5

Yes, Osteichthyes do have cartilage. For example, Ancient origin of lubricated joints in bony vertebrates shows images of cartilaginous tissue in the joints of several bony fish. More generally, cartilage is required for normal bone development, and Osteichthyes are no exception (e.g. Distinct patterns of notochord mineralization in zebrafish coincide with ...


4

The reason that cartilage rarely is able to regenerate is that it is poorly vascularized and innervated. It doesn't have its own blood supply to deliver signaling molecules that promote regeneration and repair after injury. There has been some recent progress on getting the body to repair and replace cartilage with lab created biogels detailed here.


3

The process is called endochondral ossification. It is important to point out that not all bone is derived from cartilage. For example, when a bone is fractured and is healing, the new bone does not always come from cartilage, rather intramembranous ossification occurs. There are therefore multiple mechanisms at a microscopic level by which bone may form. ...


3

Not that I'm aware of. There isn't any blood flow to either tendons or cartilage as an adult, so the pathway for migration doesn't exist. Tendons and cartilage are tissues composed of dead cells after their formation (the cartilage growth plates cease to exist in your teen and completely ossify, tendons I'm not sure on). Damage to tendons and cartilage is ...


1

This depends on what kind of cartilage you are examining and where it is located. Cartilage is not all the same depending on where it is located and it's intended purpose. Cartilage also generally exists as a continuum with the bone that it is attached to where you will see transitional changes from bone tissue to cartilage without specific delineation. ...


1

I also had this relevant problem, when I was learning about cartilage tissue. Generally, cartilage tissue has no blood supply. But it is a traversable tissue, therefore nutrients, and breathing gases can enter into the tissue without any problem. But the problem is how does it immunized while there is not containing of lymphatic cells. The ...


1

True cartilage is something of a simplification or a misnomer, they are saying that it truly a form of cartilage and not another elastic tissue type. in fact "true cartilage" is a term coined by your book. They could have also said it's part of the cartilage family of cell/tissue types. It's similar to cartilage under a microscope, structurally and has ...


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