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Biology B1 > B1.1 Fitness and Health > Flashcards

B1.1 Fitness and Health Flashcards

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1
Q

What is physical fitness?

A

Ability to do physical activity

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2
Q

What is good health?

A

Being free from disease

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3
Q

What is a disease?

A

Condition caused by any part of the body not functioning properly

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4
Q

Name a few of the main causes of early death in the UK

A

Eating too much salt
High blood pressure
Eating too much saturated fat
Smoking

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5
Q

Each time the heart beats, what does it do?

A

The muscles contract

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6
Q

What happens when the heart beats and the muscles contract?

A

Pushes blood out of the arteries at the correct pressure

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7
Q

What is the normal blood pressure level?

A

120/80 mmHg

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8
Q

What is systolic pressure?

A

The pressure in arteries when heart contracts (120mmHg)

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9
Q

What is diastolic pressure?

A

The pressure in arteries when heart rekaxes (80mmHg)

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10
Q

How can blood pressure increase?

A 
Stress
Smoke
Eat too much salt
Eat a lot of satuarted fat
Drink too much alcohol
Overweight
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11
Q

At what level is high blood pressure?

A

140/90mmHg

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12
Q

What can happen if you have high bp?

A

Have a heart attack
Have a stroke
Suffer from kidney damage

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13
Q

How does smoking increase bp?

A

Tobcaco smoke contains carbon monoxide and nicotine(increases heart rate)

Carbon monoxides combines with haemoglobin in red blood cells and prevents them from carrying as much oxygen

Therefore, heart beats faster to compensate-> strains heart

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14
Q

How does saturated fat increase bp?

A

Liver makes cholesterol from saturated fat

Cholestreol is carried in the blood- deposited in artery wall

Deposits narrow the artieries and restrict blood flow. The blood pressure increases- force blood through the narrow gap

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15
Q

What is thrombosis?

A

Cholesterol deposits may lead to a blood clot, known as THROMBOSIS

thrombosis-> artery supplying the heart muscles causes a heart attack (brain-> stroke)

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16
Q

Low blood pressure?

A 
Can be harmful
Can lead to:
- dizziness
- fainting
- poor circulation and organ failure

Biology B1 (16 decks)

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