Take notes on the slides. Make sure your diagram is labeled through the last slide here. Test over digestive system is on Thursday—will be over diagram.

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Digestive System

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Presentation transcript:

Take notes on the slides. Make sure your diagram is labeled through the last slide here. Test over digestive system is on Thursday—will be over diagram and the functions of the digestive system parts.

Stomach: A saclike part of the alimentary canal in which food is stored. Copyright © 2010 Ryan P. Murphy

Stomach: A saclike part of the alimentary canal in which food is stored. Copyright © 2010 Ryan P. Murphy

Stomach: A saclike part of the alimentary canal in which food is stored. Copyright © 2010 Ryan P. Murphy

Cells in the stomach wall release a chemical gastric juice (Pepsin – enzyme) and thick slippery mucous to protect stomach. Copyright © 2010 Ryan P. Murphy

Cells in the stomach wall release a chemical gastric juice (Pepsin – enzyme) and thick slippery mucous to protect stomach. – Pepsin contains hydrochloric acid. Copyright © 2010 Ryan P. Murphy

The stomach churns the food (mechanical) while the gastric juices break down the food chemically. (Smooth Muscle) Copyright © 2010 Ryan P. Murphy

Heartburn / upset stomach is that acid making its way up the esophagus. Copyright © 2010 Ryan P. Murphy

Heartburn / upset stomach is that acid making its way up the esophagus. – Antacid tablets help to neutralize the acid with a base. Copyright © 2010 Ryan P. Murphy

Heartburn / upset stomach is that acid making its way up the esophagus. – Antacid tablets help to neutralize the acid with a base. Copyright © 2010 Ryan P. Murphy

Heartburn / upset stomach is that acid making its way up the esophagus. – Antacid tablets help to neutralize the acid with a base. Copyright © 2010 Ryan P. Murphy Acid

Heartburn / upset stomach is that acid making its way up the esophagus. – Antacid tablets help to neutralize the acid with a base. Copyright © 2010 Ryan P. Murphy Acid Base Gastric Juices

The Pyloric valve is a strong ring of smooth muscle that lets food pass from the stomach to the duodenum. Copyright © 2010 Ryan P. Murphy

How long does gum stay in your stomach if you swallow it? Copyright © 2010 Ryan P. Murphy

How long does gum stay in your stomach if you swallow it? – A.) Your entire life? Copyright © 2010 Ryan P. Murphy

How long does gum stay in your stomach if you swallow it? – A.) Your entire life? – B.) 7 years Copyright © 2010 Ryan P. Murphy

How long does gum stay in your stomach if you swallow it? – A.) Your entire life? – B.) 7 years – C.) 7 months Copyright © 2010 Ryan P. Murphy

How long does gum stay in your stomach if you swallow it? – A.) Your entire life? – B.) 7 years – C.) 7 months – D.) A few hours Copyright © 2010 Ryan P. Murphy

How long does gum stay in your stomach if you swallow it? – A.) Your entire life? – B.) 7 years – C.) 7 months – D.) A few hours – E.) It digests immediately Copyright © 2010 Ryan P. Murphy

How long does gum stay in your stomach if you swallow it? – A.) Your entire life? – B.) 7 years – C.) 7 months – D.) A few hours – E.) It digests immediately Copyright © 2010 Ryan P. Murphy

How long does gum stay in your stomach if you swallow it? – A.) Your entire life? – B.) 7 years – C.) 7 months – D.) A few hours – E.) It digests immediately Copyright © 2010 Ryan P. Murphy

Gum, like most materials, passes through your stomach and into your intestine.

Some parts of the gum are digested (sugars) while the rest comes out the other end (resins).

From the stomach to the anus is known as the Gastrointestinal Tract or GI Tract. Copyright © 2010 Ryan P. Murphy

From the stomach to the anus is known as the Gastrointestinal Tract or GI Tract. Copyright © 2010 Ryan P. Murphy

Activity! Step by step drawing of the Digestive System.

“Can we label some parts already?”

Copyright © 2010 Ryan P. Murphy

Note how the GI Tract coils around so that its incredible length can fit into an area so small. Copyright © 2010 Ryan P. Murphy

Note how the GI Tract coils around so that its incredible length can fit into an area so small. Copyright © 2010 Ryan P. Murphy

Note how the GI Tract coils around so that its incredible length can fit into an area so small. Copyright © 2010 Ryan P. Murphy

Note how the GI Tract coils around so that its incredible length can fit into an area so small. orm Copyright © 2010 Ryan P. Murphy

Note how the GI Tract coils around so that its incredible length can fit into an area so small. orm Copyright © 2010 Ryan P. Murphy

Note how the GI Tract coils around so that its incredible length can fit into an area so small. orm ollows Copyright © 2010 Ryan P. Murphy

Note how the GI Tract coils around so that its incredible length can fit into an area so small. orm ollows Copyright © 2010 Ryan P. Murphy

Note how the GI Tract coils around so that its incredible length can fit into an area so small. orm ollows unction Copyright © 2010 Ryan P. Murphy

Note how the GI Tract coils around so that its incredible length can fit into an area so small. orm ollows unction Copyright © 2010 Ryan P. Murphy

Why not add the juices here?

If the chemical enzymes were added at the end of the GI tract the food would not be broken down and absorption of nutrients would be difficult.

Duodenum: The beginning of the small intestine. Copyright © 2010 Ryan P. Murphy

Duodenum: The beginning of the small intestine. – Distributes bile Copyright © 2010 Ryan P. Murphy

Duodenum: The beginning of the small intestine. – Distributes bile (produced by the liver and stored in the gall bladder), Copyright © 2010 Ryan P. Murphy

Duodenum: The beginning of the small intestine. – Distributes bile (produced by the liver and stored in the gall bladder), pancreatic acids (pancreas), Copyright © 2010 Ryan P. Murphy

Duodenum: The beginning of the small intestine. – Distributes bile (produced by the liver and stored in the gall bladder), pancreatic acids (pancreas), and other secretions to chemically breakdown food. Copyright © 2010 Ryan P. Murphy

Small Intestine: Major organ for food absorption. Copyright © 2010 Ryan P. Murphy

Small Intestine: Major organ for food absorption. Copyright © 2010 Ryan P. Murphy

Small Intestine: Major organ for food absorption. Very Long 15 ft / 4.5 m Copyright © 2010 Ryan P. Murphy

Small Intestine: Major organ for food absorption. Very Long 15 ft / 4.5 m Copyright © 2010 Ryan P. Murphy

Small Intestine: Major organ for food absorption. Very Long 15 ft / 4.5 m orm Copyright © 2010 Ryan P. Murphy

Small Intestine: Major organ for food absorption. Very Long 15 ft / 4.5 m orm ollows Copyright © 2010 Ryan P. Murphy

Small Intestine: Major organ for food absorption. Very Long 15 ft / 4.5 m orm ollows unction Copyright © 2010 Ryan P. Murphy

Small Intestine: Major organ for food absorption. Very Long 15 ft / 4.5 m orm ollows unction Copyright © 2010 Ryan P. Murphy

Pancreas: Organ that aids in digestion by producing pancreatic juices that enter small intestine. Copyright © 2010 Ryan P. Murphy

Pancreas: Organ that aids in digestion by producing pancreatic juices that enter small intestine. – Also aids in producing hormones. Copyright © 2010 Ryan P. Murphy

Pancreas: Organ that aids in digestion by producing pancreatic juices that enter small intestine. – Also aids in producing hormones. Copyright © 2010 Ryan P. Murphy

The Liver and Gall Bladder are organs that aid in the digestion process. Copyright © 2010 Ryan P. Murphy

The Liver and Gall Bladder are organs that aid in the digestion process. Copyright © 2010 Ryan P. Murphy

The Liver and Gall Bladder are organs that aid in the digestion process. Copyright © 2010 Ryan P. Murphy

Liver: Large, heavy, vital organ that produces bile that breaks down fats. – Also detoxifies chemicals – Synthesizes proteins – Stores Glycogen (energy) – Decomposes red blood cells – Hormone production Copyright © 2010 Ryan P. Murphy

Liver: Large, heavy, vital organ that produces bile that breaks down fats. – Also detoxifies chemicals – Synthesizes proteins – Stores Glycogen (energy) – Decomposes red blood cells – Hormone production Copyright © 2010 Ryan P. Murphy

Liver: Large, heavy, vital organ that produces bile that breaks down fats. – Also detoxifies chemicals Copyright © 2010 Ryan P. Murphy

Liver: Large, heavy, vital organ that produces bile that breaks down fats. – Also detoxifies chemicals – Synthesizes proteins Copyright © 2010 Ryan P. Murphy

Liver: Large, heavy, vital organ that produces bile that breaks down fats. – Also detoxifies chemicals – Synthesizes proteins – Stores Glycogen (energy) Copyright © 2010 Ryan P. Murphy

Liver: Large, heavy, vital organ that produces bile that breaks down fats. – Also detoxifies chemicals – Synthesizes proteins – Stores Glycogen (energy) – Decomposes red blood cells – Hormone production Copyright © 2010 Ryan P. Murphy

Liver: Large, heavy, vital organ that produces bile that breaks down fats. – Also detoxifies chemicals – Synthesizes proteins – Stores Glycogen (energy) – Decomposes red blood cells – Hormone production Copyright © 2010 Ryan P. Murphy

Liver: Large, heavy, vital organ that produces bile that breaks down fats. – Also detoxifies chemicals – Synthesizes proteins – Stores Glycogen (energy) – Decomposes red blood cells – Hormone production It’s difficult to live long term without a liver because it performs so many functions. Copyright © 2010 Ryan P. Murphy

Gall Bladder: A small pear-shaped organ that stores and concentrates bile from the liver. Copyright © 2010 Ryan P. Murphy

Gall Bladder: A small pear-shaped organ that stores and concentrates bile from the liver. Copyright © 2010 Ryan P. Murphy