The Heart

Lloyd Dean

NVQ Level 3 Personal Training

Aims of LessonBy the end of the lesson you should be able

to:

Describe the structure of the Heart

Explain the flow of blood through the Heart

Label the heart

The Heart Structure

• Size and Location

• 3 Layers of Heart Wall

Pericardium (Outer Layer) Reduce friction & maintain heart shape

Myocardium (Middle Layer) Largest layer and used in electrical impulse of heart

beat

Endocardium (Inner Layer)Prevent friction between flowing blood and heart muscle

The Heart Structure

“Cardium” – Heart

“Peri” – On, around

“Myo” – Muscle

“Endo” – Within, Inward

Heart Chambers

RIGHT ATRIUM LEFT

ATRIUM

RIGHT VENTRICL

E

LEFT VENTRICL

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MUSCLE

Septum – Divides the two sides of the heart preventing oxygenated blood mixing with deoxygenated blood.

Pulmonary Vein – Transports oxygenated blood to the heart.Aorta – Transports oxygenated blood away from the heart to the body.Vena Cava – Transports deoxygenated blood from the body back to the heart.Pulmonary Artery – Transports deoxygenated blood to the lungs.

AORTAPULMONARY VEIN

PULMONARY ARTERY

VENA CAVA

SEPTUM

Valves in The Heart• 4 Valves in the heart

• Bicuspid Valve - Found between the left ventricle and the left atrium and prevents backflow of blood from the left ventricle to the left atrium. Also known as Mitrial valve.

• Tricuspid Valve - Found between the right ventricle and the right atrium and prevents backflow of blood from the right ventricle to the right atrium

• Aortic Valve - Found in the aorta. They prevent backflow of blood into the left ventricle.

• Pulmonary Valve – Found in the pulmonary artery and prevents backflow of blood into the right ventricle.

• How do the valves make sure that blood does not flow backwards?

Chordae Tendinae

The Valves Working

The Heart

Blood Flow Through Heart

Circulation of Blood

Video….ensure “developer” is enabled at the top of the powerpoint via powerpoint options.

The Heart Structure and Function• How does the heart receive energy?

• With the person sat next to you describe and draw how blood flows through the heart

• The heart beats between 80,000 to 100,000 times and pumps approximately 23,000 litres of blood a day

• That means it will have beat 2-3 billion times and pumped 50-65 million gallons of blood over a 70-90 year lifespan

• Remember to look after it!

Aims of Lesson You should know be able to:

Describe the structure of the Heart

Explain the flow of blood through the Heart

Label the heart

Test Time!

Click here to start

Can You Label The Heart?

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Click on the

Left Atrium

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Click on the

Left Ventricle

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Click on the

Tricuspid Valve

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Click on the Aortic and

Pulmonary Valves

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Click on the

Right Atrium

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Right Ventricle

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PulmonaryVeins

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Click on the

Pulmonary Artery

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Click on the Aorta

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Click on the

Vena Cava

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