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Home Economics: 01.9 - Water > Necessary Information > Flashcards

Flashcards in Necessary Information Deck (11)
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1

Water is the main component of what parts of the body?
(4)

The cell liquid
Blood
Lymph
Digestive juices

2

What is the elemental composition of water ?

Hydrogen and Oxygen in the ratio 2:1 (H2O)

3

What are the properties of water?
(9)

Colourless
Odourless
Tasteless
Boils at 100 degrees Celsius
Freezes at 0 degrees Celsius
Neutral pH7
Excellent solvent
Can be solid, liquid or gas
Absorbs and retains heat

4

What are the functions of water?

Quenches thirst
Removes waste products
Makes up 92% of blood plasma
Provides the minerals calcium and fluoride
Regulates body temperature at 37 degrees Celsius
Involved in the hydrolysis of nutrients during digestion
Prevents constipation

5

How does water prevent constipation?

It makes stools soft and easy to pass

6

How does water remove waste from the body?

Waste is removed through the kidneys as urine

7

Water makes up 92% of blood plasma, what function does this carry out?

It transports nutrients, oxygen, carbon dioxide, hormones and enzymes around the body

8

What minerals does water provide?

Calcium and fluoride

9

List four sources of water

Tap or bottles water
Beverages such as milk, tea, coffee and juices
Fruit and vegetables
Soups

10

What is the recommended daily allowance of water?

Two to three litres of water or eight glasses a day

11

Under what circumstances should you increase your intake of water
(4)

Intense physical activity
Lactation
Diarrhoea
Illness e.g. fever