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Getting Energy And Nutrients From Food ( Chapter 10 ) - Coggle Diagram
Getting Energy And Nutrients From Food ( Chapter 10 )
Importance Of Food
Energy to do work
Building blocks for growth and repair
Digestive System
Digestion
Break down into smaller substances so that they can be absorbed by the body
Energy supply
Breathing
Respiratory System
Windpipe
Lungs
Nostrils
Take in oxygen
to
.
Dietary fibre and water
We need water to ;
Dissolve and carry nutrients
Remove waste products
Maintain body temperature
Dietary fibre makes our
soild waste soft
, bulky and
easy to move
through the
digestive tract
.
Fibre can also help us
prevent constipation
. We can obtain fibre from
vegetables , fruits and cereal
.
How does enzymes help in digestion ?
Large , insoluble
, food particles are
broken down
and
chemical subtances
called
enzymes
into
smaller , soluble
particles which can enter the bloodstream and are carried to all parts of the body .
Digestion of food
Gullet
No enzymes are produced in the gullet
Stomach
The stomach is a muscular bag . It
digests
food by
mashing
food into a
liquid
mixture , producing
enzymes
to
digest
proteins
.
Tongue
The tongue
rolls
food into a
ball
and
pushes
it into the gullet
Small intestine
Digestion
of all food is
completed
in the small intestine by different enzymes .
Mouth
The size of the food we eat is too large for our body cells to absorb . When we
chew
, our teeth
cut large pieces
, of food into
smaller pieces
Large intestine
No
digestion
happens in the large intestine .
Excess water and mineral salts are absorbed through the walls of the large intestine into the bloodstream .
Undigested food (faeces)
moves into the
rectum
and is stored and leave the body through the
anus
.
Respiration
In the body cells , the
digested
food will react with
oxygen
to release
energy