Ecology
A branch of science concerned with the interrelationship of organisms and their environments; the totality or pattern of relations between organisms and their environment; an often delicate or intricate system or complex.

Paradoxical contraction (of Pelvic Floor Muscles)
Contraction of the muscles of the pelvic floor when they should be relaxing, for example, tightening the muscles around the anus while trying to have a bowel movement.

Pelvic floor muscle dysfunction
A condition in which the muscles of the pelvic floor do not contract or relax properly. It may include muscle spasm, weakness or muscle incoordination.