The human circulatory system

Biology

The human heart and double 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 waste product is produced by cells that is transported by the blood to the lungs for excretion?

Which components make up the circulatory system?

What is the function of the circulatory system?

the fluid that cells and nutrients and waste products are dissolved in

Match the component of blood to its function.

Where in the body are waste products transported for removal?

What is blood transported around the body in?

Which two gases are exchanged in the lungs?

water + oxygen → carbon dioxide + glucose

oxygen + glucose → carbon dioxide + water

carbon dioxide + glucose → oxygen + water

water + carbon dioxide → glucose + oxygen

Starter Quiz

Which best describes living organisms?