The circulatory system carries nutrients and oxygen to all parts of the body and collects waste materials. It is composed of the heart and blood vessels. The heart is an organ made of muscle located in the chest that pumps blood through the arteries, veins, and capillaries, which circulate blood throughout the body and back to the heart.

1. Name: ____________________________________________
Read the text and do the activities:
What are the two functions of the circulatory system?
- ____________________________________________
- ____________________________________________
THE CIRCULATORY SYSTEM
The function of the circulatory system is to carry nutrients
and oxygen to all parts of the body and to collect the waste
materials.
The organs that form the circulatory system are the heart
and the blood vessels.
 The heart is an organ made of muscle. It is the size of
an apple and it is located between the two lungs. It
pushes the blood through the body.
 The blood vessels are: arteries, veins and capillaries.
Blood circulates through them.
- The blood in the arteries flows from the heart to all of
the organs in the body.

2. HEART
ORGANS IN
THE BODY
Which are the organs that form the circulatory system?
_________________________________________________
_________________________________________________
Complete the sentences:
- The heart is an organ made of ___________.
- There are three types of blood vessels: _________,
________ and _____________.
Complete the diagram with two types of blood vessels.