How does the heart pump blood around the body?

The Circulatory System

OB14, OB15Understand the structure and function of the heart, identify the four chambers of the heart, and explain the difference between the left and right ventriclesDescribe the passage of blood through the heart and lungs via arteries and veins, identify the pulmonary artery and vein, aorta and vena cava, and distinguish between arteries, veins and capillariesThere are THREE types of blood vesselsARTERIES

Carry blood away from the heartThick, muscular, stretchy wallNarrow central tube

VEINSCarry blood towards the heartThin walls with little muscleWide central tubeHave valves stop the blood flowing backwards

HEARTLUNGSVEIN carrying deoxygenated blood back to heartARTERY carrying oxygenated blood to legCirculatory systemArtery redVein - blueCAPILLARIEScarry blood between arteries and veinswall only one cell thickvery narrow central tube

All Blood VesselsArteryThick WallsBlood from heartVeinsThin wallsBlood to heartContain valvesCapillariesVery thin walls and tubeCarry oxygen and food to cellsThick muscular wallsDivided into 4 chambersRight side pumps blood to lungsLeft side pumps oxygenated blood from the lungs to ALL parts of body

The Heart

The heart is divided into FOUR chambersRight VentricleRight AtriumLeft AtriumLeft VentricleThe heart has four major blood vesselsVENA CAVAPULMONARYVEINAORTAPULMONARYArteryVENA CAVAFrom bodyTo bodyFrom lungsTo lungs

The pulse can be felt at:Where can we find a pulse?A healthy heart at rest will beat 70 times every minute..\..\..\blood around body\Blood around body.exeHeart

Inside every cell oxygen is added to glucose in RESPIRATION to produceENERGY WATER + CARBON DIOXIDE +Draw a flow chart Show the route of a red blood cellStarting at lungs and moving via heart to armLeaving the arm and returning back to the lungsLabelled oxygenated blood cells (red), deoxygenated blood cells (blue), the heart, lungs, arteries and veins

The BloodThe blood has three main purposesTransport stuff around the body (Food, Oxygen, Carbon Dioxide and Urea)Defence (White Blood Cells)Clotting (Platelets)Parts of the Blood

Plasma This is the name for the liquid that all the cells float in. Mostly water with Glucose, Protein and Urea dissolved in it.

Parts of the Blood

Red Blood Cells Carry the oxygen around the body. The oxygen combines with HAEMOGLOBIN to turn the blood red. When there is no oxygen in the Haemoglobin it turns purple.

Parts of the Blood

White Blood Cells Eat the bacteria that invade the body. Forming the main part of the IMMUNE SYSTEM.Some can also produce anti-bodies.

Parts of the Blood

Platelets Allow the blood to clot by all rushing to the injury.

All Blood VesselsArteryThick WallsBlood from heartVeinsThin wallsBlood to heartContain valvesCapillariesVery thin walls and tubeCarry oxygen and food to cells

Left side muscle is thicker as it has to pump the blood to all parts of the body.The right side just takes it to the lungsBlood SummaryTypeFunctionAppearancePlasmaCarries glucose, protein and waste.Clear LiquidRed Blood CellCarry Oxygen to cells in HaemoglobinRed or blueWhite Blood CellPrevent Disease and attack invadersMany different cellsPlateletsClot the bloodFragments of cellsThe blood mobileNominated for 6 Oscars by ..H/WP541,2,3,6,7