Heart structure

• All will know the names and the parts of the heart

• Most will be able to describe how blood circulates in the body

• Some will be able to explain the benefits of our circulatory system

Which organs are involved in this system?

The body has its own transport systemthat carries substances around the body.

The body’s transport system is called the circulatory system.

heart

blood vessels

blood

Heart structure

• Watch video –

• What is the heart made of?

• Where is the heart found?

• what is the function of the heart?

Heart structure

• Label the diagram of the heart

Heart structure

• Describe the pathway of blood as it flows around the body. Include the names of important blood vessels and organs. Start at the pulmonary vein.

• Which substances pass into and out of the blood at each organ?

Blood is pumped around the body by the heart.

It takes about 30s for blood to go once around the body.

Starting with the left side of the heart, what route does the blood follow to complete one circuit of the body?

body’scells

body’scells

body’scells

body’scells

lungslungs

body’scells

body’scells

body’scells

body’scells

lungslungs

Circulatory questions

1. What are the three elements of the circulatory system?

2. Humans have a double circulatory system. What does this mean? (draw fig 1 p.238)