The Circulatory System

The Circulatory System

The Circulatory system

• Your ______, blood vessels and ______form the parts of the circulatory system, each with their own specific functions.

• The circulatory system circulates blood from your heart to all parts of your body and back again.

What are the parts that make up our circulatory system?

1 . The Heart• Your heart pumps blood all the time to all parts of

your body.

• Your heart is made of heart muscle.

• The heart muscle contracts and relaxes continuously.

• You cannot control your heart muscle.

What are the parts that make up our circulatory system?

2. Blood Vessels• Blood vessels are tubes which carry blood to

different parts of your body.

• There are 3 types of blood vessels:______________capillary

Blood vessels

Artery

Vein

Capillaries

Veins carry bloodrich in __________back to the heart

Arteries carry bloodrich in __________from your heart to

all parts of your body

Blood vessels Capillaries

have very thin walls

allow oxygen, digested food, water, carbon dioxide and waste materials to pass through their walls

Artery

Vein

Capillaries

What are the parts that make up our circulatory system?

3. Blood• Transports oxygen, digested food and water

to the various parts of the body.• Transports carbon dioxide from various parts

of the body to the _______ to be removed.• Transports other waste products to the

respective organs, for e.g. kidneys, to be removed.

Blood Circulation

How do parts of the circulatory system work together?

1. Your heart pumps blood rich in oxygen, digested food and water to all parts of your body, through the _______________.

2. Your body cells use the oxygen, digested food and water from the blood to produce energy.

3. The digested food, oxygen and water then pass through the walls of the fine ____________ into the cells of the body.

How do parts of the circulatory system work together?

4. As blood goes around your body, it picks up ______________ and waste materials.

5. On its way back to your heart, blood passes the waste materials to the excretory organs like your ________, ________ and ________.

6. When blood reaches your heart again, it is sent to the lungs where carbon dioxide is removed.

The rate of your heartbeat changes with the type of activity you are doing

• When you exercise, your heart rate increases.• This is because the active body parts need a lot of

energy. The rate of respiration __________ to provide this energy.

• This requires more food and oxygen and results in more carbon dioxide being produced.

• Our heart pumps __________ so that the blood can supply the required food and oxygen to the active body parts.

• This also removes the carbon dioxide produced, more rapidly.

The Circulatory System of Plants The Circulatory System of Plants

Tubes for transportingTubes for transportingXylem tubes carry water and mineral saltsfrom the roots to the leaves.

Phloem tubes carry food from the leavesto other parts of the plant.

Working together

• The phloem and xylem tubes work together to transport1. __________2. __________3. mineral saltsto different parts of the plant.

• These tubes help plants to grow healthily.