There is cartilage at the ends of the bones. Some allows for free movement, some for limited movement and some for no movement.
cartilage
they have cartilage+some other stuff.
No, some have bones, others have cartilage, while others have neither one.
Cartilage acts as a cushion and reduces the friction between the bones and in some cases holds bones together, like rib cartilage. Cartilage is found in between bones, in the nose, ears and intervertebral discs just to name a few.
It's called 'bone marrow', and it's function is the manufacturing of haemoglobin. A patient with leukaemia, (cancer of the blood), would geta bone marrow transplant.
There are about 300 bones in the human newborn baby. Many bones eventually fuse together due to the soft cartilage hardening after the baby is born, the fusing doesn't happen instantly though, it takes months and even years for the cartilage is solidified.
Some sharks have bones like us however some sharks have bones that are made out of cartilage.
I was taught that the nose was only made of cartilage so as far as I know-- none
cartilage
Sharks are a type of fish that have no bones, only cartilage. Some parts of their skeleton, like their vertebrae, are calcified. Cartilage, a strong fibrous substance, is softer than bone; our nose and ears are made of cartilage. Sharks belong to the group of fishes called Elasmobranchii, which also includes the rays, skates, and ratfish. The Elasmobranchii are all fish that have no bones, only cartilage.
Yes, all fish have bones. In fact, all fish are vertebrates, so they all have vertebrae (a spine or backbone).