It allows your rib cage to move when the lungs inhale and exhale
A shark's "skeleton" is made of cartilage while human skeleton is made of bone.
There are 3 type of cartilage present in the human body
In your nose and ears.
Cartilage.
Dolphin skeletons are not made of bones like most mammals. Instead their skeleton is made of a tough, flexible tissue called cartilage. It is the same thing that human ears are made of.
trachea, larynx and tip of nose
Cartilage has many purposes in the human body. Cartilage is a tissue that prevents bones from rubbing together. Cartilage also connects the ribs to the sternum in the human body.
At birth, the majority of the human skeleton is mineralized bone, although there are still cartilage growth plates in all the long bones.
Different bones...
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A human skeleton that is taken apart is often referred to as an "articulated skeleton" if the bones are connected in their natural positions, or a "disarticulated skeleton" if the bones are separated. Disarticulated skeletons are commonly used in anatomical studies and for educational purposes. They can provide valuable insights into human anatomy and skeletal structure.
An endoskeleton is an internal skeleton found in vertebrates, like humans, composed of bones and cartilage. Conversely, a human skeleton specifically refers to the endoskeleton of the human body. The main difference would be in the specific structures composing each skeleton, but both serve to support and protect the body.