<prompt> True about synol membrane of knee joint isInvaginated posteriorly by cruciate ligamentExtension into prepatellar bursaCovers inferior surface of both menisciExtension into infrapatellar bursa  <response>: A. i.e. Invaginated posteriorly by cruciate ligament Synol membrane reflects from posterior aspect of joint on to the cruciate ligaments ant. post. making them extrasynol structuresQFour bursae communicate with the synol cavity of knee joint - suprapatellar bursa, popliteal bursa, anserine semimembranosus bursa gastrocnemius bursa.QCruciate ligaments are intraicular or intracapsular but extra synolQ structures.Menisci are intraicular capsular intrasynol structures but its surface has no synol coveringQ. Its upper surface are in contact with femoral condyle lower surface with tibial condyle. 