The system which transports nutrients and waste around the body.

An organ which pumps blood around the body.

Specialised tissue found in the heart which rhythmically contracts and relaxes together.

A section of the heart, known as an atrium or ventricle.

Flaps in the heart which prevent backflow of blood.

The human heart and double circulatory system

Biology

The human circulatory system

Human blood cells and blood vessels

Microscopy of human blood cells and blood vessels

Moving into and out of the blood: diffusion, osmosis and active transport

Diffusion and surface area to volume ratio

The importance of exchange surfaces and transport systems in humans

Pupils will learn how the components of the human nervous system enable us to respond to changes outside and inside our bodies.

Pupils learned about biological molecules that are essential to life, including sugars and other carbohydrates, proteins and lipids, and the role of enzymes in catalysing the chemical reactions in which these substances are used and made.

This unit covers the human circulatory system, its link to the gas exchange system, and the adaptations of the heart, blood vessels, and blood components. It explains transport mechanisms like diffusion, osmosis, and active transport, and the need for exchange surfaces in multicellular organisms.

Transport and exchange surfaces in humans

What type of muscle is the heart made of?

Which chambers of the heart contain oxygenated blood?

What separates the left and right side of the heart?

heart_2

How many times does blood pass through the heart for each time it circulates around the body?

Put the path of blood in the right order starting with the right atrium.

stop oxygenated and deoxgenated blood mixing

What is the name of the arteries that supply the heart itself with blood?

Which organ system does the heart belong to?

Starter Quiz

What main tissue is the heart made of?