the digestive system
DESCRIPTION
The Digestive System. by: Ms. De Bell. The Digestive System. The Digestive System breaks food into nutrient molecules. These molecules are a bsorbed into the blood stream. The Digestive System eliminates the indigestible waste. . You ARE what you Eat !. T able of Cont ent s. - PowerPoint PPT PresentationTRANSCRIPT
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The Digestive System
by: Ms. DeBell
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The Digestive System breaks food into nutrient molecules. These molecules are absorbed into the blood stream. The Digestive System eliminates the
indigestible waste.
You ARE what you Eat!
The Digestive System
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Table of Contents
DIGESTIVE PROCESSES
The Digestive Process with Dr. Stocker
Importance
The Players
Please click on each of the pictures to explore your digestive system.
Click here to return to the start
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The various players of the Digestive System can be divided in two :
1. The Alimentary Canal
2. Accessory Digestive Organs and Digestive Glands
The Players
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Digestive Tract
1. Alimentary Canal
2. Accessory Digestive Organs and
Alimentary CanalAKA: The Gastrointestinal (GI) Tract
The alimentary canal is the muscular digestive tube that winds through the body
Food Material in the alimentary canal is technically considered to be outside the body because the canal is open to the external environment at both ends.
Includes:Mouth
PharynxEsophagusStomach
Small IntestineLarge Intestine
Anus
Just remember: My purple elephant sleeps inside icy airplanes. My purple elephant sleeps inside icy airplanes. My purple elephant sleeps inside icy airplanes. My purple elephant sleeps inside icy airplanes. My purple elephant sleeps inside icy airplanes. My purple elephant sleeps inside icy airplanes. My purple elephant sleeps inside icy airplanes.
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Digestive Tract
1. Alimentary Canal a. Mouth
2. Accessory Digestive Organs and Digestive Glands
MOUTHMy…..
• Food enters the alimentary canal via mouth
• Food is chewed, manipulated by the tongue, and moistened with saliva
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx
2. Accessory Digestive Organs and Digestive Glands
PHARYNXMy purple…..
Passage way of food, fluids, and inhaled air.
The Pharynx is made of three muscles. The muscles are like three stacked clutching fists. The muscles contract in sequence from superior to inferior to squeeze food in to the esophagus.
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus
2. Accessory Digestive Organs and Digestive Glands
ESOPHAGUS
My purple elephant…..
A muscular tube that propels swallowed food to the stomach
Sphincter(def.) A muscle surrounding an opening; acts as a valve to close and open the orifice. Think of a draw string back. The string around the opening acts to open and close the bag depending on whether its contracted or lose.
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus d. Stomach
2. Accessory Digestive Organs and Digestive Glands
STOMACHMy purple elephant sleeps…..
A temporary storage tank in which food is churned and turned into a paste called chyme “juices”.
The stomach is the first site where food begins to break downSome, although little, nutrients is absorbed in the stomach
Food hangs out in the stomach for about 4 hours; just about as long as you study for my class every night!
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus d. Stomach e. Small Intestine
2. Accessory Digestive Organs and Digestive Glands
SMALL INTESTINEMy purple elephant sleeps inside…..
L o n g e s t part of the alimentary canal
This is the site where most of the enzymatic digestion and virtually all absorption of your pizza occurs
It’s important to note that although most digestive enzymes break down food here, enzymes are actually secreted by the pancreases
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus d. Stomach e. Small Intestine f. Large Intestine
2. Accessory Digestive Organs and Digestive Glands
LARGE INTESTINEMy purple elephant sleeps inside icy…..
Gunk remains here for 12-24 hours!
The large intestines absorb water and electrolytes from digested mass, resulting in semi- solid feces.
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus d. Stomach e. Small Intestine f. Large Intestine G. Anus
2. Accessory Digestive Organs and Digestive Glands
ANUSMy purple elephant sleeps inside icy airplanes.
The opening at the end of the alimentary canal where feces exits
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus d. Stomach e. Small Intestine f. Large Intestine G. Anus
2. Accessory Digestive Organs and Digestive Glands a. Organs b. Glands
Accessory Digestive Organs and Digestive Glands
Organ (def.) a part of the body formed of two or more tissues and adapted to carry out a specific function
Gland (def.) a structure whose cells are specialized for secretion
Digestive OrgansTeeth
Tongue Gallbladder
Digestive Glands
Salivary GlandLiver
Pancreas
Just remember… Ten tall giraffes smell like pancakes!
Ten tall giraffes smell like pancakes! Ten tall giraffes smell like pancakes! Ten tall giraffes smell like pancakes! Ten tall giraffes smell like pancakes!Ten tall giraffes smell like pancakes! Ten tall giraffes smell like pancakes!
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus d. Stomach e. Small Intestine f. Large Intestine G. Anus
2. Accessory Digestive Organs and Digestive Glands a. Organs i. Teeth
Ten…
TEETH{ORGAN}
Blades that tear and grind food in to smaller fragments
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus d. Stomach e. Small Intestine f. Large Intestine G. Anus
2. Accessory Digestive Organs and Digestive Glands a. Organs i. Teeth ii. Tongue
Ten tall…
TONGUE{ORGAN}
Occupies the floor of your mouth is a muscle constructed of skeletal muscle fiber
Your tongue is important because it grips and constantly repositions food in between teeth. It also helps mix food with saliva to get a
compact mass, bolus.
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus d. Stomach e. Small Intestine f. Large Intestine G. Anus
2. Accessory Digestive Organs and Digestive Glands a. Organs i. Teeth ii. Tongue iii. Gall Bladder
Ten tall giraffes…
GALLBLADDER{ORGAN}
The gall bladder stores and concentrates bile
Bile is a greenish fluid secreted by the liver, stored in the
gallbladder, and released in to the small intestine; helps start the
break down of fats
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus d. Stomach e. Small Intestine f. Large Intestine G. Anus
2. Accessory Digestive Organs and Digestive Glands a. Organs i. Teeth ii. Tongue iii. Gall Bladder b. Glands i. Salivary Glands
Ten tall giraffes smell…
SALIVARY GLAND{GLAND}
Salivary glands produce saliva
Saliva moistens the mouth, dissolves food chemicals so they can be tasted, wets food, binds the food together into a bolus.
Saliva~ a complex mixture of water, ions, mucus, and enzymes
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus d. Stomach e. Small Intestine f. Large Intestine G. Anus
2. Accessory Digestive Organs and Digestive Glands a. Organs i. Teeth ii. Tongue iii. Gall Bladder b. Glands i. Salivary Glands ii. Liver
Ten tall giraffes smell like…
LIVER{GLAND}
The liver is the LARGEST gland in the body, it weighs about 3Ibs in average adult (pick up your science book)
The liver has many functions…..
•The liver produces bile
•The liver picks up glucose from the blood supply of the alimentary canal and stores it as glycogen
Remember….Bile is a greenish fluid secreted by the liver,
stored in the gallbladder, and released in to the small intestine;
helps start the break down of fats
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Digestive Tract
1. Alimentary Canal a. Mouth b. Pharynx c. Esophagus d. Stomach e. Small Intestine f. Large Intestine G. Anus
2. Accessory Digestive Organs and Digestive Glands a. Organs i. Teeth ii. Tongue iii. Gall Bladder b. Glands i. Salivary Glands ii. Liver iii. Pancreas
Ten tall giraffes smell like pancakes.
PANCREAS{GLAND}
Secretes enzymes in to the small intestine for enzymatic digestion
Produces hormones (insulin and glucagon) which regulate the levels of sugar in the blood
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DIGESTIVE PROCESSES
The digestive system performs the following essential food- processing activities…..
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DIGESTIVE PROCESSES:INGESTION
Is the taking of food in to the mouth
INGESTION
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DIGESTIVE PROCESSES:INGESTION
PROPULSION
The movement of food through the alimentary canal.Alimentary Canal = (My purple elephant sleeps inside icy airplanes)
PROPULSION
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DIGESTIVE PROCESSES:INGESTION
PROPULSIONMECHANICAL DIGESTION
Physically prepares food for chemical digestionIncludes: Chewing
Churning in the stomachSegmentation ( the rhythmic local constrictions of the intestines)
MECHANICAL DIGESTION
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DIGESTIVE PROCESSES:INGESTION
PROPULSIONMECHANICAL DIGESTION
CHEMICAL DIGESTIONA series of steps on which complex food molecules are
broken down in to their chemical building blocks
Process is carried out by enzymes
CHEMICAL DIGESTION
Food Molecule Chemical Building Block Carbohydrates Sugar Proteins Amino Acids Lipids Fatty Acids and Glycerol
(respectfully)
Food Molecules get broken down
in to chemical building blocks your bodyutilizes to carry out metabolic process….
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DIGESTIVE PROCESSES:INGESTION
PROPULSIONMECHANICAL DIGESTION
CHEMICAL DIGESTIONABSORPTION
Is the transport of digested end products from the alimentary canal in to the blood and lymph capillaries
ABSORPTION
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DIGESTIVE PROCESSES:INGESTION
PROPULSIONMECHANICAL DIGESTION
CHEMICAL DIGESTIONABSORPTIONDEFECATION
The elimination of indigestible substances from the body as feces
DEFECATION
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The Digestive Process with Dr.
Stocker
Insert Dr. Stocker’s photo here or the
principals photo for example
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The Digestive Process with Dr.
StockerNutrition (also called nourishment or aliment) is the provision,
to cells and organisms of the materials necessary (in the form of food) to support life.
Food is any substance, usually composed primarily of carbohydrates, fats, water and/or proteins, that can be eaten or drunk by an animal or human for nutrition or pleasure.
Foods have different nutritional values…….
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The Digestive Process with Dr. Stocker
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The Digestive Process with Dr.
Stocker
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The Digestive Process with Dr.
Stocker SQUISHAnd Turned
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The Digestive Process with Dr.
Stocker
Absorption
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The Digestive Systems is Important because …..
The Digestive System breaks down food molecules into chemicals our body needs to carry out metabolic process.
The Digestive System wastes indigestible food molecules the body can not use.
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The Digestive Systems is Important because everyone poops!
“An elephant makes a big poopA mouse makes a tiny poop
Some stop to poopOthers do it on the move”
~Taro Gomi