[TA] head of origin that is diagonally situated. Terminologia Anatomica lists oblique heads (caput obliquum ...) of the following: 1) adductor hallucis [TA] (... musculi adductoris hallucis [TA]); and 2) adductor pollicis [TA] (... musculi adductoris pollicis [TA]). SYN: caput obliquum [TA].