The Digestive System
Mr. Gerlach’s
7th Grade
Health Education
The Digestive System
Defn: Changes food you
eat into nutrients that
your cells can use.
Alimentary Canal: The
complete digestive
system (mouth to
rectum).
Digestion: Food is
chemically changed so
that it can be absorbed
into the bloodstream.
Parts of the Digestive System
Teeth: Grinds your
food.
Salivary Glands:
Produce the saliva in
your mouth.
Tongue: Helps to
push food into your
esophagus.
Parts of the Digestive System
Esophagus: The
tube that carries food
from the mouth to the
stomach.
Epiglottis: The flap
of skin that covers the
trachea
Uvula: Covers the
nasal passage
Peristalsis Waves
Parts of the Digestive System
Stomach: Stores all
the food. (warehouse
for food)
Sphincter muscles:
The muscles found at
each end of the
stomach.
Chyme: Liquid lumpy
material that is made
by the stomach.
How food moves through the
Digestive System !!
Peristalsis Waves: A
ring of muscle that
moves food through
the digestive system.
Absorption: The
process where
digested food gets
into the blood stream
Absorption in the Small Intestine
Villi: Tiny projections
on the inner walls of
the small intestine
where absorption
takes place.
Parts of the Digestive System
Duodenum: The tube
that runs from the
stomach to the small
intestine.
Small Intestine:
Where digestion first
takes place.
Parts of the Digestive System
Colon
Large Intestine:
Three Parts:
1. Ascending Colon
2. Traverse Colon
3. Descending Colon
Appendix: Attached
to the beginning of
the Ascending Colon
Other Parts of the Digestive
System
Liver: Makes bile and
sends it to the gall
bladder.
Bile: A substance
produced by the liver
and stored in the gall
bladder.
Gall Bladder:
Receives bile from
the liver and stores
the bile
Other Parts of the Digestive
System
Pancreas: Breaks
down sugars and
starches.
The Human Digestive System
This link provided us with a great review
activity for learning the Digestive System
parts.
Back
The Process of Removing Waste
Kidneys: Filter the water
and dissolved wastes in
the body.
Ureters: Narrow tubes
that carry urine from your
kidneys to the bladder.
Bladder: Urine is stored
in the bladder
Urethra: A narrow tube
that carries urine from the
body
Problems of the Digestive System
Indigestion: Stomach
too acidic, may be
caused by eating too fast
or too much or by spicy or
acidic foods.
Diarrhea: Watery feces;
caused by bacteria, virus,
food poisoning, nutritional
deficiencies.
Ulcers: Sores on the
inner walls of the
stomach or small
Intestines.
Problems of the Digestive System
Cirrhosis:
Destruction on liver
tissue; caused by
drinking too much
alcohol.
Gallstones: Crystals
in gallbladder; may
block passage of bile
to small intestines.
Problems of the Digestive System
Kidney Stones:
Crystals in the kidney;
may block passage of
urine to the bladder.
Problems of the Digestive System
Appendicitis:
Inflammation of the
appendix
Problems of the Digestive System
Colon Cancer:
Uncontrolled growth
of abnormal cells in
large intestine.
Care of the Digestive System
The best way to take care of the digestive
is to practice healthful eating habits
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Eat a variety of food from different food
groups, low in fat high in fiber.
Do not hurry through your meals. Enjoy your
food
Eat enough food to satisfy your hunger.
Drink plenty of water.
Have regular dental checkups