The Circulatory System

The Circulatory System

Blood Vessels

Ø     Veins transport

blood from the organs to the heart.

Ø                 Arteries transport

Ø     blood from the heart to the organs.

Ø      Capillaries connect arteries and veins

The Heart

ü      It’s a hollow organ made of muscle.

ü      The upper part is called artrium.

ü      The lower part is called ventricle.

ü      The ventricle and the artrium is connected by a valve.

Blood

                  Plasma is dissolved with water and residues

§      There are 3 types of blood cells:

·      Red blood cells:

transport oxygen and carbon dioxide.

·      White blood  cells: defend us from infections.

·      Platalets:

block our wonds so we don’t lose lot of blood.

The Function of blood

o     Transport oxygen and carbon dioxide.

o     Defend our body from infections.

 By:Ena  Sofia Càceres Hernàndez