I am doing an assignment in science; we are to write about three body systems and how they interact, so how do the digestive, excretory, and endocrine system interact?
i would like to how how they interact.... or any others that would be better ... A.S.A.P :)
There are some better choices—regulatory system would be better than endocrine system in my view, because the endocrine system is rather too complicated for high school analysis, and because it affects every other system as well (nervous, muscular, respiration, circulation, etc.). But given the systems you chose, the relation between the digestive and the excretory systems is actually too close—the excretory system is part of the digestive system, in that it eliminates all the bulk after the nutrients have been extracted. The regulatory system sets “levels” (tolerances) of bladder pressure, etc., while the digestive system transfers those nutrients into the blood circulatory system to nourish all the cells of the body. The most responsive solution to the assigned task might be showing how all the systems interact, trigger, and respond to the others. This is the marvelous physiological body—it is the human mind alone that taxonomizes, that breaks all the functions into “systems” to study them--they actually all function together.