Download Nutrition - Uniservity CLC

P1
In pairs discuss what you think nutrition is, and write down a definition!
All activity stimulates your body’s need for fuel and fluid. Knowledge of
the nutrients your body requires, along with their different functions,
provides the basis of the science of nutrition.
Key terms for the dictionary:
Nutrition – The means b which your body takes in energy and nutrients
in food to sustain growth and development, and to keep us alive and
healthy
Food – Any substance derived from plants or animals containing a
combination of carbohydrates, fats, proteins, vitamins, minerals, fibre,
water and alcohol
Diet – A person’s usual eating habits and food consumption
P1
Working in pairs, you need to match each key word with the correct
definition and example.
Remember:
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•
•
Match the obvious ones first
Read all columns before deciding
Complete the table in pencil – easier to make corrections
P2
We know food provides the energy and nutrients needed to stay alive
and in good health. Before the body can make use of this energy and
nutrients, the food has to be broken down to release them through the
process of digestion
Video clip – The Digestive System
Watch the clip produced by ‘How the body works’ and take notes in a
timeline format that explains how food is digested
N.B You may also want to write down key facts and figures about
the digestive system
P2
Using the notes you made from the video and the cards provided, act out
the passage food takes through the digestive system from when it enters
the mouth.
P2
Digestion: This can be considered as a multi stage process following the
ingestion of raw materials (i.e. Food).
It involves mechanical and chemical elements in the process that ultimately
leads to enzymes in the gut breaking down the larger chemical compounds in
your food into smaller compounds that can be absorbed by the body.
Absorption: This is the movement of digested food from the stomach and small
intestine into the bodies’ tissues and blood.
The process of absorption happens in the villi that line the small intestine.
These finger-like projections provide a large surface area for absorption to take
place.
P2
Excretion: This is the removal of potentially poisonous end-products from
metabolism, normally in urine and faeces.
In humans the main organs of excretion are:
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The Kidneys - through which urine is eliminated
Large Intestine - through which solid or semi solid waste is expelled.
The Kidneys: The kidneys play a key role in keeping the composition of the
blood constant, by filtering it to remove excess water and waste products,
which are then secreted as urine.
Every 24 hours the kidneys filter in the region of 150 litres of blood and produce
around 1.5 litres of urine.
We know that there are 7 main components that make up a balanced diet. They
are:
Carbohydrates
Fats
Macronutrients
Proteins
Vitamins and Minerals
Water
Fibre
Micronutrients
Fluids
Using the knowledge you have gained from key stage 4, complete the crossword
identifying key words that relate to DIET
REMEMBER
Complete the crossword in pencil, you can correct the wrong answers then!
Carbohydrates:
• Form’s you body’s most readily available source of energy and can be
accessed rapidly
•
One gram of carbohydrate provides approx 4kcal of energy
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Carbohydrate foods are divided into 2 basic types – simple or complex
Simple
Essentially sugars
Formed from single and double sugar units
and are easily digested and absorbed to
provide a quick energy source
The simplest carbohydrate unit is
monosaccharide, most common = glucose
Saccharide means sugar, mono means one
Glucose is used to produce Adenosine
Triphosphate (ATP), the compound required
for muscle contraction
Complex