Which connective tissues have no independent blood supply?

The choice indicating that both tendons and ligaments lack an independent blood supply is accurate because these connective tissues rely on surrounding tissues for their nourishment. Tendons connect muscles to bones, while ligaments connect bones to other bones. Both structures are composed primarily of dense connective tissue, which contains a high amount of collagen fibers that provide strength and stability.

One significant aspect of tendons and ligaments is that they are relatively avascular, meaning they have a limited blood supply. Instead of having direct blood flow, they receive nutrients and oxygen through diffusion from nearby tissues, particularly from the synovial fluid or the surrounding muscles and periosteum. This lack of a direct blood supply contributes to a slower healing process in the event of injury, as the limited circulation can hinder the delivery of essential cells and nutrients necessary for repair.

In contrast, other connective tissues, like cartilage, also have limited blood supply but do not fall under the same classification as tendons and ligaments regarding their structural similarities and functional roles in the musculoskeletal system. This understanding reinforces the specific characteristics and roles of these connective tissues in the body.