It is accompanied by a deep vein, the posterior tibial vein, along its course. ??? ??? ??? Pronator pronator teres is a muscle of the human body (located mainly in the forearm) that, along with the pronator quadratus muscle, serves to pronate the forearm (turning it so the palm faces posteriorly). ??? ??? ??? Psoas Major Muscle The psoas major is a long fusiform muscle placed on the side of the th