Transcript Digestive System and Excretory system Notes The Digestive System

 The
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Digestive System
What does the Digestive System do?

Your Digestive system digests food to use as energy for your
body
 There
are seven main organs that make up the
digestive system are
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The Oral Cavity
The Esophagus
The Stomach
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The Small Intestine
The Large Intestine
—also called the colon—
The Rectum
The Anus
Inside mouth, stomach, and small
intestine there is a lining called the
mucosa this lining produces juices
which help break down food
 Food
in not the form of energy the body can
use
 These foods must be changed into a form of
energy that can be used by the body
 This converted energy is then absorbed by
the blood and carried through out the body
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The Oral Cavity
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The Esophagus
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A Muscular tube in the throat to the stomach
The Stomach
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Also known as the mouth
The Oral Cavity is were the food is chewed
Saliva is secreted from the mouth to help break down
the food
Stores and digests food
The Small Intestine
 Absorbs food as nutrients
 Large
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Intestine
Stores food and wastes and prepares the food to
be egested
 Rectum
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Stores solid feces
 Anus
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Feces pass through this part and gets egested out
of the body
 Eating
improper foods
 Eating too much (Bulimic)
 Eating too little (Anorexic)
 Eating too fast or too much
 Ripping your stomach slightly
 Eating
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healthy foods, such as fiber
Do not eat too much meat products
 Lots
of water
 Chew food thoroughly
 Eat foods that have enzymes that can help
your body

Apple Vinegar
The function of the
Excretory
System is ridding
the body of waste.
The main organs of the
excretory system are the
bladder, kidneys, lungs, liver
and skin.
 The excretory system is like
the sewage system because
the excretory system gets rid
of waste that the body does
not need. The body also gets
rid of natural gasses which
can be fatal if not released
from the body.

 One
of the main jobs of the kidneys is to filter
the waste out of the blood.
 The kidneys filter that blood as many as 400
times a day! More than 1 million tiny filters
inside the kidneys (nephrons) remove the
waste.
 the
kidneys: filters that take the waste out
of the blood and make urine
 the ureters: tubes that carry the urine to the
bladder
 the bladder: a bag that collects the urine
 the urethra: a tube that carries the urine out
of the body
 The
liver acts as a filter for the blood. It cleans out
toxic waste, poisons, and acid in the blood.
 The
skin plays a major
role in excretion. It helps
the body get rid of excess
water, salts, and waste
such as urea. The urea is
a nitrogen waste that is
filtered out of the blood
 our
lungs also undergo
excretion by removing carbon
dioxide from the body