also: はいちょうきん
noun
gastrocnemius muscle
Obsolete anatomical term for the calf muscle; modern Japanese uses 腓腹筋 (ひふくきん).
See also: 腓腹筋
古い解剖学書では「腓腸筋」という表記が見られる。
In old anatomy books, the notation '腓腸筋' can be found.
Modern standard term for the gastrocnemius muscle; 腓腸筋 is an obsolete variant.
The term is composed of 腓 (calf), 腸 (intestines; here possibly used for its shape or as a variant), and 筋 (muscle). The exact derivation is uncertain; it is an obsolete variant of 腓腹筋.