π Topic Summary
The digestive system is like your body's food processing plant. It breaks down the food you eat into smaller pieces that your body can use for energy, growth, and repair. This process involves several organs working together, from your mouth to your intestines. Understanding how each part functions is key to appreciating how your body gets the nutrients it needs.
This worksheet is designed to help you review the parts and functions of the digestive system. By completing the exercises, you'll reinforce your understanding of this essential biological system. So, grab a pencil and let's dive in!
π§ Part A: Vocabulary
Match the following terms with their definitions:
| Term |
Definition |
| 1. Esophagus |
A. Produces bile to help digest fats |
| 2. Stomach |
B. A long tube that connects the mouth to the stomach |
| 3. Liver |
C. Absorbs water from indigestible food matter |
| 4. Small Intestine |
D. An organ that churns food and mixes it with gastric juices |
| 5. Large Intestine |
E. Where most of the nutrients from food are absorbed |
π Part B: Fill in the Blanks
Complete the following paragraph using the words provided: enzymes, nutrients, digestion, mouth, waste.
The process of __________ begins in the __________ where food is chewed and mixed with saliva. Saliva contains __________ that help break down food. The digestive system extracts __________ from food and eliminates __________.
π€ Part C: Critical Thinking
Explain why the small intestine is so long and has many folds.
β
Answer Key
Part A: Vocabulary
- π 1. Esophagus - B. A long tube that connects the mouth to the stomach
- π‘ 2. Stomach - D. An organ that churns food and mixes it with gastric juices
- π§ͺ 3. Liver - A. Produces bile to help digest fats
- 𧬠4. Small Intestine - E. Where most of the nutrients from food are absorbed
- π 5. Large Intestine - C. Absorbs water from indigestible food matter
Part B: Fill in the Blanks
The process of digestion begins in the mouth where food is chewed and mixed with saliva. Saliva contains enzymes that help break down food. The digestive system extracts nutrients from food and eliminates waste.
Part C: Critical Thinking
The small intestine is long and has many folds to increase the surface area available for nutrient absorption. This maximizes the efficiency of nutrient uptake into the bloodstream.