Podcast
Questions and Answers
What is the primary function of the digestive system?
What is the primary function of the digestive system?
What is the role of saliva in the digestive process?
What is the role of saliva in the digestive process?
What is the function of the esophagus?
What is the function of the esophagus?
What is the purpose of stomach acid?
What is the purpose of stomach acid?
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What is the role of the small intestine?
What is the role of the small intestine?
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What is the function of the large intestine?
What is the function of the large intestine?
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What is the role of trillions of bacteria in the large intestine?
What is the role of trillions of bacteria in the large intestine?
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What is the function of the appendix?
What is the function of the appendix?
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The digestive system is designed to transform food into useful ______ that keep you energized and help your cells grow and repair.
The digestive system is designed to transform food into useful ______ that keep you energized and help your cells grow and repair.
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The mouth is the ______ to the digestive system, where food is broken down into pieces to make the process easier.
The mouth is the ______ to the digestive system, where food is broken down into pieces to make the process easier.
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The amount of ______ produced in a year could fill 2 medium-sized bathtubs.
The amount of ______ produced in a year could fill 2 medium-sized bathtubs.
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The throat is a ______ in the road, where food can either go down the esophagus or into the lungs.
The throat is a ______ in the road, where food can either go down the esophagus or into the lungs.
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The esophagus is a muscular tube that uses ______ to move food through the digestive system.
The esophagus is a muscular tube that uses ______ to move food through the digestive system.
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The stomach has a ______ that opens to let food in and keeps it from coming back out into the esophagus.
The stomach has a ______ that opens to let food in and keeps it from coming back out into the esophagus.
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The small intestine is a long, coiled tube that is over ______ feet in length when spread out.
The small intestine is a long, coiled tube that is over ______ feet in length when spread out.
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The large intestine is ______ feet long and is responsible for absorbing water and electrolytes.
The large intestine is ______ feet long and is responsible for absorbing water and electrolytes.
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Study Notes
The Digestive System
- The digestive system is designed to transform food into useful nutrients that keep you energized and help your cells grow and repair.
- The mouth is the gateway to the digestive system, where food is broken down into pieces to make the process easier.
- Saliva mixes with food and breaks it down even more, making it easier for the stomach to digest.
The Mouth
- The amount of saliva produced in a year could fill 2 medium-sized bathtubs.
- Teeth chew food, and the tongue rolls it around to mix it with saliva.
The Throat (Pharynx)
- The throat is a fork in the road, where food can either go down the esophagus or into the lungs.
- Coughing can help dislodge food that goes into the lungs.
The Esophagus
- The esophagus is a muscular tube that uses peristalsis to move food through the digestive system.
- Peristalsis is a process where muscles in the esophagus squeeze behind the food and relax in front of it.
The Stomach
- The stomach is a muscular sac that holds, mixes, and grinds food into mush.
- Stomach acid is strong and can break down food, but it can also harm the stomach lining.
- The stomach has a valve that opens to let food in and keeps it from coming back out into the esophagus.
The Small Intestine
- The small intestine is a long, coiled tube that is over 20 feet in length when spread out.
- It has three sections and is responsible for absorbing nutrients from food.
- Bile from the liver and enzymes from the pancreas help break down fat and absorb nutrients.
The Large Intestine (Colon)
- The large intestine is a muscular tube that is 5-6 feet long and is responsible for absorbing water and electrolytes.
- It is home to trillions of bacteria that help break down food, absorb nutrients, and support immunity.
- The appendix is a small, dangly thing that houses bacteria and has some tissues useful for the immune system.
The Rectum
- The rectum is a straight chamber that is about 8 inches long and has special sensors that detect when there is stool or gas to be released.
- The sensors send signals to the brain, which then sends the urge to go to the bathroom.
- The sphincters relax to release stool, and contract to keep it in until the right moment.
Elimination
- The process of eliminating stool takes about 36 hours from the small intestine to the rectum.
- The rectum and sphincters work together to keep stool in until the right moment, and then release it when necessary.
The Digestive System
- Designed to transform food into useful nutrients for energy and cell growth/repair
- Begins in the mouth, where food is broken down into smaller pieces
The Mouth
- Saliva mixes with food to break it down further, making digestion easier for the stomach
- Teeth chew food, and the tongue rolls it around to mix it with saliva
- A person produces enough saliva in a year to fill 2 medium-sized bathtubs
The Throat (Pharynx)
- Acts as a fork in the road, where food can either go down the esophagus or into the lungs
- Coughing can help dislodge food that accidentally goes into the lungs
The Esophagus
- A muscular tube that uses peristalsis to move food through the digestive system
- Peristalsis is a process where muscles squeeze behind food and relax in front of it, pushing food forward
The Stomach
- A muscular sac that holds, mixes, and grinds food into mush
- Stomach acid is strong enough to break down food, but can also harm the stomach lining
- Has a valve that opens to let food in and keeps it from coming back out into the esophagus
The Small Intestine
- A long, coiled tube over 20 feet in length when spread out
- Has three sections responsible for absorbing nutrients from food
- Bile from the liver and enzymes from the pancreas help break down fat and absorb nutrients
The Large Intestine (Colon)
- A muscular tube approximately 5-6 feet long responsible for absorbing water and electrolytes
- Home to trillions of bacteria that help break down food, absorb nutrients, and support immunity
- The appendix is a small, dangly thing that houses bacteria and has some tissues useful for the immune system
The Rectum
- A straight chamber about 8 inches long with special sensors detecting stool or gas
- Sensors send signals to the brain, which then sends the urge to go to the bathroom
- Sphincters relax to release stool, and contract to keep it in until the right moment
Elimination
- The process of eliminating stool takes about 36 hours from the small intestine to the rectum
- The rectum and sphincters work together to keep stool in until the right moment, and then release it when necessary
The Digestive System
- Designed to transform food into useful nutrients for energy and cell growth/repair
- Begins in the mouth, where food is broken down into smaller pieces
The Mouth
- Saliva mixes with food to break it down further, making digestion easier for the stomach
- Teeth chew food, and the tongue rolls it around to mix it with saliva
- A person produces enough saliva in a year to fill 2 medium-sized bathtubs
The Throat (Pharynx)
- Acts as a fork in the road, where food can either go down the esophagus or into the lungs
- Coughing can help dislodge food that accidentally goes into the lungs
The Esophagus
- A muscular tube that uses peristalsis to move food through the digestive system
- Peristalsis is a process where muscles squeeze behind food and relax in front of it, pushing food forward
The Stomach
- A muscular sac that holds, mixes, and grinds food into mush
- Stomach acid is strong enough to break down food, but can also harm the stomach lining
- Has a valve that opens to let food in and keeps it from coming back out into the esophagus
The Small Intestine
- A long, coiled tube over 20 feet in length when spread out
- Has three sections responsible for absorbing nutrients from food
- Bile from the liver and enzymes from the pancreas help break down fat and absorb nutrients
The Large Intestine (Colon)
- A muscular tube approximately 5-6 feet long responsible for absorbing water and electrolytes
- Home to trillions of bacteria that help break down food, absorb nutrients, and support immunity
- The appendix is a small, dangly thing that houses bacteria and has some tissues useful for the immune system
The Rectum
- A straight chamber about 8 inches long with special sensors detecting stool or gas
- Sensors send signals to the brain, which then sends the urge to go to the bathroom
- Sphincters relax to release stool, and contract to keep it in until the right moment
Elimination
- The process of eliminating stool takes about 36 hours from the small intestine to the rectum
- The rectum and sphincters work together to keep stool in until the right moment, and then release it when necessary
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Description
Learn about the digestive system, its role in transforming food into nutrients, and the functions of the mouth and teeth in the process.
