The Heart and problems - The Nottingham Emmanuel School PDF

THE HEART

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[PDF] THE HEART

larger blood volume in exercising conditions) ▫ Note: Coronary arteries (from the first branching of aorta) supply oxygenated blood to the cardiac muscle

[PDF] BODY FLUIDS AND CIRCULATION - NCERT

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The Heart and problems - The Nottingham Emmanuel School

Biology: The Heart Key word Definition Artery Blood vessel that carries blood away from the heart They have a thick elastic wall to maintain pressure Vein

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PDF document for free

The Heart and problems - The Nottingham Emmanuel School

32039_7Biology_The_Heart_and_problems_Sum_1.pdf

Biology: The Heart

KeywordDefinition

ArteryBloodvessel that carries blood away from the heart. They have a thick elastic wall to maintain pressure. VeinBloodvessel that carries blood back to the heart. They have a thin wall and contain valves. CapillarySmallblood vessels (one cell thick) which connect arteries and veins. Substances are exchanged here.

ValvesPrevents blood from flowing the wrong way.

Oxygenated

blood Bloodwith a large percentage of oxygen and low in carbon dioxide.

Deoxygenated

blood Bloodwith a large percentage ofcarbon dioxideand low in oxygen

Coronaryblood

vessel Bloodvessels which supply the heart muscle with blood

Pulmonary

blood vessel

Bloodvessels which connect the lungs

Non- communicable disease Disease which is not caused by apathogen and cannot be caught e.g. Coronary heart disease Risk factorCharacteristicor activity which increases the likelihood of developing a disease

Double circulatory system

The heart is part of a double circulatory system. This means the blood travels through the heart twice on its journey around the body. The right ventricle pumps blood to the lungs to become oxygenated. The left ventricle pumps blood around the body where it becomes deoxygenated.

The Heart

The heart is made from

muscle tissue.

Heart rate is controlled by

a group of cells in the right atrium that act as a pacemaker by setting off impulses which make the heart muscles contract.

Coronary Heart Disease

Fatty materials can build up in

coronaryarteries. This reduces blood flow to the heart muscle and a lack of oxygen to the cells can lead to a heart attack.

The Heart and problems - The Nottingham Emmanuel School

Biology: The Heart

KeywordDefinition

ValvesPrevents blood from flowing the wrong way.

Oxygenated

Deoxygenated

Coronaryblood

Pulmonary

Bloodvessels which connect the lungs

Double circulatory system

The Heart

The heart is made from

Heart rate is controlled by

Coronary Heart Disease

Fatty materials can build up in

The risk of developing coronary

Smoking

High blood pressure

High levels of saturated fat

Obesity

Stress

Genetics

Risk factorsTreatments

Stents-Tubes

Statins-Drug which

Faulty heart valvescan be

Other diseases & treatments

Patient's can also

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