1. Human A & P Digestive System Storybook
“From the table to the toilet….The last journey of a piece of food through the human digestive tract.”
Human A & P
Digestive System Storybook

2. You must acquire this Basic Knowledge before constructing your storybook.
1. What is digestion?
2. Why is digestion important?
3. Name the two different types of digestion and tell how they differ.
4. What are the four phases of digestion? Briefly describe each one and where is occurs at?
5. What enzyme is in the mouth and what does it break down?
6. What enzymes are in the stomach and what do they break down?
7. What is peristalsis? Where does it occur?
8. Write the order of organs food travels through in the digestive system in order! From mouth to anus.
9. Name the circular muscles that regulate the passage of food throughout the digestive path. Name these in order, and what organs they separate.

3. Digestive Enzymes function and location Table
Role
Amalyse
Salivary glands in mouth
Begin digesting starches
Pepsin
Stomach cell secretions
proteins
Pancreatic enzymes
Hepatopancreatic ducts in Small intestines
Fats and carbs
bile
Released by gall bladder through bile duct in small intestine
Fats and proteins

4. Mouth: Esophagus: Mechanical and chemical digestion begins here
Mechanical: chewing with the teeth
Forms bolus – mass of chewed food and saliva
Chemical: Amylase in saliva breaks down carbs
Esophagus:
Epiglottis
covers the opening to the trachea so no food can enter the lungs
Peristalsis
muscle contractions in the esophagus to move the food to the stomach and through the other organs.

5. Stomach Mechanical and chemical digestion takes place
Mechanical: expands and folds
Chemical: Hydrochloric acid: destroys bacteria and helps
break down proteins Pepsin which breaks down proteins
Food is no longer recognizable.
It is now called chyme – liquidfied chemical mix of food and enzymes, the consistency of beginning baby food.

6. Small Intestine 4-7 meters long
pancreatic juices (digestive enzymes from the pancreas and liver) break down fats & sugars
1st part of the intestine where digestion takes place
Bile is added from the liver (stored in the gall bladder) via the bile duct, which breaks down fats
Absorption of nutrients, electrolytes, and little water into the bloodstream begins here
Microvilli – micro projections of the interior lining of the small intestine to increase surface area to facilitate quicker absorption of chemical contents of chime into the bloodstream

7. Large Intestine (colon)
1st portion is small sac-like structure called the cecum. “Pronounced (see-kum)”
Has 4 sections:
Ascending
Transverse
Descending
Sigmoid
Absorbs water from undigested mass of chyme from small intestine
Forms wastes from chyme into solid masses (forms feces)
Rectum
Stores feces
When fecal pressure builds, expanding the lining of the rectum; this triggers the defecation reflex
Feces is eliminated out of the rectum through the anal sphincter muscle

8. Now, your final assignment… “From the table to the toilet…
Now, your final assignment… “From the table to the toilet….The last journey of a piece of food through the human digestive tract.”
Format: Use your knowledge, imagination, and creativeness to write a creative story, song, or a poem to describe the journey of food through the human digestive system.
Role: You are a piece of food, writing one last story about your encounters as you are consumed and digested by a human.
Contents: Be sure to include ALL of the following:
Address all organs involved, and what they do to you
Be sure to mention the sphincter muscles you get forced through along your journey
Address all key enzymes involved, when you encounter them during your journey, and how/what they break you down into.
Address any accessory organs that help with digestion, and when/how they assist
Address the four phases of the digestive system: Ingestion, Digestion, Absorption, and Elimination
Be sure to classify each portion of your journey as mechanical or chemical
This is your last story of your life to tell before you become a ball of waste material. Do not leave any steps of digestion out. Remember the title of your creative writing.
You must have at least two appropriate pictures to accompany your creative work.