GCSE PE 1.2.2 A healthy, active lifestyle and your cardiovascular system.

GCSE PE

1.2.2A healthy, active lifestyle and your

cardiovascular system.

TRUE OR FALSE• The heart is made of 6 chambers.

• Only the veins carry blood.

• The heart has 2 separate sides, one ‘deals’ with oxygenated and the other deoxygenated blood

• The aorta is the largest artery in the body, which carries oxygenated blood out of the heart.

• Only De-oxygenated blood passes through the heart.

• The heart is a muscle

• The blood passes through the heart twice before being sent around the body, full of 02.

• The heart pumps blood around the body which only has one function .

• There are 4 chambers in the heart

TRUE OR FALSE• The heart is made of 6 chambers. FALSE

• Only the veins carry blood. FALSE

• The heart has 2 separate sides, one ‘deals’ with oxygenated and the other deoxygenated blood. TRUE

• The aorta is the largest artery in the body, which carries oxygenated blood out of the heart. TRUE

• ONLY De-oxygenated blood pass through the heart. FALSE

• The heart is a muscle TRUE

• The blood passes through the heart twice before being sent around the body, full of 02. TRUE

• The heart pumps blood around the body which only has one function. FALSE

• There are 4 chambers of the heart. TRUE

What does the Cardiovascular system do?

What makes up the cardiovascular system?

This should be a recap from last lesson!

The Cardiovascular system during exercise

Structure of the heartCan you label this diagram?

Structure of the heartCan you label this diagram?

You should know this from last lessons learning.

Vena cava

Right Atrium

Left ventricleRight ventricle

aorta

Left atrium

Pulmonary artery

Pulmonary vein

Pathway of blood through the heart

http://www.youtube.com/watch?v=SvAVu-7E2gA

Exam Questions on the cardiovascular system.

Copy and answer the following questions.

1. The cardiovascular system is made up of the …………………., ………………………. And …………………………..

2. The heart is a ………………….. that pushes blood through blood vessels.

3. Blood being pushed around the body has 2 main functions:

1. …………………………………………………………….2. ……………………………………………………………

4. The heart has ………………. Chambers. They are called ………………………. And …………………………………..

5. The deoxygenated blood enters the heart via the ………………., is sent to the lungs through the ……………………………………………. And finally leaves the heart, once oxygenated through the biggest artery in the body, the …………………………………

The Cardiovascular system during exerciseA strong cardiovascular system often means good CV fitness.

Can you remember and write down the definition of cardiovascular fitness?

Cardiovascular fitness is important for everyone, not just sports people!

http://www.youtube.com/watch?v=O8ttt3M8qZM

The Cardiovascular system during exerciseWhat happens to the cardiovascular system during

exercise

So what would happen to your heart rate if you did the following?........

http://www.youtube.com/watch?v=POdzasJklxw

Why would your heart rate increase if you took part in some of the extreme sports shown?

Would it be a different reason to the first video?

http://www.youtube.com/watch?v=yRX1jFEQApw

What happens to the cardiovascular system during exercise

Heart rate increases Definition - The number of times the heart beats per minute.

Heart rate increases during exercise. A ‘normal’ Resting Heart Rate is between 60-80bpm.

http://www.youtube.com/watch?v=BhGwb5hxbX4 (sound effects of a resting HR Vs HR during exercise)

When exercising, muscles need more oxygen (O2).

This need means the heart needs to pump more oxygenated blood, more quickly to the working muscles (because they need the O2).

Adrenalin is a hormone that causes an increase in heart rate and blood pressure.We need to know what this is!

What happens to the cardiovascular system during exercise

Blood Pressure

Definition = the force exerted by blood on the walls of blood vessels

The heart makes 2 beating sounds, called systolic and diastolic.

Systolic = made when the ventricles (lower chambers of the heart) force blood out of the heart at high pressure). Sound is caused by heart valves opening / closing.

Diastolic = made by the upper chambers (atriums) contracting pushing the blood down into the ventricles.

http://www.youtube.com/watch?v=7eFn8Cgcx8g

What happens to the cardiovascular system during exercise

Blood Pressure

A blood pressure meter is used To measure systolic and diastolic Blood pressure.

Systolic pressure – is the maximum pressure in the arteries when the heart contracts and pushes blood through the aorta into the body.

Will your systolic blood pressure change during the day? If so why? What about at night?

What happens to the cardiovascular system during exercise

Diastolic Blood Pressure

Is the pressure of the blood during the relaxation phase (between heart beats).

This pressure depends on the elasticity of blood vessels.

Blood pressure and heart rate will rise during exercise or excitement

Lets measure someone's blood pressure!

Preventing high blood pressure

If the pressure exerted by blood gets to high, damage will occur to blood vessels.

So what can someone do to reduce the risk of high blood pressure?

Preventing high blood pressure

Here are some clues

Preventing high blood pressure

• Check weight

• Limit alcohol consumption

• Don’t smoke – it damages blood vessels and raises BP.

• Don’t eat to much salty food – affects BP

• Avoid stress

• Take regular exercise – helps keep BP normal as helps control stress

Plenary / summaryAnswer the following questions. Make sure you check how much each question is worth.

1. The heart is responsible for pumping blood to working muscles. Define what is meant by the term Heart Rate, stating the functions of the blood. (3)

2. Blood pressure is affected by exercise. Explain the different types of blood pressure, explaining what effect high blood pressure can cause on blood vessels. (3)

3. what is included in the cardiovascular system. Give a definition of cardiovascular fitness and a sport that requires a good level of it. (5)