Q.1. For the first portion of mission, you are to pilot your sub through the gastrointestinal tract to monitor the digestion of his meal. Explain all major structures you pass by or through, just like a tour guide would do. Also illustrate what happens to the meal during the digestion process. Once you arrive at the distal ileum, go through mucosal membrane and enter the bloodstream via the Superior Mesenteric Vein.

2. Now in bloodstream, you are to go to the left kidney trace your path from the superior mesenteric vein to the left renal artery, via the hepatic portal vein, heart and lungs.

3. Once you've arrived at the kidney, enter the nearest nephron by crossing glomerular membrane into Bowman's capsule. Depict the structures you see, and narrate what happens as you travel through the urinary tract, until you leave the body via the urethra.

4. Wrap up the report by explaining the integration of the body systems in maintaining homeostasis. You should include at least the circulatory, digestive and urinary systems in the explanation.