digestive system (27 feet of gastrointestinal fun) parts and functions
TRANSCRIPT
DIGESTIVE SYSTEM DIGESTIVE SYSTEM (27 FEET OF (27 FEET OF
GASTROINTESTINAL FUN)GASTROINTESTINAL FUN)
Parts and FunctionsParts and Functions
Parts of Digestive (GI) Tract
A. Mouth – breaks food into smaller pieces, mixes with slippery saliva
B. Pharynx – (throat) moves food from mouth
C. Esophagus – Squeezes food down to the stomach by using peristalsis –(muscle contractions to move food)
D.D. StomachStomach – squeezes the food, acid and enzymes break down food into soupy mixture called chyme
E.E. Small IntestineSmall Intestine – absorbs nutrients through villi (finger-like projections)
F.F. Large IntestineLarge Intestine – water is absorbed from undigested food
Parts of Digestive (GI) Tract
G. Rectum – stores waste
H. Anus – eliminates waste
Parts of Digestive (GI) Tract
More Parts…
A. Salivary Glands – amalyse breaks down carbohydrates
B. Liver – makes bile to breaks down fat, stores nutrients, breaks down toxins
C. Gall Bladder – stores bile from liver
D. Pancreas – makes neutralizing liquid and insulin
Mrs. Sime’s Top Five Things That Break It Down.
5. Saliva (amylase) – breaks down carbohydrates
4. Pepsin – breaks down proteins3. Insulin – breaks down sugar2. Bile – breaks down fats1. Will it be YOU?!?!?!?!--------------------------------------------------
What is being digested?
Part
Function
Muscles/ Enzymes Used and Function
Mechanical and/or
Chemical
Sesame- Seed bun
Mouth ChewingStarts break down
food
Amylase: breaks down carbs Both
Esophagus
Pushes food
Sphincter: prevents food from leavingPeristalsis: muscular contractionsEpiglottis: flap of tissue covers trachea
Mechanical
Beef pattiesCheese
Stomach(3-6 hours)
Mixes foodHCl breaks down
food
Acid: mixes with food to make chyme Pepsin: breaks down proteins
Both
CheeseSpecial SauceLettucePicklesOnionsFat
Small Intestine(3-5 hours)*pancreas
*liver*Gall bladder
Absorbs of nutrients and puts into blood
stream
Villi: network of blood vessels Bile: breaks down fat Insulin: breaks down sugar
Mechanical
** Accessory organs are Chemical
Large Intestine(18-24 hours)
Absorbs leftover water in undigested food
Mechanical