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The Digestive System
By Dean Berry, Ed. D.
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Which body system
converts food into energy
for our tissues and organs?
The Digestive System
The process of digesting food begins with chewing food as
saliva is added. Once food is sufficiently chewed, it is
transported down a long tube, the esophagus, until it
reaches the stomach.
Digesting food is a complex process that
involves a trip through many organs.
What are some of the
organs that help digest
the food we eat?
Use your paper to list and describe the digestive
steps and names of the organs involved.
Chewed food and liquid moves through the throat, also
called the pharynx, and continues down the esophagus.
However, the wind pipe (trachea) also starts in the
throat and can present a problem of misdirection for the
food as it travels through the throat. What might
happen? Fortunately, a flap of tissue called the epiglottis
closes and prevents food or liquid from going down the
wrong pipe.
As the esophagus connects to the stomach, there is
another flap of tissue that allows food to pass into the
stomach but keeps stomach acids from backing up into the
lower esophagus. Some foods may cause the muscles
controlling this tissue to weaken and enable the stomach
acid to seriously damage the lining of the esophagus.
Have you ever experienced stomach pain
after eating certain foods? How did you
solve the problem?
.
Stomach acids and special enzymes flow
from the sides of the stomach lining into
the stomach to help breakdown foods into
softer material called chyme.
What do you think is happening when your stomach growls? After
your food is turned into a soft material called chyme, it squeezes
through a passageway and enters the small intestine. Food
normally leaves the stomach in 20 to 45 minutes.
The small intestine is the next organ involved in digestion.
The small intestine is the size of your largest finger and
about 22 feet long. It enables nutrients in the soft chyme to
pass through the lining of the intestine and into the blood
stream which carries nutrients to our cells. It usually takes
about 8 hours for food to pass through the small intestine.
Why would it be a problem if an accident
created a tiny perforation of the intestine?
The small intestine has billions of bacteria
that are essential for proper functioning.
Using too many antibiotics can kill off
these important bacteria and lead to
serious digestive problems.
In fact, it is very healthy to eat foods that contain
probiotics that increase the number of bacterial
organisms in our intestinal tract.
Many illnesses can create serious problems in the
intestines. Irritable bowel syndrome and lactose
intolerance can make life very uncomfortable and painful.
After the small intestine has completed its work, the left over
material passes into the large intestine (colon) which is bigger
in diameter but less than two feet long. The job of the large
intestine is to remove liquid from the processed food and
send the undigested waste material to the anus for excretion
from the body.
Eating a healthy diet with plenty of fiber can help
reduce the risk of dangerous diseases that threaten
the colon. Cancer of the colon is one of the most
deadly cancers facing Americans.
Another important organ of the digestive system
is the liver. It is located in the upper right
quadrant of the abdomen, below the diaphragm.
Next to the skin, the liver is the largest organ in
the body. It contains a vast network of blood
vessels and carries out the vital function of
detoxifying the blood stream. In addition, older
blood cells are removed from the blood stream.
What part in the body
manufactures new blood cells?
The liver is where glucose is stored as glycogen and fats are converted
to high-density and low-density lipo proteins. It is also the place where
bile is formed and released into the intestine for excretion. It is the
most robust organ in the body. Damage to any portion of the liver is
regenerated and repaired for effective functioning. In fact, a liver
donor can give half of their liver to another person who needs a liver
transplant. The liver interacts closely with the small intestines.
The liver has many functions. It metabolizes or breaks down
nutrients from food to produce energy as needed by the body.
It also produces substances that regulate blood clotting. Why
is blooding clotting important?
The liver also serves as a factory for proteins and
cholesterol. In addition, this important organ provides
immunity against infection.
Drugs, alcohol, and infections can
cause severe damage to the liver.
Too much alcohol consumption or drug use can result in
major liver damage. Cirrhosis of the liver usually results
in death if not stopped.
Group Discussion
Meet in groups and discuss the following.
1. Describe four organs of the digestive process
and how they function.
2. Begin in the mouth and trace the journey that
food experiences in route to the colon.
3. What can we do to help maintain a healthy
digestive system?
Prepare to Write
Write an explanatory essay to describe the
organs of the digestive system and how they
function together to provide for the digestion
of the food we eat. Explain how we can
maintain a healthy digestive system.
How Does Your Digestive System Work
5 min Ted Ed
• https://www.youtube.com/watch?v=Og5xAdC
8EUI&t=92s
The Digestive System Excellent
National Geographic 5 min
https://www.youtube.com/watch?v=_QYwsc
ALNng
3D Anatomy Digestion
5 min excellent
• https://www.youtube.com/watch?v=9PzANr8
VyUg
How Your Digestive System Works
5 min Animated Excellent
• https://www.youtube.com/watch?v=Og5xAdC
8EUI

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Dean r berry human body digestive system

  • 1. Illustrated and Animated The Digestive System By Dean Berry, Ed. D. Free PowerPoint at slideshare.com (type in title) Or dean r berry
  • 2. •Free PowerPoint at Slideshare.com • Type PPT title or dean r berry
  • 3. Which body system converts food into energy for our tissues and organs?
  • 4. The Digestive System The process of digesting food begins with chewing food as saliva is added. Once food is sufficiently chewed, it is transported down a long tube, the esophagus, until it reaches the stomach.
  • 5. Digesting food is a complex process that involves a trip through many organs.
  • 6. What are some of the organs that help digest the food we eat?
  • 7. Use your paper to list and describe the digestive steps and names of the organs involved.
  • 8. Chewed food and liquid moves through the throat, also called the pharynx, and continues down the esophagus. However, the wind pipe (trachea) also starts in the throat and can present a problem of misdirection for the food as it travels through the throat. What might happen? Fortunately, a flap of tissue called the epiglottis closes and prevents food or liquid from going down the wrong pipe.
  • 9. As the esophagus connects to the stomach, there is another flap of tissue that allows food to pass into the stomach but keeps stomach acids from backing up into the lower esophagus. Some foods may cause the muscles controlling this tissue to weaken and enable the stomach acid to seriously damage the lining of the esophagus. Have you ever experienced stomach pain after eating certain foods? How did you solve the problem? .
  • 10. Stomach acids and special enzymes flow from the sides of the stomach lining into the stomach to help breakdown foods into softer material called chyme.
  • 11. What do you think is happening when your stomach growls? After your food is turned into a soft material called chyme, it squeezes through a passageway and enters the small intestine. Food normally leaves the stomach in 20 to 45 minutes.
  • 12. The small intestine is the next organ involved in digestion. The small intestine is the size of your largest finger and about 22 feet long. It enables nutrients in the soft chyme to pass through the lining of the intestine and into the blood stream which carries nutrients to our cells. It usually takes about 8 hours for food to pass through the small intestine. Why would it be a problem if an accident created a tiny perforation of the intestine?
  • 13. The small intestine has billions of bacteria that are essential for proper functioning. Using too many antibiotics can kill off these important bacteria and lead to serious digestive problems.
  • 14. In fact, it is very healthy to eat foods that contain probiotics that increase the number of bacterial organisms in our intestinal tract.
  • 15. Many illnesses can create serious problems in the intestines. Irritable bowel syndrome and lactose intolerance can make life very uncomfortable and painful.
  • 16. After the small intestine has completed its work, the left over material passes into the large intestine (colon) which is bigger in diameter but less than two feet long. The job of the large intestine is to remove liquid from the processed food and send the undigested waste material to the anus for excretion from the body.
  • 17. Eating a healthy diet with plenty of fiber can help reduce the risk of dangerous diseases that threaten the colon. Cancer of the colon is one of the most deadly cancers facing Americans.
  • 18. Another important organ of the digestive system is the liver. It is located in the upper right quadrant of the abdomen, below the diaphragm.
  • 19. Next to the skin, the liver is the largest organ in the body. It contains a vast network of blood vessels and carries out the vital function of detoxifying the blood stream. In addition, older blood cells are removed from the blood stream. What part in the body manufactures new blood cells?
  • 20. The liver is where glucose is stored as glycogen and fats are converted to high-density and low-density lipo proteins. It is also the place where bile is formed and released into the intestine for excretion. It is the most robust organ in the body. Damage to any portion of the liver is regenerated and repaired for effective functioning. In fact, a liver donor can give half of their liver to another person who needs a liver transplant. The liver interacts closely with the small intestines.
  • 21. The liver has many functions. It metabolizes or breaks down nutrients from food to produce energy as needed by the body. It also produces substances that regulate blood clotting. Why is blooding clotting important?
  • 22. The liver also serves as a factory for proteins and cholesterol. In addition, this important organ provides immunity against infection.
  • 23. Drugs, alcohol, and infections can cause severe damage to the liver.
  • 24. Too much alcohol consumption or drug use can result in major liver damage. Cirrhosis of the liver usually results in death if not stopped.
  • 25. Group Discussion Meet in groups and discuss the following. 1. Describe four organs of the digestive process and how they function. 2. Begin in the mouth and trace the journey that food experiences in route to the colon. 3. What can we do to help maintain a healthy digestive system?
  • 26. Prepare to Write Write an explanatory essay to describe the organs of the digestive system and how they function together to provide for the digestion of the food we eat. Explain how we can maintain a healthy digestive system.
  • 27. How Does Your Digestive System Work 5 min Ted Ed • https://www.youtube.com/watch?v=Og5xAdC 8EUI&t=92s
  • 28. The Digestive System Excellent National Geographic 5 min https://www.youtube.com/watch?v=_QYwsc ALNng
  • 29. 3D Anatomy Digestion 5 min excellent • https://www.youtube.com/watch?v=9PzANr8 VyUg
  • 30. How Your Digestive System Works 5 min Animated Excellent • https://www.youtube.com/watch?v=Og5xAdC 8EUI