Synovial bursas are slender-walled sacs which are interposed between tissues such as tendons, muscles, and bones and are lined with synovial membrane. In human beings a majority of synovial bursas are located near the massive joints of the arms and legs. Submuscular bursas are located involving muscles and bony prominences https://www.youtube.com/channel/UCL4WhU7Ns9DQCsh8E4H-fVA