<prompt> Example for Sesamoid bone is:-Riders bone in adductor magnusPisiform in flexor carpi ulnaris.Fabella in medial head of gastrocnemiusOne bone in peronius teius  <response>: Sesamoid bone develops in tendon of muscles which are subjected to friction during the movements. These bones ossify after bih and act as pulleys. These bones are devoid of periosteum and lamellae. Examples are; 1 Patella in quadriceps femoris, 2 Pisiformis in flexor carpi ulnaris 3 Fabella in lateral head of gastrocnemius 4 Riders bone in adductor longus 5 Some unnamed bones in flexor hallucis brevis peroneus longus. 