The cartilage discs are the intervertebral discs. These are present to help cushion the bones to prevent the bones grinding into each other (which would cause severe Arthritis by the age of 30 if there were no discs). Also, the discs help keep the spine flexible, so you can bend, turn and twist throughout the neck and torso.
Yes they do. Cartilage is also found in your nose and ears!
Sharks and their relatives have cartilage.
Discs are pads of fiber and cartilage that contain rubbery tissue
They have none since they don't have backbones which are comprised of discs.
fibro cartilage
The discs of cartilage between the vertebrae in the upper part of the neck.
The intervertebral discs are made up of fibrocartilage, which is a type of cartilage that has both collagen fibers and cartilage cells. This fibrocartilage provides strength and cushioning to the intervertebral discs, allowing them to absorb shock and maintain the structure of the spine.
Cartilage
We call cartilage that is high in fiber fibrous cartilage. Fibrous cartilage is found in the intervertebral discs and pubic symphysis.
Sharks are vertebrates (they belong to the phylum Cordata), so they have a spinal chord. However they are also cartilaginous fishes (they belong the the class Chondrichthyes) meaning that their skeleton is made of cartilage instead of bone. They do have a cartilage sheath that surrounds their spinal chord which could be considered a spine. There could be a semantic debate over whether that constitutes a spine, but I for one think it does.
The pads of are located between the vertebrae are called intervertebral discs. These discs act as shock absorbers and provide cushioning between the vertebrae to support the spine's flexibility and movement. Over time, these discs can degenerate, leading to conditions like herniated discs or spinal stenosis.
The intervertebral discs are made of outer annulus fibrosus, which is basically fibrocartilage.