The answer is None, Sharks have a cartilaginous skeleton, which means that their skeleton is made of cartilage rather than bone. Cartilage is a tough, flexible tissue that is more flexible and resilient than bone. Sharks have a similar number of vertebrae to other fish, but they have fewer bones overall because they don’t have bones in their fins or gills. Some sharks do have a few small, isolated bone formations, such as the ammodytes, which are small, calcified structures that support the shark’s teeth. However, for the most part, sharks do not have the same type of bony skeleton that humans and other mammals have.
What is a cartilaginous skeleton?
A cartilaginous skeleton is a type of skeleton that is made up of cartilage rather than bone. Cartilage is a tough, flexible tissue that is more flexible and resilient than bone. It is found in the human body in places such as the ears, the nose, and the intervertebral discs. Cartilage is also the main component of the skeleton of many animals, including sharks, rays, and skates.
One of the main advantages of a cartilaginous skeleton is that it is much lighter than a bony skeleton, which makes it easier for animals with this type of skeleton to move through the water. In addition, cartilage is more flexible than bone, which allows animals with a cartilaginous skeleton to be more agile and to move more easily in tight spaces. However, a cartilaginous skeleton is also more fragile than a bony skeleton and is more prone to injury.
What are ammodytes
Ammodytes are small, calcified structures that are found in some species of shark. They are located in the mouth, and they support the shark’s teeth. Ammodytes are similar to the tooth sockets (alveoli) that are found in the jaws of mammals. In mammals, the alveoli are bony structures that support the teeth, but in sharks, the ammodytes are made of cartilage.
The number and arrangement of ammodytes in a shark’s mouth can vary depending on the species. Some species of shark may have a few large ammodytes that support a single, large tooth, while other species may have many small ammodytes that support several smaller teeth. The shape and size of the ammodytes can also vary depending on the type of shark. In general, ammodytes are an important part of a shark’s anatomy, as they help to support and protect the shark’s teeth.
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