the digestive system. function to break down foods into molecules small enough to be transported to...

The Digestive System

FunctionTo break down foods into molecules small

enough to be transported to and absorbed by cells (for cellular respiration!).

NoteworthyMechanical Digestion vs. Chemical Digestion

Ex: stomachacid

Ex: chewing

Ex: saliva

Noteworthy:Path of food:1. Mouth2. Esophagus3. Stomach4. Small Intestine5. Large Intestine6. Rectum7. Anus

Major Organs/Key PlayersEsophagus: Lined with smooth (involuntary) muscle to help send food to stomach. Wave like muscle contractions are called peristalsis.

Major Organs/Key PlayersThe Small Intestine:Absorbing nutrients

Villi: folds that increase surface area

for absorption

Major Organs/Key PlayersThe Large Intestine:Absorbing water

Major Organs/Key Playersaccessory organs help with digestion by releasing digestive enzymes and/or hormones. - Salivary glands- Pancreas- Liver- Gall bladder

Noteworthy:Labeling the parts:

DiseasesDiarrhea

Cause: -bacteria-parasite-virus

Effect: Too much waterin stool; dehydration

DiseasesHeartburn

Cause: Acid in stomach goes intoesophagusEffect: Burningfeeling inchest

Brain Pop

• Appendix• Digestive System