Do you really need your oblique muscles? Adaptations and exaptations.

BACKGROUND Primitive adaptations in lateral-eyed animals have programmed the oblique muscles to counterrotate the eyes during pitch and roll. In humans, these torsional movements are rudimentary. PURPOSE To determine whether the human oblique muscles are vestigial. METHODS Review of primitive oblique muscle adaptations and exaptations in human binocular… CONTINUE READING