martes, 11 de octubre de 2011

The Circulatory System

1.           Why is blood important? What happens to oxygenated blood after it leaves the lungs?
The blood carries the oxygen to all parts of our body.
The heart pumps the oxygenated blood to every part of the body.
2.         Why does blood move around the body? What are the two routes of blood circulation?
Because every cell in the body receives oxygen and nutrients from blood.
The two routes of blood circulation are: pulmonary circulation and Coronary circulation.


3.         What are the components of blood? What do platelets do?
The mains components are plasma, red blood cells, white blood cells and platelets.
Blood platelets are very small cells which make blood coagulate when it is not in closed blood vessels.
The heart

4.         Why is the heart important? What parts are inside the heart? Do you remember the names of the most important artery and vein?
The heart is important because it pumps blood. There are two atrium and two ventricles. The aorta and vena cava.
5.         What is the heart?
The heart is a hollow muscular organ. It pumps blood around the body through arteries, veins and capillaries.
6.         What are the names of the hollow spaces inside the heart?
The hollow space inside the heart is divided into two atriums. They received blood from veins.
7.         How does blood circulate inside the heart?
Blood goes from the heart to the lungs, from the lungs goes back to the heart and then it goes to the body.

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