No. Reptiles are vertebrates, and therefore have a spinal column made of bone.
Frogs have a skeleton made mostly of bone with some piecesmade ofcartilage.
Sharks are not amphibians, mammals, or reptiles. They are a type of fish known as cartilaginous fish, as their skeletons are made of cartilage instead of bone.
An internal skeleton made of bone and cartilage is known as an endoskeleton. This type of skeletal system provides structural support, protects internal organs, and facilitates movement through the attachment of muscles. It is characteristic of vertebrates, including mammals, birds, reptiles, amphibians, and fish. The combination of bone and cartilage allows for flexibility and strength, adapting to various physical demands.
The human ear (the bit that sticks out of the side of your head) is made of cartilage. However, inside the ear (in the middle hear behind the eardrum) there are 3 bones (the stirrup, the hammer and the anvil) made of bone.
Ribs are primarily made of bone, specifically a type of bone called cancellous or spongy bone, which is covered by a layer of compact bone. However, the cartilage component is also significant; the anterior ends of the ribs, particularly the costal cartilage, are made of hyaline cartilage. This cartilage connects the ribs to the sternum and allows for flexibility and expansion of the ribcage during breathing.
Even though a lamprey is a slimy little animal they do indeed have a back bone of this back bone unlike most is made of mainly just cartilage.
they are made of cartilage.
Yes, reptiles have most of the same organs as you and I, and are vertebrates, they are not like worms.
cartilage or bone
It consists of bone connected to bone by hyaline cartilage.
It is cartilage until you get to the top of your bridge
Amphibians are vertebrates, meaning they have a backbone. The skeletal system is mostly made up of bone, but also contains some smaller portions of cartilage. Not all vertebrates have bone skeletons, Chondrichthyes (sharks, rays etc.) have skeletons made up entirely of cartilage. Amphibians however do not.