FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
FOOD STORAGE IN LIVING THINGS
Module 3 Unit 8 Lesson 2 1
FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Introduction
Look at your upper arms; look at your belly! Do you store food? If yes… what do you store? Where? Does your body develop special organs in which to store food the same way that plants do?
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Objectives
You should be able to:1. identify the form in which food is
stored in the human body.2. describe areas in the human body
where storage is most likely to occur.3. list other substances apart from food
that might be stored in the body.
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Excess in your diet!
The excess food that you eat - especially fat - is stored. Excess carbohydrate and even protein can also be converted to fat and stored.
So .. all the excess fat that you have anywhere in or on your body comes from your diet!
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Storage in Mammals
In mammals, food is stored in several ways: • polysaccharides (starchy foods) are
stored as glycogen. • excess sugar, such as glucose, is also
converted to glycogen and stored.
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Storage in Mammals – LIVER
Stored glycogen is called ‘animal starch’. It is stored mainly in the liver.
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Glycogen is also stored in MUSCLES.
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Storage in Mammals
• When needed for energy–related activities, glycogen can be re-converted to glucose by the action of hormones.
• NB. You will learn more about this when you do ‘homeostasis’!
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Fat Storage – UNDER THE SKIN
Most persons store fat under the skin. Lipids are stored as fat usually under the skin in the abdomen or ‘belly’ region, as well as the back, under the neck and chin, the arms and thighs.
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Fat Storage
• Fat is also stored around many organs and serves to cushion and protect them.
• Stored fat serves as an insulator and also an energy source.
Look at the fat stores (in yellow) on the diagrams on slide 11.
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Locations of stored fat ( shown by yellow)
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Morbid Obesity from Fat Storage
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Other animals also store fat and become obese!
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
A bear stores fat before it hibernates during winter
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Did You Know?Obesity is responsible for:• High Blood pressure, hypertension - is twice as
common in adults who are obese than in those who are at a healthy weight.
• High blood cholesterol - 50% more likely to have elevated blood cholesterol levels.
• Diabetes Type 2 - Researchers estimate that 88 to 97% of type 2 diabetes cases diagnosed in overweight people are a direct result of obesity
• Congestive heart failure - obesity increases the risk of congestive heart failure, a potentially fatal condition in which the heart muscle weakens, progressively losing the ability to pump blood.
• Stroke !
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Storage in mammals
The excess protein from your diet can be deaminated and the carbohydrate part converted to glycogen and stored. What is deamination?Where does it occur?Go to the next slide and try the “Fill-in-the blanks” exercise on Deamination.
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Read each statement and then write down words that will correctly complete each statement. Point and click on the statement to get feedback.
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1. Deamination is the process by which ______ ____ are broken down when too much ______ has been taken in.
3. Ammonia is toxic to the human system, and _________convert it to ______or _________.
2. It Involves the removal of an amino group from the amino acid and it is then converted to ___________.
4. Deamination takes place primarily in the ____ and also in the __________.
1. Deamination is the process by which amino acids are broken down when too much protein has been taken in.
3. Ammonia is toxic to the human system, and enzymes convert it to urea or uric acid.
2. It Involves the removal of an amino group from the amino acid and it is then converted to ammonia.
4. Deamination takes place primarily in the liver and also in the kidneys.
FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Storage of other materials
• Vitamins such as A, D, K , E and C, nicotinic acid and folic acid
• Minerals e.g. iron and potassium.• The liver may also serve as
temporary storage area for various toxins which might be either ingested or produced in the body from physiological activities.
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FOOD STORAGE IN LIVING THINGS
Humans
X
INTRODUCTION
FOOD STORAGE EXPLAINED
FOOD STORAGE AREAS
STORAGE OF OTHER
MATERIALS
SUMMARY
Summary
• Plants make and store food for their own use. Animals, such as humans who cannot make their own food, must rely on plants - either directly or indirectly – for their stored food to meet the animal’s metabolic requirements.
• When animals store excess food from their diet, it is usually problematic and harmful to their health and general well-being.
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