Digestive System

Standards Standard 10.1 Concepts of Health Growth and Development Structure and Function of Major Body Systems Health Problems Standard 10.2 Healthful Living Health practices and well-being

Digestive System - Functions Digestion 1. Physical and Chemical Breakdown of Food into a form that can be used by the Body - Absorption 2. The passage of digested food from the digestive tract into the circulatory system - Elimination The Expulsion of undigested food or body waste - 3.

Digestive System Food Undergoes 2 kinds of change Physical - Chemical Physical Changes of Food 1. Chewing or Masticating - Chemical Changes of Food 2. Enzymatic breakdown - -

Structures Mouth 1. Pharynx 2. Esophagus 3. Stomach 4. Liver 5. Pancreas 6. Gall Bladder 7. Small Intestines 8. Large Intestines 9. Rectum and Anus 10.

Structures - Mouth Tongue TTTT eeee eeee tttt hhhh – Tear & Grind Food 1. TTTT oooo nnnn gggg uuuu eeee – Taste Buds 2. Sweet, Sour, Bitter, Salty - Salivary Glands – 3 sets 3. Produce Saliva -

Structures - Pharynx Pharynx Back of the T T T T T hhhh rrrr oooo aaaa tttt1. Food is rolled into a Ball (Bolis) 2. Bolis moves to the back of the mouth and is swallowed 3.

Structures - Esophagus PPPP aaaa ssss ssss aaaa gggg eeee wwww aaaa yyyy f f f f from the Throat to the Stomach 1. ~8 inches Long 2. Peristalsis 3. Wave like Contractions that Move Food Towards the Stomach - Esophagus

Structures - Stomach Stomach Location 1. Above waist Below Diaphragm - Size 2. Holds about a Quart - Gastric Juices – Made in the walls of Stomach 3.

Structures – Small Intestines Size Long 1” Diameter - 3 Parts 2. DDDD uuuu oooo dddd eeee nnnn uuuu mmmm – Digestion Complete - JJJJ eeee jjjj uuuu nnnn uuuu mmmm - Absorption - IIII llll eeee uuuu mmmm - Absorption - Small Intestines Function 3. Digest & Absorb -

Structures - Liver Liver Filters Toxins from the blood 1. Makes Bile 2. Breaks down Fats - Gall Bladder Gall BladderAttached under Liver 1. Stores Bile 2. Liver Gall Bladder

Structures - Pancreas Structures - Pancreas Pancreas Size ” Long - 3 Pancreatic Enzymes 2. Trypsin - Proteins - Amylopsoin - Starches - Steapsin - Fats - Insulin – Regulates Sugar 3.

Structures – Large Intestines Large Intestines Large IntestinesSize Feet Long - Function 2. Absorbs Water & Stores Waste -

Magic School Bus Magic School Bus Magic School Bus Magic School Bus Bill Nye Digestion Bill Nye Digestion Bill Nye Digestion Bill Nye Digestion

Metabolism The rate at which your body uses fuel for energy 1. Metabolism converts the fuel in the food we eat into the energy needed to power everything we do. -

Essential Nutrients Proteins 1. Carbohydrates 2. Fats 3. Minerals 4. Vitamins 5.

Nutrient – Proteins Growth and Repair 1. Building Block of Muscle 2. Sources 3. Milk, Cheese - Chicken, Eggs - Meat, Fish -

Nutrient – Carbohydrates Energy 1. Sources 2. Starches - Breads, Cake - Potatoes, Cereals, Pasta - Sugar - Sugar, Syrups - Candy, Fruit -

Nutrient – Fats Energy 1. Sources 4. Butter, Whole Milk - Fat Meats, Nuts - Cushion for Body Organs 2. Warmth 3. Olive Oil -

Nutrient – Minerals Growth 1. Body Tissue 2. Sources 3. Cheese, Milk - Leafy Veggies - Sea Food, Meats - Cereal, Fruits -

Nutrient – Vitamins Growth 1. Body Tissue 2. Sources 3. Citrus Fruits, Whole Grains - Green and Yellow Veggies - Meats, Eggs -

Bill Nye Has something to say Bill Nye Has something to say Bill Nye Has something to say Bill Nye Has something to say Get a Movie Quiz and write your name on it Get a Movie Quiz and write your name on it Quiz is to be completed while watching the movie and handed in by the end of the class Quiz is to be completed while watching the movie and handed in by the end of the class Goals: What do Nutrients do for your body? Goals: What do Nutrients do for your body? What are Calories? What does Fiber do for you? Homework: Bring in old Magazines for next class

Problems Heartburn 1. Acid Backs up from the Stomach to the Esophagus - Burning Sensation - Gas 2. Caused by Diet - Bloated, Uncomfortable -

Nausea & Vomiting 3. Distress, Fullness, Weakness - Vomiting – Reverse Peristalsis, Reflex - Diarrhea 4. Frequent expelling of watery Feces - Dehydration -

Appendicitis 6. Inflammation of Appendix - Pain & Cramps Lower right Abdomen -

Care of the Digestive System Eat a Variety of Food 1. Eat Regular Meals 2. Relax while Eating 3. Do Not Over Eat 4. Drink Plenty of Water 5.