Presentation on theme: "YOUR CIRCULATORY SYSTEM How does it work? Why does a doctor check your pulse and blood pressure? What is your blood type and why is it important?"— Presentation transcript:
YOUR CIRCULATORY SYSTEM How does it work? Why does a doctor check your pulse and blood pressure? What is your blood type and why is it important?
The Transport System CIRCULATORY SYSTEM –Your body’s transport system. –Keeps the body working well. By delivering essential materials to body cells and removing waste materials from the cells. »THIS BODY SYSTEM IS ALSO KNOWN AS THE CARDIOVASCULAR SYSTEM.
How the Circulatory System works Blood carries substances through Circulatory System Organs serve as transfer stations –Blood picks up nutrients and delivers them to cells Wastes and removes them from body
Parts of the Circulatory System Heart Blood Vessels Blood
HEART Is a pump, that moves blood in 2 major pathways 1.Pulmonary Circulation 2.Systematic Circulation
HEART The heart is divided into 4 chambers –Each upper chamber is called ATRIUM –Each lower chamber is called VENTRICLE * VALVES open and close to control the flow of blood
Pulmonary Arteries Carry blood containing carbon dioxide from your heart to your lungs.
Pulmonary Veins Carry blood containing oxygen from your lungs to your heart.
Blood A mixture of solids in a large amount of liquid called plasma PLASMA –Is about 92% water –The solids are Red blood cells White blood cells Platelets
Parts of Blood Red blood cells – carry oxygen to the cells and carbon dioxide away from the cells. White blood cells – help fight disease and infection by attacking germs that enter the body Platelets – help blood clot, which seals cuts and prevents excess blood loss from a wound
More about Blood Blood is essential to life Your blood is not the same as everyone else’s Blood transfusions –Blood must match –Mixing blood could have serious side effects High fevers, difficulty breathing, and even death
Blood Types AB ABO
Positive or Negative Blood Rh + –Blood does contain Rh factor Rh – –Blood does not contain Rh factor
Blood Banks People of age can donate blood Only people in good health can donate A new needle is used every time blood is drawn All donated blood is tested for disease
Blood Vessels Over 80,000 miles of blood vessels move your blood throughout your body Three types of blood vessels 1. Arteries 2. Veins 3. Capillaries
Arteries Carry blood away from the heart
Veins Blood vessels that carry blood from the body back to the heart
Capillaries Tiny tubes that carry blood from the arteries to the body’s cells and from cells to the veins
Blood Pressure As blood moves through your body, it exerts pressure against the walls of blood vessels Sphygmomanometer – instrument that measures blood pressure