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DIGESTION OF ORGANIC COMPOUNDS

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Page 1: Digestion a. Breakdown ingested food to acquire energy b. Chemical Digestion: c. Mechanical Digestion:

DIGESTION OF ORGANIC COMPOUNDS

WHAT IS DIGESTION?

Digestiona. Breakdown ingested food to acquire

energyb. Chemical Digestion:c. Mechanical Digestion:

PROCESS DURING DIGESTION

1. Ingestion2. Secretion3. Mixing and propulsion4. Digestions: mechanical and chemical5. Absorption6. Release of Wastes

Page 4: Digestion a. Breakdown ingested food to acquire energy b. Chemical Digestion: c. Mechanical Digestion:

Page 5: Digestion a. Breakdown ingested food to acquire energy b. Chemical Digestion: c. Mechanical Digestion:

STRUCTURES USED IN CHEWING

1. Chewing by teeth2. Saliva is mixed w/ food

1. contains enzyme: salivary amylase

3. Tongue functions to swallow food

Page 6: Digestion a. Breakdown ingested food to acquire energy b. Chemical Digestion: c. Mechanical Digestion:

PATH TO STOMACH

1. Esophagus: muscles move food to stomach

2. Stomach: 1. HCL bath2. Enzyme: pepsin- breakdown proteins

Page 7: Digestion a. Breakdown ingested food to acquire energy b. Chemical Digestion: c. Mechanical Digestion:

Page 8: Digestion a. Breakdown ingested food to acquire energy b. Chemical Digestion: c. Mechanical Digestion:

INTESTINES

1. Small Intestine: Site of nutrient absorption into body

a) Enzymes from the pancreas are added for further breakdown starch, proteins, fats, and nucleic acid

b) Maltase, sucrase, lactase break disaccharides

c) Peptidase breaks dipeptides

2. Large Intestine: Absorption of water

Page 9: Digestion a. Breakdown ingested food to acquire energy b. Chemical Digestion: c. Mechanical Digestion:

ORGANS THAT HELP

Pancreas: releases enzymes to SI to break starches, proteins, fats and nucleic acids

Liver: secrets bile to break fat, stores glycogen and fat reserves

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