The notochord is a flexible rod along the entire length of the body. Muscles attach to it and it also provides support for the animal. In some chordates, such as the hagfish, but not humans, it persists throughout life as the main axial support of the body. Because its function is important, why doesn't it persist in humans?

Respuesta :

Answer:

It fades away and becomes a part of the vertebral column!

Explanation:

Humans start off with a notochord, but it soon starts to become part of the vertebral column after it's uses become less important.

Hope this helped!! :)