The circulatory system transports the nutrients we can eat and the oxygen we breathe throuhout the body.
1.Heart: The heart is an organ that acts like a pump.It is divided into 4 chambers:
-Atrium higher
-Atrium lower
-Ventricle higher
-Ventricle lower
Blood: The blood contains liquid plasma and three types of cells.
-Red blood cells: absorb and transport the oxygen.
-White blood cells: fight germs and infections.
-Platelets: help to stop bleeding. They stick together and form a scab.
Circulation
Check this jamboard about the circulation.