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INTRODUCTION TO THE DIGESTIVE SYSTEM
From food to Fuel
VIDEO CLIP
Digestion Video Clip
WHAT DO YOU KNOW ABOUT THE DIGESTIVE SYSTEM?
What are the functions of the digestive system?
What organs are included in this system? What do they do specifically?
OVERVIEW OF THE DIGESTIVE SYSTEM
GI/Digestive System digests food and transports nutrients into the blood
Breaks down food chemically and mechanically to promote absorption through the digestive tract wall (epithelium) and into the blood or lymph Proteins, lipids and carbs must be digested
to be absorbed Vitamins and minerals can be absorbed
directly into the body from the digestive system
Both secretions and muscular action of the digestive system are needed
OVERVIEW OF THE DIGESTIVE SYSTEM
Hunger and satiety controlled by hormones and other chemicals that affect the hypothalamus control centre for ingestion Social factors and availability
Digestive system consists: of two components: The Alimentary canalAccessory organs
Food is ingested processed in the digestive tract→ undigested food leaves the system as feces
LABEL THE DIAGRAM
FOR NEXT CLASS PLEASE WATCH
http://www.pennmedicine.org/encyclopedia/em_DisplayAnimation.aspx?gcid=000097&ptid=17
What is this tissue? How do you know?