Cartilage
Cartilage
que se yo
Um, I think it is...Cartilage?
Well bones in an embryo aren't really there yet until the embryo becomes multi cellular and more of a child. Even when the embryo becomes more complex the bones are still just cartilage the same material that makes up your nose. Over time a bone cell called osteoblast applies both calcium and phosphate thus the bones become more dense hope i answered your question
the ability to move the cartilage and squeeze his/her way out of there!!
4th week
In an embryo, the skeleton is originally made of cartilage. This cartilage gradually mineralizes and ossifies into bone in a process called endochondral ossification.
A hydraulic skeleton is composed of muscle and fluid.
Fetus
Cartilage
bone
It is made up of mostly hyaline cartilage.