Some questions may require several answers.

1. The liver is involved in the excretion process. What is the MOST CORRECT description of its function?

   1.   ?         The liver deaminates some types of proteins to remove ammonia and then produces urea which is taken to the kidney for excretion.
   2.   ?         The liver builds up its water supplies and subsequently transfers it to the kidney for excretion.
   3.   ?         The liver sweats out excess water and creates methane gas which is passed out of the colon.

2. In sport, the liver is a very important organ. Why do you think this is?

   1.   ?         It is responsible for carbohydrate metabolism.
   2.   ?         It ensures there is a clean supply of water.
   3.   ?         It creates sweat.

3. The body needs a good, steady supply of food as fuel for energy if it is to remain active and healthy. Digestion must occur before the fuel can be turned into energy - True or False?

   1.   ?         True
   2.   ?         False

4. When a marathon runner "carbo-loads", the digestive system breaks down high carbohydrate food after making it soluble so that it can pass into the bloodstream. It is then transported to the muscles to create energy for the run.

   1.   ?         True
   2.   ?         False

5. Where does digestion start?

   1.   ?         In the mouth where the saliva and the teeth grind up the food into a pellet which can be swallowed.
   2.   ?         In the gut where the food is chewed up into a smooth paste.
   3.   ?         In the throat where the food is compressed ready for further digestion

6. Which sentence is MOST correct?

   1.   ?         Enzymes in saliva help to turn starchy foods into sugar
   2.   ?         Enzymes in spit help to turn sugar into carbohydrates.
   3.   ?         Enzymes in the gut help to turn food into water.

7. When the food reaches the stomach it is further broken down and passes through the rest of the intestines before it is excreted. True or False?

   1.   ?         True
   2.   ?         False

8. Any undigested waste food passes into the the large intestine where it stays for about twelve hours while more nutrients and water are absorbed into the bloodstream. True or False?

   1.   ?         True
   2.   ?         False

9. Solid remains pass through the last part of the system where they leave the body through the anus. This is called......

   1.   ?         Excretion
   2.   ?         Expulsion
   3.   ?         Expiration
   4.   ?         Perspiration

10. Waste fluids are taken to the kidneys. Here they are filtered and moved to the bladder. This fluid is now ready to be excreted and is called....

    1.   ?         Urine
    2.   ?         Chrisrhea
    3.   ?         Rheamortis
    4.   ?         Urigellar

11. One product of the digestive system is called Amino acids. These help to

    1.   ?         Repair and build new tissues.
    2.   ?         Breakdown tissue in the body.
    3.   ?         Build up the levels of waste water in the bladder.
    4.   ?         Control the rate of excretion.

12. One end product of digestion is sugar. This helps to provide.....

    1.   ?         Energy for physical activity.
    2.   ?         A tasty snack before a race.
    3.   ?         Carbohydrates.

13. Fatty acids are a product of digestion. What is the most likely use for these?

    1.   ?         Long term energy stores.
    2.   ?         Short term energy stores.

14. One form of excretion is where excess water is breathed out. This is called....

    1.   ?         Expiration
    2.   ?         Inspiration
    3.   ?         Perspiration

15. A man of average weight sheds about 18 ounces of water in 24 hours. When this occurs through the skin it is called.......

    1.   ?         Perspiration.
    2.   ?         Expiration.
    3.   ?         Sweating.
    4.   ?         Inhalation.