Year 11 GCSE PE THE CARDIOVASCULAR SYSTEM. OBJECTIVES TO KNOW THE JOURNEY OF BLOOD THROUGH THE CARDIOVASCULAR SYSTEM TO UNDERSTAND HOW THE HEART WORKS.

Year 11 GCSE PETHE CARDIOVASCULAR SYSTEM

OBJECTIVES

• TO KNOW THE JOURNEY OF BLOOD THROUGH THE CARDIOVASCULAR SYSTEM

• TO UNDERSTAND HOW THE HEART WORKS• TO BE ABLE TO LABEL A DIAGRAM OF THE

HEART

QUICK QUIZ

1. NAME THE AGONIST AT THE ELBOW WHEN THROWING A JAVELIN

2. WHAT IS A SYNERGIST?3. WHAT TYPE OF MUSCLE ACTION IS THE

DOWN PHASE OF A PRESS UP?4. NAME THE AGONIST AT THE SHOULDER FOR

THIS MOVEMENT

ANSWERS

1. TRICEPS2. A MUSCLE THAT ASSISTS THE AGONIST BY

SUPPORTING THE BODY OR JOINT DURING MOVEMENT

3. ISOTONIC ECCENTRIC4. PECTORALS

What is made up of the Cardiovascular

system

What is the CARDIOVASCULAR system?

The HEART, LUNGS , BLOOD and BLOOD VESSELS

+ +

BLOOD is pumped around the body by the HEART through the BLOOD VESSELS

BLOOD performs two main functions as it travels around the body:– 1. supply the body with oxygen and nutrients– 2. to remove waste products such as carbon dioxide

Why is the CV system important

Why is the CV system important?

The HEART is the most important muscle in the body

A strong CV system often means that you have good cardiovascular fitness

This means that you have the ability to exercise the whole body for long periods of time

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

Sport and the CV system

• IN SPORT, THE CV SYSTEM DELIVERS OXYGEN TO OUR WORKING MUSCLES and organs

Blood vessels that run throughout the body allow the blood to travel everywhere

Let’s look closer at the path ofthe blood...

The circulatory system

body’scells

lungsDeoxygenated blood is pumped from the heart to the lungs through the pulmonary artery.

Oxygenated blood returns to the heart through the pulmonary vein.

Oxygenated blood is pumped at high pressure from the heart to the body through the aorta.

Deoxygenated blood returns to the heart through the vena cava.

The double circulatory system

oxygenated blood to the rest of the body through the arteries

deoxygenated blood back to the heart through the veins.

The pulmonary circulation carries:

deoxygenated blood from the heart to the lungs

oxygenated blood back from the lungs to the heart, ready to be pumped out to the body.

The systemic circulation carries:

lungs

body’scells

THE HEART

TASK 1

• YOU HAVE 5 MINUTES TO LABEL YOUR HEART DIAGRAM

BILLY THE BLOOD CELL

• BILLY HAS NO OXYGEN TO GIVE• HE IS IN THE VENA CAVA• HE NEEDS TO COLLECT OXYGEN TO GIVE IT AWAY TO

MARTY THE MUSCLE, SO HE MAKES HIS WAY INTO THE RIGHT ATRIUM

• HE THEN PASSES DOWN INTO THE RIGHT VENTRICLE• HE NOW GETS PUMPED THROUGH THE PULMONARY

ARTERY TO THE LUNGS TO PICK UP OXYGEN• NOW HE HAS OXYGEN HE GOES BACK TO THE HEART

VIA THE PULMONARY VEIN

• BILLY NOW RETURNS TO THE HEART INTO THE LEFT ATRIUM

• HE PASSES DOWN INTO THE BIGGEST CHAMBER, THE LEFT VENTRICLE

• FROM HERE BILLY CAN NOW BE SENT ON HIS WAY TO MARTY

• HE IS PUMPED THROUGH THE AORTA TO THE WORKING MUSCLES

TASK 2• COPY THE SIMPLIFIED DIAGRAM

DEFINITIONS• HEART RATE (HR): THE NUMBER OF TIMES THE

HEART CONTRACTS IN 1 MINUTE• STROKE VOLUME (SV): THE AMOUNT OF

BLOOD EJECTED FROM THE HEART IN ONE BEAT• CARDIAC OUTPUT (Q): THE AMOUNT OF

BLOOD EJECTED FROM THE HEART IN 1 MINUTE

• Q = HR X SV• EG. HR = 72BPM, SV = 70ML• Q = 72 X 70 = 5040ML• = 5 LITRES

TASK 3

• WORK THROUGH THE FOLLOWING EXAMPLES:

• HR = 110, SV = 80ML, WHAT IS Q?• HR = 85, Q = 5250ML, WHAT IS SV?• SV = 75, Q = 6000ML, WHAT IS HR?

ANSWERS

• 110 X 80 = 8800ML = 8.8L

• 5250 / 85 = 62ML

• 6000 / 75 = 80BPM

HOMEWORK

On wikispaces please complete by next

Monday without fail

Diagram: HANDOUT Colour in and label the diagram of the cardiovascular system

Label the following; The heart The lungs The body

Colour the corrects sides;De-oxygenated blood = blueOxygenated blood = Red

Correct order...

The blood passes into the left atrium The blood re-enters the heart via the pulmonary vein The blood passes through the bicuspid valve and into the left ventricle The blood is pumped through the semi-lunar valve The blood leaves the heart via the aorta The blood travels to the lungs where it fills with oxygen and loses its

carbon dioxide The blood passes out of the heart via the pulmonary artery The blood is pumped through the semi-lunar valve The blood passes through the tricuspid valve and into the right ventricle The blood passes into the right atrium The blood enters the heart from the body via the vena cava The blood travels around the body, depositing oxygen and collecting

carbon dioxide

Stand up behind your desk

Complete the following workout; March on the spot for 30 secs Jump up and down 10 times Jog on the spot for 30 seconds Crouch down and stand up 5 times Run on the spot for 30 seconds

What happens to your body?

Immediate effects of exercise on the body