Your body has ________ different systems!
called circulatory system made up of
heart,blood,and blood vessels
cardivoascular systems are made up of
heart ,blood ,and blood vessels
the cardiovascular system performs 3 main functions
1.blood circulates through blood vessels.
2.delivers oxygen and nutrients to the body cells.
3.wastes are carried away from the cells.
the heart has 4 chambers
a flap of tissue that prevents the back flow of blood
picks up waste products from the cells
blood is composed of four different parts:
2.red blood cells
3.white blood cells
shaped like disks to flow easily
carries oxegen to other types of cells
red blood cells
defends body against diseases
white blood cells
1. sticky to help them stick to wound
2. release a special protein that weaves a net to help stop bleeding and trap red blood cells creating a clot
3. The scab you see is a dried blood clot.
when the left ventricicle contracts,it pumps oxygnated blood into your
oxygenated blood leaves the heart through a large artery called the.
carry the oxygenated blood to your cells[blood then is deoxygenated blood must go back to your heart and lungs to get more oxygen
the blood goes into larger blood vessel they have valves to prevent backflow of blood
connects arteries to veins
smallest blood vessels
helps the blood defend against diseases
three principles that govern the functin of the human body
a it is designed with many systems.
b all systems work together to keep the body alive.
c.it is important to take care of your body so that it functions well.
allows good things from the food we eat to get into our blood stream.
brings in oxygen so the blood cells can carry to the other
takes harmful and unnecessary substances from our blood and removes them from our bodies
the process of breaking nutrients into smaller molecules
a protein made by the body cells that help speed up chemical reactions such as digestion
digests carbohydrates into sugars
the process of taking in food
a muscular tube between the mouth and the stomach
the process of moving nutrients from the intestine into the blood
the process of removing wastes from the body
Chapter 13 Body Systems I