1. Function The circulatory system takes___________and ____________ to all the tissues of the body.

It also picks up____________products like____________.

Then it takes them to_________that eliminate them.

2. Parts of the circulatory system

The heart is a hollow, muscular organ, about the size of your fist. The function of the heart is simple. It keeps blood circulating throughout the

100,000 Km long system through which blood is distributed to the

Fluid that delivers oxygen, hormones, and nutrients to the cells and carries away the wastes that the cells

2.1 The Heart1.What is the role of the circulatory system in the nutrition process?

2.Write information schematically about the heart:

LOCATION FUNCTION THE TWO HALVES

THE CAVITIES

3.Answer these questions about the video in page 2 from the power point presentation:

- Where is the heart?

- Where is the carbon dioxide cleaned and we get the oxygen?

- How many beats can our heart do in a minute while relaxed? And if we are running?

- Why is this system called the circulatory system?

- What do arteries do? And veins?

- What is the size of the heart? And the weight?

- How many litres of blood do we have in our body?

2.1.2 PARTS OF THE HEART: The heart contains four open spaces called________. The two upper chambers are the ______ _________and the______ _________. The two lower chambers are the ________ _________ and the________ _____________.

2.1.3 HOW DOES THE HEART WORK?1. Order these sentences according to the process

that the heart does for working:atrium or in the left atrium. Then it goes to the of the heart.When the ventricles contract, they push the blood out When blood goes into the heart, it enters in the right ventricles.

Now copy the sentences from exercise 4 in order:_______________________________________________________________________________________________________________________________________________________________________________________________________________________

2. Draw the main arteries of the human body and name them on the picture.

3. Explain what are:- ARTERIES:___________________________________

_____________________________________- VEINS:_______________________________________

____________________________________- CAPILLARIES:_________________________________

____________________________________

4. Draw the different types of blood cells, write their names and their functions:

3. HOW DOES BLOOD CIRCULATE?

1.Watch this video and do the exercises:

http://www.cengage.com/biology/discipline_content/animations/blood_circulation.html

2.Complete the sentences with these words. Then answer the questions.

inferiorleft atriumcarbon dioxidesuperior

heartlungs oxygen right atrium aorta

What kind of circulation does the text describe? Pulmonary/General.

Deoxygenated blood enters the ________and passes

into the right ventricle. The right ventricle pumps the blood out of

the heart through the pulmonary arteries to the _____________.

The blood picks up __________ and releases _______________.

The oxygenated blood returns to the _________through the pulmonary veins.

The blood goes into the ______________ and then into the left

ventricle. The left ventricle pumps the blood through the _________

to the rest of the organs in the body.

In the organs, the blood picks up __________________and

releases ________________.

The _______________vena cava and the ____________vena cava carry deoxygenated blood to the heart.

What kind of circulation does the picture describe? Pulmonary/General.

3.Watch the video from this link and afterwards write three questions for your partners to answer:

https://www.youtube.com/watch?v=-s5iCoCaofc