is because of a holdover from our fish ancestors. So basically biology won't even bother fixing dumb mistakes.

>> No.10487576 [View]
File: 96 KB, 1280x571, vagusnerve.jpg [View same] [iqdb] [saucenao] [google]
10487576

>>10487561
An easy one is the giraffe. The vagus nerve in mammals is the result of vagus nerves in fish which is attached to gills. As a result of having necks, the vagus nerve has stretched and goes from the brain, down the neck, around the aorta, and back up to the larynx. Due to the length of a giraffe's neck, the vagus nerve has to take a 15 ft detour to get the larynx. Any intelligent creator would know that's a waste of god damn nerve tissue.

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