The respiratory, digestive and urinary system are responsible for exchange of materials. What is being exchanged in these different systems and what mechanisms are used to transfer these materials?
2007-05-07 08:09:52 · 3 answers · asked by vanityspice 3 in Science & Mathematics ➔ Biology
Respiratory- carbon dioxide out, oxygen in
Digestive-protein, carbohydrates, minerals in after metabolic breakdown, fiber and waste out.Functions of Digestive Tracts
a) Digestion provides the energy needed to carry out routine metabolic activities and maintain homeostasis.
b) The digestive tract ingests food, breaks down food into small molecules that can cross plasma membranes, absorbs these nutrient molecules, and eliminates nondigestible remains.
Urinary- water in, by products of fatty, carbohydrate and protein metabolism- electrolytes,urea out
2007-05-07 08:20:17 · answer #1 · answered by QuiteNewHere 7 · 0⤊ 1⤋
Each of the three systems exchange different things. That should give you a start.
2007-05-07 15:12:45 · answer #2 · answered by Brian L 7 · 0⤊ 0⤋
Do your own homework, girly girl.
2007-05-07 15:12:08 · answer #3 · answered by Anonymous · 0⤊ 0⤋