Biology: Digestive and Excretory Systems Study Guide

1. 	A car is to gasoline as your body is to _____________________.

2.	 Substances that are needed by the body for growth, repair, and maintenance are called ___________________.

3. 	What “food tube” carries food between the pharynx and the stomach?

4. 	Does the pancreas produce bile?

5. 	Where does the process of chemical digestion begin?

6. 	What does mechanical digestion in the stomach involve?

7. 	The stomach breaks down food into a soft, partially digested mixture called?

8. 	Through which structure do wastes pass into the rectum?

9. 	Water is extracted from digested food in the body primarily by what part of the intestine?

10. 	The function of the excretory system is to control homeostasis and __________________.

11. 	What are the main organs of the excretory system (hint: you have 2 of them)?

12. 	What are the major parts of a nephron?

13. 	In the kidneys, both useful substances and wastes are removed from the blood by which process (filtration, re-absorbtion, or excretion)? 

14. 	Does the process of dialysis return filtered blood to the body?

15. 	Dialysis performs the function of the which organ in the body?

16. 	What materials are removed from the blood through dialysis?

17. 	What is the name of the muscle contractions that allow food to travel through your esophagus into the stomach?

18. 	Are digestive enzymes are necessary for mechanical digestion?

19. 	If too little water is absorbed from your large intestine, would you get constipated or diarrhea?

20. Does 	Excretion helps to maintain the body’s homeostasis?