B1

Question 1

What does your Circulatory System do?

Answer 1

your circulatory system carries oxygen and glucose in your blood to all of your body’s cell.

Question 2

How is energy released, in terms of the circulatory system?

Answer 2

aerobic Respiration

Question 3

What does your heart do?

Answer 3

It pumps blood around your body.

Question 4

Why does your heart relax?

Answer 4

Your heart contracts to fill with blood.

Question 5

Why does you heart contract?

Answer 5

Your heart contracts to squeeze the blood out into the arteries.

Question 6

When the heart contracts, what happens to the blood?

Answer 6

the blood is put under pressure and sent into the arteries.

Question 7

What does this ensure?

Answer 7

This insures that the blood reaches all parts of the body supplying cells with glucose and oxygen for respiration.

Question 8

What is the heart beat or pulse?

Answer 8

the heart beat or pulse is a surge of blood.

Question 9

Is blood in the arteries under pressure?

Answer 9

Yes. Always

Question 10

What is the definition of blood pressure?

Answer 10

Blood Pressure - a measure of the force of blood per unit area as it flows through the arteries.

Question 11

What is blood pressure measured in?

Answer 11

mm Hg ( Millimetres of mercury)

Question 12

how many measurements is Blood pressure measured in? And give an example

Answer 12

2. 120/80

Question 13

What is the first number called and what does it represent?

Answer 13

Systolic - The pressure in the arteries when your heart contracts i.e when the blood pressure is at its highest.

Question 14

what is the second number called and what does it represent?

Answer 14

Diastolic - The pressure in the arteries when your heart relaxes.

Question 15

What is normal blood pressure, and how can it be affected?

Answer 15

120/80 mm Hg. Can be varied by age and lifestyle.

Question 16

How can you reduce high blood pressure?

Answer 16

By doing regular aerobic exercise to strengthen the heart

Question 17

Give 3 factors that can lead to high blood pressure?

Answer 17

Excess weight
High stress levels 
Excess alcohol
A diet which is high in sat fat/sugar/salt
smoking

Question 18

Explain one of the factors that can lead to high blood pressure

Answer 18

Smoking - the carbon monoxide takes the place of oxygen in the haemoglobin so the oxygen-carrying capacity of the blood is reduced
A diet with is high in sat fat - sat fat can lead to a build up of cholesterol in the arteries forming plaques. This plaques bulges into the lumen, restricting/blocking blood flow through the arteries, increasing the risk of a heart attack.

Question 19

Why is high blood pressure dangerous in the long term?

Answer 19

the blood vessels can weaken and eventually burst.

Question 20

Why is low blood pressure bad for you?

Answer 20

this means that the blood isn’t circulating efficiently, so some parts of the body are deprived of glucose and oxygen. this can lead to dizziness, fainting, cold hands and feet.

Question 21

Name 3 causes of heart disease

Answer 21

High blood pressure
smoking
too much salt
high-fat diets.

Question 22

What does being Healthy mean?

Answer 22

To be free from infection

Question 23

What does being Fit mean?

Answer 23

relates to how much physical activity you are capable of doing and how quickly your body recovers afterwards.

Question 24

There are different types of exercises that develop different type of fitness, These are all measurable. Give 5 of these aspects?

Answer 24

Strength
stamina
flexibility
agility
speed

Question 25

what is Cardiovascular efficiency?

Answer 25

How well your heart copes with aerobic exercise and how quickly it recovers afterwards - is often used as a measure of general fitness.

Question 26

what is the best way to measure fitness?

Answer 26

with multiple tests testing each aspect of fitness.

Question 27

What does food supply living organisms with?

Answer 27

energy and nutrients

Question 28

What must a balanced diet contain?

Answer 28

Carbohydrates and fats | protein

Question 29

what are carbohydrates made up of?

Answer 29

simple sugars like glucose.

Question 30

What are Fats made up of?

Answer 30

fatty acids | glycerol

Question 31

What are proteins mad up of?

Answer 31

Amino acids.

Question 32

Where are carbohydrates stored? and what as?

Answer 32

in the liver as glycogen or can be converted to fats.

Question 33

Where are Fats Stored? and what as?

Answer 33

stored under the skin and around organs as adipose tissue.

Question 34

Where are proteins stored?

Answer 34

proteins are not stored.

Question 35

To keep your body healthy you need other substances in your body. Name all 4 of these substances?

Answer 35

minerals - iron to make haemoglobin in red blood cells Vitamins - vitamin C to prevent scurvy fibre - prevent constipation and to maintain healthy bowls Water - prevent dehydration, and to help remove waste.

Question 36

Why might you alter your diet?

Answer 36

``` belief religious belief medical issues age sex - gender activity ```

Question 37

what does the amount of energy you need to depend on?

Answer 37

age, sex and activity levels

Question 38

What does BMI stand for?

Answer 38

Body Mass Index

Question 39

How can you calculate BMI?

Answer 39

BMI = Mass(KG) -------------- height (m)2

Question 40

What is the ideal weight group?

Answer 40

18.5-24.9