Directive Mesenteries: Directive mesenteries, which are situated in the directive axis, have their longitudinal muscles (retractors) on their outer sides turned towards the exocoels.

See also Mesenterial arrangement

See also Mesenterial Muscles

See also Incomplete Mesenteries.

See also Complete Mesenteries.

See also Perfect Mesenteries.

See also Imperfect Mesenteries.