the ends of the bones are, yes
The periosteum provides nourishment and attachment sites on bone. Since the ends of bones in synovial joints are covered in hyaline cartilage, they do not need to be covered by the protective layer of periosteum.
synovial c. synovial 8/08 Just took test
Hyaline cartilage normal covers the articular surfaces of bones in typical synovial joints and primary cartilaginous joints. Certail joints do not have hyaline cartilage covering the bony elements. These include: 1. Fibrous Joints - skull sutures, gymphosis (teeth) and interosseus joints (radius and ulna shafts) 2. Atypical Synovial Joints (these have fibrocartilage instead of hyaline cartilage covering the bones). These include the Temporomandibular (TMJ), Acromioclavicular Joint (ACJ), Sternoclavicular Joint, and 2nd to 7th Sternocostal Joints.
Articular cartilage is cartilage which covers the surface of the bone in synovial joints. Its function is to reduce friction between the bones. It is a type of cartilage called hyaline cartilage.
hyaline cartilage
Joints may be synovial (with a cavity) or fibrous. Synovial joints are filled with synovial fluid. Fibrous joints lack this. Fibrous joints are found in between the vertebrae. Cartilage in is both joints. This can be hylaine or fibrocartilage. Both regenerate. The synovial fluid is rather slippery and allows easy movement in those joints. If this joint is suddenly and rapidly pulled, the fluid doesn't fill quickly and a "snapping" sound is heard.
Hyaline cartilage
yes it reduces friction between bones, and also, synovial fluid reduces friction at the joints as well.
hyaline cartilage A Hyaline cartilage, but lacking perichondrion
Light micrograph of hyaline cartilage is a flexible connective tissue. This is including the joints between bones. To maintain this, one would need to take glucosamine chondroitin or something similar.
Hyaline_cartilage_facilitates_move_in_what_joints
Hyaline Cartilage