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Answer:

1. Where does digestion start?

• the initial digestion happens at the mouth. It is where the food is broken in to small pieces through chewing and grinding. This digestion is called mechanical digestion.

2. How does the digestion take place?

• the digestion takes place when the food was initially broken down into pieces at the mouth. The food will move through the esophagus until to the GI tract where the entire digestion will occur and the chemical digestion takes place.

3. In tracing the parts of the digestive system, name the parts that your thread travelled starting from the mouth up to the last part.

• Here's the pathway of the food from the mouth up to stomach: mouth > esophagus >stomach> small intestine > large intestine> anus

4. Explain the major functions of each part of the digestive system.

》mouth — food is broken down into pieces

Esophagus — receives food from the mouth

》Stomach — responsible for mixing chemical (gastric. juices). Temporary storage of food.

》Small intestine— absorbs nutrients from foods into the blood streams

》Large intestine — digested the remaining foods from the small intestine

》Rectum-Anus — passageway of waste or the stool.

5. What may happen if the body was not able to absorb nutrients from the food?

• if the body was not able to absorb all the nutrients from the digested food, then the body will lack of necessary nutrients needed for survival. The human body is also prone to any diseases.

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