Imperfect Mesenteries:Mesenteries extending from the column wall into the coelenteron that are not attached to the actinopharynx (Carlgren, 1949: p. 8). This term is used in older literature. The recent term is incomplete.

This is a picture of the mesenteries below the level of the Actinopharynx. The Imperfect mesenteries are those marked with twos and threes.

See also Mesenterial arrangement

See also Mesenterial Muscles

See also Incomplete Mesenteries.

See also Complete Mesenteries.

See also Directive Mesenteries.

See also Perfect Mesenteries.