Left crus意思

"Left crus" is a term used in anatomy to refer to the left crus of the cluneal (or coccygeal) triangle, which is a region of the human body located at the base of the spine. The cluneal triangle is formed by three muscles: the gluteus maximus, the external oblique, and the transversus abdominis. The left crus is one of the three points of the triangle, and it represents the left side of the base formed by the two crura (singular: crus).

The term "crus" is Latin for "leg" or "stalk," and in this context, it refers to the leg-like structure that supports the coccyx (tailbone). The left crus is the part of the left side of the pelvic bone that helps form the base of the cluneal triangle.

It's important to note that while "left crus" is a term used in anatomy, it is not a commonly used term in everyday language or in most medical contexts. It is more likely to be encountered in anatomical textbooks or during a medical education.