Double circulatory system and structure of the heart | Physical education

Starter quiz

Which of the following does the word cardiac relate to?

lungs

heart ✓

blood

blood vessels
What is the substance carried to our working muscles within the blood that provides energy for exercise?

nitrogen

carbon dioxide

oxygen ✓

haemoglobin
______ are a type of blood vessel that carries blood away from the heart at high pressure.

'arteries' ✓
When you start exercising, your heart rate ...

'increases' ✓
The wall that divides the left and right sides of the heart is called the ...

'septum' ✓
Match the following body system with its main function.

musculoskeletal

⇔

allows movement when muscles contract to leverage bones ✓

circulatory

⇔

pumps blood to deliver oxygen/nutrients and remove waste products ✓

respiratory

⇔

enables gaseous exchange to get oxygen into the body ✓

cardio-respiratory

⇔

the heart, blood vessels and lungs that deliver oxygen to muscles ✓

digestive

⇔

converts food we eat into nutrients we can use for energy, growth etc. ✓

nervous

⇔

sends messages between the brain and different body parts ✓

Exit quiz

The systemic circuit supplies oxygen to which two of the following areas?

working muscles ✓

brain ✓

lungs
The ______ circuit transports blood to the lungs to collect oxygen and takes it back to the heart.

'pulmonary' ✓
Which of the following refers to the two chambers at the top of the heart?

bicuspid

tricuspid

ventricles

atria ✓
Name the chamber identified in red in the image below.

left atrium ✓

left ventricle

right atrium

right ventricle
Match the following components of the circulatory system.

pulmonary artery

⇔

carries blood from the heart to the lungs ✓

bicuspid valve

⇔

situated between the left atrium and the left ventricle ✓

left ventricle

⇔

the biggest chamber of the heart before blood is pumped to the body ✓

aorta

⇔

the biggest artery in the body carrying blood into systemic circuit ✓

vena cava

⇔

the main vein carrying deoxygenated blood into the right atrium ✓

semilunar valve

⇔

prevent backflow into heart after being pumped out of ventricles ✓
Valves can be found in the heart and in veins to help prevent ______ of blood.

'backflow' ✓

Worksheet

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Lesson Details

Key learning points

Deoxygenated blood travels from the body into the heart's right side then through the pulmonary artery to the lungs.
The pulmonary vein carries oxygenated blood from the lungs to the left side of the heart then out the aorta to the body.
Valves in the heart prevent the backflow of blood.
The heart is a double circulatory pump. The pulmonary circuit carries blood to the lungs then back to the heart.
The systemic circuit carries oxygenated blood out of the heart to the body tissues and returns with deoxygenated blood.

Common misconception

Which side of the heart is the left when you look at the body and which side is oxygenated versus deoxygenated.

The left side of the heart is nearest your left armpit and carries oxygenated blood, the right side of the heart has deoxygenated blood (remember: LORD - left, oxygenated and right, deogygenated).

Keywords

Atria - the upper chambers of the heart. The right atrium receives deoxygenated blood and the left receives oxygenated blood
Ventricles - the lower chambers of the heart that receive blood from the atria before pumping it out to the body/lungs
Valves - structural feature that prevents backflow of blood
Pulmonary circulation - carries deoxygenated blood from the right side of the heart to the lung then back to the left side of the heart
Systemic circulation - carries oxygenated blood from the left side of the heart to the rest of the body. After delivering oxygen and nutrients to the body, the blood returns to the right side of the heart deoxygenated