Transcript Main Function of the Digestive System

http://healthfavo.com/humandigestive-system-for-kids.html
• The main function of the digestive system is to take food in, turn
the food into usable energy or storable energy, and ultimately
dispose of the unusable products that you consume
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• The mouth and esophagus begin the digestive system
~ Mouth starts breaking down of food with the process of
chewing. Also saliva begins breaking starches into sugar
~ The esophagus pushes food from the mouth to stomach
through peristalsis
• The stomach holds food and mixes it with enzymes and acid
while pushing the food to the small intestine
• The small intestine is a muscular tube that breaks down
food using enzymes to extract nutrients from the food to absorb
into the blood stream then to the liver
• The gallbladder simply stores bile and helps break down fat
• Next we have the colon or large intestine. Its main job is to
take the digested waste from the body, remove the water, and
compress the waste so it can be disposed of easily.
• Lastly the rectum and the anus. The rectum is there to store
stool and tell the brain that it needs to be evacuated. Finally
the anus which is the final sphincter that releases the stool.
Digestive Track
• Mouth-the opening in the lower part of the human face,
surrounded by the lips, through which food is taken in.
• Esophagus- the part of the alimentary canal that
connects the throat to the stomach; the gullet. In humans
it is a muscular tube lined with mucous membrane.
• Liver-a large lobed glandular organ in the abdomen of
vertebrates, involved in many metabolic processes.
• Gallbladder-the small sac-shaped organ beneath the
liver, in which bile is stored after secretion by the liver
and before release into the intestine.
• Small intestine-the part of the intestine that runs
between the stomach and the large intestine; the
duodenum, jejunum, and ileum collectively
• Large intestine- the cecum, colon, and rectum
collectively.
• Stomach-a saclike enlargement of the alimentary canal,
as in humans and certain animals, forming an organ for
storing, diluting, and digesting food.
• Salivary Glands- any of several glands of the mouth
and jaw that secrete saliva.
• Pancreas-a large gland behind the stomach that secretes
digestive enzymes into the duodenum
• Pharynx-the membrane-lined cavity behind the nose and
mouth, connecting them to the esophagus.
• Anus-the opening at the end of the alimentary canal through
which solid waste matter exits the body.
• Anal Canal-The anal canal is the terminal part of the large
intestine. It is situated between the rectum and anus, below the
level of the pelvic diaphragm.
• Appendix-a tube-shaped sac attached to and opening into the
lower end of the large intestine in humans and some other
mammals.
• Rectum-the final section of the large intestine, terminating at
the anus.
• Cecum-a pouch connected to the junction of the small and
large intestines.
• Ascending colon-the first main part of the large intestine, which
passes upward from the cecum on the right side of the
abdomen.
• Descending colon-the part of the large intestine that passes
downward on the left side of the abdomen toward the rectum.
• The mouth consumes the substance
and makes it into something called
a bolus. It then travels down the
esophagus and drops into the
stomach past the liver. It then
travels through the intestines by the
gallbladder and next to the
pancreas. Finally goes through the
rectum and exits through the anus.
Food enters the Mouth
Travels down the Esophagus
Deposits in the Stomach
Bile formed in
the Liver
Bile deposits in the
Gallbladder
Pancreatic juices formed
in the Pancreas
Goes through
Small Intestine
Then through the
Large Intestine
Deposits in the Rectum
Exits through the Anus
• http://www.youtube.com/watch?v=b20VRR9C37Q
Circulatory System:
• The digestive system works very closely with the circulatory system to get
the absorbed nutrients distributed through the body.
• The circulatory system also carries chemical signals from the endocrine
system that controls the speed of digestion.
Excretory System: (the kidney & urination)
• The digestive system works parallel with your excretory system.
• These two systems are closely connected in controlling the amount of
water in the body.
• Also, while the digestive system collects and removes undigestive solids,
the excretory filters compounds from the blood stream and collects
them in urine.
What's the first step in
digesting food?
Answer:
It begins when you smell something irresistible or when you see a
favorite food you know will taste good.
Just by smelling, tasting, or even thinking how delicious your food is
going to taste, you begin to salivate — and the digestive process
kicks in, preparing for that first scrumptious bite.
What’s happening is, our salivary glands, which are located under
the tongue and near the lower jaw, begin producing saliva. A
digestive enzyme called amylase, found in saliva, starts to break
down some of the carbohydrates in the food even before it leaves
the mouth.
What is Chyme?
Answer:
By the time food is ready to leave the stomach, it has been processed
into a thick liquid called chyme.
A walnut-sized muscular tube at the outlet of the stomach called the
pylorus keeps chyme in the stomach until it reaches the right
consistency to pass into the small intestine. Chyme is then squirted down
into the small intestine, where digestion of food continues so the body
can absorb the nutrients into the bloodstream.
• http://kidshealth.org/teen/interactive/digestive_it.html
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http://www.sciencekids.co.nz/sciencefacts/humanbody/digestivesystem.html\
Cleveland Clinic - The Structure and Function of the Digestive System. (n.d.). <i>Cleveland Clinic</i>. Retrieved May 29, 2014, from
http://my.clevelandclinic.org/anatomy/digestive_system/hic_the_structure_and_function_of_the_digestive_system.aspx
Function of the Digestive System. (n.d.). <i>eMedTV: Health Information Brought To Life</i>. Retrieved June 2, 2014, from http://digestivesystem.emedtv.com/digestive-system/function-of-the-digestive-system.html
The Digestive System Blog. (n.d.). <i>The Digestive System Blog RSS</i>. Retrieved June 3, 2014, from http://chronosphere.edublogs.org/
MD, Y. D. (2012). Digestive Systm. <i></i>. Retrieved June 2, 2014, from http://kidshealth.org/teen/your_body/body_basics/digestive_system.html#
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Digestive Systm. (n.d.). <i></i>. Retrieved June 2, 2014, from http://www.biology4kids.com/files/systems_digestive.html
•
Pearson, C. (2009, September). Fun facts about the digestive system!. <i></i>. Retrieved June 2, 2014, from http://chronosphere.edublogs.org/
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Digestive System Diseases. (n.d.). <i></i>. Retrieved June 2, 2014, from http://www.dmu.edu/medterms/digestive-system/digestive-system-diseases/
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The Digestive System Blog. (2009, September 1). The Digestive System Blog RSS. Retrieved June 2, 2014, from
http://chronosphere.edublogs.org/2009/09/01/fun-facts-about-the-digestive-system/
National Digestive Diseases Information Clearinghouse (NDDIC). (2013, September 18). - National Digestive Diseases Information
ClearinghouseYour Digestive System and How It Works. Retrieved June 2, 2014, from http://digestive.niddk.nih.gov/ddiseases/pubs/yrdd/
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Castro, B. (2013, October 4). 11 Surprising Facts About the Digestive System. <i>LiveScience</i>. Retrieved June 6, 2014, from
http://www.livescience.com/40187-digestive-system-surprising-facts.html
. (n.d.). <i>Dictionary.com</i>. Retrieved June 6, 2014, from http://dictionary.reference.com
. (n.d.). <i></i>. Retrieved June 6, 2014, from http://www.biology4kids.com/files/systems digestive.html
Digestive System. (n.d.). <i>InnerBody</i>. Retrieved June 6, 2014, from http://www.innerbody.com/image/digeov.html