LAB 3: Digestive System

Question 1

Purpose of Digestive System

Answer 1

• take in nutrients
• break them down for the body to process

Question 2

5 stages of digestion

Answer 2

1. Ingestion: taking in the food
2. Digestion:
   A. Mechanical digestion: physically breakdown of food into small particles
   B. Chemical digestion: enzymes and hormones breaking down food into small particles
3. Absorption: nutrients are absorbed into the bloodstream and delivered to tissues & organs throughout the body
4. Compaction: water is reabsorbed in the large intestine to allow solid waste product to form into feces
5. Defecation: feces is eliminated from the anus

Question 3

Digestive system pathway

Answer 3

Mouth - pharynx- esophagus - stomach - small intestine - large intestine - anus