ischium
synchondrosis
Cartilagenous jt.
symphysis menti even though a mid line joint has no fibro cartilage hence it is considered to be a primary cartilagenous joint
neural tissue
True ribs
True Ribs
The intervertebral discs made of cartilage.
so that these cartilagenous rings prevent collapsing of trachea
Ray-finned fish have "true" bone skeletons, where as the cartlaginous fish have...cartilage instead of bone as their skeletons.
No. Marsupials are a division of mammals. A shark is not a mammal at all. It is a cartilagenous fish.
Sharks are fish, cartilagenous fish.