1. 1. Blood and Blood VesselsBy: MellisaSean HewDanielRachel Soh
2. 2. Chocolate can actually help the circulatorysystem. According to the Northwest HealthSciences University, chocolate contains cocoawhich has antioxidants that help protect thecardiovascular system. The antioxidants helplower blood pressure and help reduce deathsrelated to cardiovascular disease. A 4-5 gramserving per day is enough to gain the benefitsfrom the antioxidants found in cocoa.
3. 3. The main blood vessels areArteries, Veins and Capillaries
4. 4. Arteries~ Carries blood AWAY form the heart Two main arteries are pulmonaryarteries and systemic arteries
5. 5. Pulmonary arteriescarry blood from Arteries~the heart to thelungs where theblood picks upoxygen. Systemic arteriesdeliver blood tothe rest of thebody. Aorta is the mainsystemic arteryand the largestartery of thebody. It supplyblood to the head
6. 6. Veins~ Carries blood TO the heart Four main veins are pulmonary, systemic,superficial, and deep veins.
7. 7. Pulmonary veinstransportsoxygenated bloodfrom the lungs tothe heart.Veins~ Systemic veinsreturndeoxygenated bloodfrom the rest ofthe body to theheart. Superficial veins arelocated close to thesurface of the skinand are not locatednear acorrespondingartery Deep veins are
8. 8. Capillaries~ Important exchanges of thecirculatory system occurs here The capillaries are a single cell indiameter to aid fast and easydiffusion of gases, sugars and othernutrients to surrounding tissues.
9. 9. Blood is about twice as thick as water, thanks to all the cells and other bits that float in it.
10. 10. Function of Blood Carries oxygen to cells Carries waste products like lactic acidaway from cells White Blood Cells fight againstdiseases in the body
11. 11. Function of Blood Maintaining a good circulation, the bloodflow keeps the body temperature at around37oC. Blood transport nutrients from thedigestive system to the cells in our body Substances like platelets and fibrin in theblood help to clot wounds
12. 12. Red Blood Cells~ They transport oxygen from the lungsto all of the living tissues of the bodyand carry away carbon dioxide. Hemoglobin is the gas that transportproteins and make up 95% of eachred cell
13. 13. They seek out,identify, and bind White Blood Cells~to alien proteinon bacteria, viruses, and fungi sothat they can beremoved They also have thefunction of gettingrid of dead ordying blood cellsas well as foreignmatter such asdust
14. 14. Platelets~ Platelets work with blood clottingchemicals at the site of wounds Platelets also fight diseases byreleasing proteins and kill invadingbacterias
15. 15. Plasma~ As the heart pumps blood to cellsthroughout the body, plasma bringsnourishment to them and removes thewaste products of metabolism Metabolism=The chemical and physicalprocesses continuously going on in thecells of living organisms. These are theprocesses by which energy and matterare made available for use by the cellsof an organism. Heat is a byproduct ofmetabolism.