籽骨 - Ossa sesamoidea
Sesamoid bones are bones embedded within a tendon.
In the hand, two sesamoid bones are commonly found in the distal portions of the first metacarpal bone (within the tendons of adductor pollicis and flexor pollicis brevis). There is also commonly a sesamoid bone in distal portions of the second metacarpal bone.
This definition incorporates text from the wikipedia website - Wikipedia: The free encyclopedia. (2004, July 22). FL: Wikimedia Foundation, Inc. Retrieved August 10, 2004, from http://www.wikipedia.org
大体解剖 > 骨, 骨骼系统 > 附肢骨骼 > 上肢骨, 自由上肢骨 > Pars libera membri superioris > 手骨 > 籽骨