Digestion and getting rid of waste

Grade 7 Science Worksheet

Circle the best answer.

1. 1.

   Ari's food path reads: mouth → esophagus → ? → small intestine. What fills the blank?

   • Liver
   • Stomach
   • Large intestine
   • Lungs
2. 2.

   Bo's food path reads: stomach → ? → large intestine. What fills the blank?

   • Small intestine
   • Esophagus
   • Kidneys
   • Pancreas
3. 3.

   Esme's food path reads: mouth → ? → stomach → small intestine. What fills the blank?

   • Small intestine
   • Gallbladder
   • Windpipe
   • Esophagus
4. 4.

   Jun reads that the liver helps digest fats. Does food pass through the liver on its way to the intestines?

   • Yes: food goes from the stomach into the liver
   • Yes: food waits in the liver until bile is ready
   • No: the liver makes urine instead
   • No: bile flows in through ducts
5. 5.

   Kira studies the gallbladder, a small pouch under the liver. What is its job?

   • It filters waste out of the blood
   • It takes in water from the leftover waste
   • It stores food between meals
   • It stores bile and squeezes it out at meals
6. 6.

   Luz's pancreas makes a digestive juice during a meal of rice and beans. Where does the juice go?

   • Into the kidneys to make urine
   • Through ducts into the small intestine
   • Into the large intestine to take in water
   • Nowhere: the food comes to the pancreas
7. 7.

   Milo's carrot is broken into nutrients. Where does the body absorb most of them into the blood?

   • In the esophagus
   • In the stomach
   • In the large intestine
   • In the small intestine
8. 8.

   The small intestine's lining has millions of tiny finger-like villi. Why do the villi help Pia absorb nutrients from grapes?

   • They are not needed, as the stomach takes in most nutrients
   • They grind the grapes like teeth
   • They take in just water; the large intestine takes nutrients
   • They add surface, so more nutrients pass in
9. 9.

   During Ren's run, cells make wastes that travel in the blood. How do the kidneys remove them?

   • They filter the blood and make urine
   • They send the waste back to the stomach
   • They breathe the waste out as a gas
   • They take waste out of the small intestine
10. 10.

    Urine leaves one of Tala's kidneys. Where does it go next?

    • Down a ureter to the bladder
    • Up to the lungs to be breathed out
    • Into the large intestine with food leftovers
    • Back to the stomach