［指節骨］底 - Basis phalangis
Proximal extremities of phalanges :
The proximal extremities of the bones of the first row present oval, concave articular surfaces, broader from side to side than from before backward.
The proximal extremity of each of the bones of the second and third rows presents a double concavity separated by a median ridge.
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
一般解剖学 > 骨、骨格系 > 付属肢骨格 > 上肢骨 > 自由上肢 > 手の骨 > 指骨；指節骨 > ［指節骨］底