The Digestive System
I – The Body’s Engine
Digestive System – changes food into nutrients the body needs as food
II – How The Digestive System Works – food is chemically changed into particles that
can be absorbed into the bloodstream – High cholesterol-> harder to absorb
A – Mouth/Teeth – grinds up food
Salivary Glands – produce saliva (99% H20) that produces an enzyme
Areas
(proteins that break up certain foods) that breaks down carbohydrates
in
Epiglottis – flap that closes the opening to trachea
which
B – Tongue – pushes food into esophagus to start digestion
food
C – Esophagus – muscular wall that pushes food into stomach
actually
D – Stomach – with help from enzymes (that are produced in stomach walls) and
passes
through
gastric juices, stomach (muscle) churns food-> starts to break down proteins
E – Small Intestines – 20’ long tube where most digestion occurs
Duodenum – first part of small intestines where majority of digestion occurs
Villi – line the wall of the small intestines which contain capillaries to feed
area with nutrients
F – Liver – produces bile, which helps digest fats
G – Gallbladder – stores bile and releases it into small intestines when needed
H – Pancreas – produces glucose (sugar) for body to use produces 3 enzymes for
use in small intestines digestion
*Liver, Gallbladder & Pancreas are responsible for:
► breaks down glucose (sugar)
► maintains level of glucose (sugar)
► removes old red blood cells
► reduces toxic level of materials
► stores fat-soluble vitamins
III - Care – eat a balanced diet/ eat breakfast/ eat 5-6 small meals a day/ take your time
when eating/ don’t over stuff yourself/ take in plenty of H2O/ take care of teeth
IV - Problems – See table 10.26 on page 323
The Digestive System
I – The Body’s Engine
Digestive System –
II – How The Digestive System Works –
A – Mouth/Teeth – grinds up food
Salivary Glands –
Areas
in
Epiglottis – flap that closes the opening to trachea
which
B – Tongue –
food
C – Esophagus –
actually
D – Stomach
passes
through
E – Small Intestines –
Duodenum –
Villi –
F – Liver –
G – Gallbladder –
H – Pancreas –
*Liver, Gallbladder & Pancreas are responsible for:
►
►
►
►
►
III - Care –
IV - Problems – See table 10.26 on page 323